1 /****************************************************************************
2 * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
3 ****************************************************************************
4 * rrd__graph.c produce graphs from data in rrdfiles
5 ****************************************************************************/
15 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
28 #include "rrd_graph.h"
30 /* some constant definitions */
34 #ifndef RRD_DEFAULT_FONT
35 /* there is special code later to pick Cour.ttf when running on windows */
36 #define RRD_DEFAULT_FONT "DejaVuSansMono-Roman.ttf"
39 text_prop_t text_prop[] = {
40 {8.0, RRD_DEFAULT_FONT}
42 {9.0, RRD_DEFAULT_FONT}
44 {7.0, RRD_DEFAULT_FONT}
46 {8.0, RRD_DEFAULT_FONT}
48 {8.0, RRD_DEFAULT_FONT} /* legend */
52 {0, 0, TMT_SECOND, 30, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
54 {2, 0, TMT_MINUTE, 1, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
56 {5, 0, TMT_MINUTE, 2, TMT_MINUTE, 10, TMT_MINUTE, 10, 0, "%H:%M"}
58 {10, 0, TMT_MINUTE, 5, TMT_MINUTE, 20, TMT_MINUTE, 20, 0, "%H:%M"}
60 {30, 0, TMT_MINUTE, 10, TMT_HOUR, 1, TMT_HOUR, 1, 0, "%H:%M"}
62 {60, 0, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 2, 0, "%H:%M"}
64 {60, 24 * 3600, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 4, 0, "%a %H:%M"}
66 {180, 0, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 6, 0, "%H:%M"}
68 {180, 24 * 3600, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 12, 0, "%a %H:%M"}
70 /*{300, 0, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly */
71 {600, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%a"}
73 {1200, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%d"}
75 {1800, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a %d"}
77 {2400, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a"}
79 {3600, 0, TMT_DAY, 1, TMT_WEEK, 1, TMT_WEEK, 1, 7 * 24 * 3600, "Week %V"}
81 {3 * 3600, 0, TMT_WEEK, 1, TMT_MONTH, 1, TMT_WEEK, 2, 7 * 24 * 3600,
84 {6 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 1, TMT_MONTH, 1, 30 * 24 * 3600,
87 {48 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 3, TMT_MONTH, 3, 30 * 24 * 3600,
90 {315360, 0, TMT_MONTH, 3, TMT_YEAR, 1, TMT_YEAR, 1, 365 * 24 * 3600, "%Y"}
92 {10 * 24 * 3600, 0, TMT_YEAR, 1, TMT_YEAR, 1, TMT_YEAR, 1,
93 365 * 24 * 3600, "%y"}
95 {-1, 0, TMT_MONTH, 0, TMT_MONTH, 0, TMT_MONTH, 0, 0, ""}
98 /* sensible y label intervals ...*/
122 {20.0, {1, 5, 10, 20}
128 {100.0, {1, 2, 5, 10}
131 {200.0, {1, 5, 10, 20}
134 {500.0, {1, 2, 4, 10}
142 gfx_color_t graph_col[] = /* default colors */
143 { 0xFFFFFFFF, /* canvas */
144 0xF0F0F0FF, /* background */
145 0xD0D0D0FF, /* shade A */
146 0xA0A0A0FF, /* shade B */
147 0x90909080, /* grid */
148 0xE0505080, /* major grid */
149 0x000000FF, /* font */
150 0x802020FF, /* arrow */
151 0x202020FF, /* axis */
152 0x000000FF /* frame */
159 # define DPRINT(x) (void)(printf x, printf("\n"))
165 /* initialize with xtr(im,0); */
173 pixie = (double) im->xsize / (double) (im->end - im->start);
176 return (int) ((double) im->xorigin + pixie * (mytime - im->start));
179 /* translate data values into y coordinates */
188 if (!im->logarithmic)
189 pixie = (double) im->ysize / (im->maxval - im->minval);
192 (double) im->ysize / (log10(im->maxval) - log10(im->minval));
194 } else if (!im->logarithmic) {
195 yval = im->yorigin - pixie * (value - im->minval);
197 if (value < im->minval) {
200 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
203 /* make sure we don't return anything too unreasonable. GD lib can
204 get terribly slow when drawing lines outside its scope. This is
205 especially problematic in connection with the rigid option */
207 /* keep yval as-is */
208 } else if (yval > im->yorigin) {
209 yval = im->yorigin + 0.00001;
210 } else if (yval < im->yorigin - im->ysize) {
211 yval = im->yorigin - im->ysize - 0.00001;
218 /* conversion function for symbolic entry names */
221 #define conv_if(VV,VVV) \
222 if (strcmp(#VV, string) == 0) return VVV ;
228 conv_if(PRINT, GF_PRINT)
229 conv_if(GPRINT, GF_GPRINT)
230 conv_if(COMMENT, GF_COMMENT)
231 conv_if(HRULE, GF_HRULE)
232 conv_if(VRULE, GF_VRULE)
233 conv_if(LINE, GF_LINE)
234 conv_if(AREA, GF_AREA)
235 conv_if(STACK, GF_STACK)
236 conv_if(TICK, GF_TICK)
238 conv_if(CDEF, GF_CDEF)
239 conv_if(VDEF, GF_VDEF)
241 conv_if(PART, GF_PART)
243 conv_if(XPORT, GF_XPORT)
244 conv_if(SHIFT, GF_SHIFT)
249 enum gfx_if_en if_conv(
261 enum tmt_en tmt_conv(
265 conv_if(SECOND, TMT_SECOND)
266 conv_if(MINUTE, TMT_MINUTE)
267 conv_if(HOUR, TMT_HOUR)
268 conv_if(DAY, TMT_DAY)
269 conv_if(WEEK, TMT_WEEK)
270 conv_if(MONTH, TMT_MONTH)
271 conv_if(YEAR, TMT_YEAR)
275 enum grc_en grc_conv(
279 conv_if(BACK, GRC_BACK)
280 conv_if(CANVAS, GRC_CANVAS)
281 conv_if(SHADEA, GRC_SHADEA)
282 conv_if(SHADEB, GRC_SHADEB)
283 conv_if(GRID, GRC_GRID)
284 conv_if(MGRID, GRC_MGRID)
285 conv_if(FONT, GRC_FONT)
286 conv_if(ARROW, GRC_ARROW)
287 conv_if(AXIS, GRC_AXIS)
288 conv_if(FRAME, GRC_FRAME)
293 enum text_prop_en text_prop_conv(
297 conv_if(DEFAULT, TEXT_PROP_DEFAULT)
298 conv_if(TITLE, TEXT_PROP_TITLE)
299 conv_if(AXIS, TEXT_PROP_AXIS)
300 conv_if(UNIT, TEXT_PROP_UNIT)
301 conv_if(LEGEND, TEXT_PROP_LEGEND)
315 for (i = 0; i < (unsigned) im->gdes_c; i++) {
316 if (im->gdes[i].data_first) {
317 /* careful here, because a single pointer can occur several times */
318 free(im->gdes[i].data);
319 if (im->gdes[i].ds_namv) {
320 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
321 free(im->gdes[i].ds_namv[ii]);
322 free(im->gdes[i].ds_namv);
325 free(im->gdes[i].p_data);
326 free(im->gdes[i].rpnp);
329 gfx_destroy(im->canvas);
333 /* find SI magnitude symbol for the given number*/
335 image_desc_t *im, /* image description */
341 char *symbol[] = { "a", /* 10e-18 Atto */
342 "f", /* 10e-15 Femto */
343 "p", /* 10e-12 Pico */
344 "n", /* 10e-9 Nano */
345 "u", /* 10e-6 Micro */
346 "m", /* 10e-3 Milli */
351 "T", /* 10e12 Tera */
352 "P", /* 10e15 Peta */
359 if (*value == 0.0 || isnan(*value)) {
363 sindex = floor(log(fabs(*value)) / log((double) im->base));
364 *magfact = pow((double) im->base, (double) sindex);
365 (*value) /= (*magfact);
367 if (sindex <= symbcenter && sindex >= -symbcenter) {
368 (*symb_ptr) = symbol[sindex + symbcenter];
375 static char si_symbol[] = {
376 'a', /* 10e-18 Atto */
377 'f', /* 10e-15 Femto */
378 'p', /* 10e-12 Pico */
379 'n', /* 10e-9 Nano */
380 'u', /* 10e-6 Micro */
381 'm', /* 10e-3 Milli */
386 'T', /* 10e12 Tera */
387 'P', /* 10e15 Peta */
390 static const int si_symbcenter = 6;
392 /* find SI magnitude symbol for the numbers on the y-axis*/
394 image_desc_t *im /* image description */
398 double digits, viewdigits = 0;
401 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
402 log((double) im->base));
404 if (im->unitsexponent != 9999) {
405 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
406 viewdigits = floor(im->unitsexponent / 3);
411 im->magfact = pow((double) im->base, digits);
414 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
417 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
419 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
420 ((viewdigits + si_symbcenter) >= 0))
421 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
426 /* move min and max values around to become sensible */
431 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
432 600.0, 500.0, 400.0, 300.0, 250.0,
433 200.0, 125.0, 100.0, 90.0, 80.0,
434 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
435 25.0, 20.0, 10.0, 9.0, 8.0,
436 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
437 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
438 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
441 double scaled_min, scaled_max;
448 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
449 im->minval, im->maxval, im->magfact);
452 if (isnan(im->ygridstep)) {
453 if (im->extra_flags & ALTAUTOSCALE) {
454 /* measure the amplitude of the function. Make sure that
455 graph boundaries are slightly higher then max/min vals
456 so we can see amplitude on the graph */
459 delt = im->maxval - im->minval;
461 fact = 2.0 * pow(10.0,
463 (max(fabs(im->minval), fabs(im->maxval)) /
466 adj = (fact - delt) * 0.55;
469 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
470 im->minval, im->maxval, delt, fact, adj);
475 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
476 /* measure the amplitude of the function. Make sure that
477 graph boundaries are slightly lower than min vals
478 so we can see amplitude on the graph */
479 adj = (im->maxval - im->minval) * 0.1;
481 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
482 /* measure the amplitude of the function. Make sure that
483 graph boundaries are slightly higher than max vals
484 so we can see amplitude on the graph */
485 adj = (im->maxval - im->minval) * 0.1;
488 scaled_min = im->minval / im->magfact;
489 scaled_max = im->maxval / im->magfact;
491 for (i = 1; sensiblevalues[i] > 0; i++) {
492 if (sensiblevalues[i - 1] >= scaled_min &&
493 sensiblevalues[i] <= scaled_min)
494 im->minval = sensiblevalues[i] * (im->magfact);
496 if (-sensiblevalues[i - 1] <= scaled_min &&
497 -sensiblevalues[i] >= scaled_min)
498 im->minval = -sensiblevalues[i - 1] * (im->magfact);
500 if (sensiblevalues[i - 1] >= scaled_max &&
501 sensiblevalues[i] <= scaled_max)
502 im->maxval = sensiblevalues[i - 1] * (im->magfact);
504 if (-sensiblevalues[i - 1] <= scaled_max &&
505 -sensiblevalues[i] >= scaled_max)
506 im->maxval = -sensiblevalues[i] * (im->magfact);
510 /* adjust min and max to the grid definition if there is one */
511 im->minval = (double) im->ylabfact * im->ygridstep *
512 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
513 im->maxval = (double) im->ylabfact * im->ygridstep *
514 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
518 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
519 im->minval, im->maxval, im->magfact);
526 if (isnan(im->minval) || isnan(im->maxval))
529 if (im->logarithmic) {
530 double ya, yb, ypix, ypixfrac;
531 double log10_range = log10(im->maxval) - log10(im->minval);
533 ya = pow((double) 10, floor(log10(im->minval)));
534 while (ya < im->minval)
537 return; /* don't have y=10^x gridline */
539 if (yb <= im->maxval) {
540 /* we have at least 2 y=10^x gridlines.
541 Make sure distance between them in pixels
542 are an integer by expanding im->maxval */
543 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
544 double factor = y_pixel_delta / floor(y_pixel_delta);
545 double new_log10_range = factor * log10_range;
546 double new_ymax_log10 = log10(im->minval) + new_log10_range;
548 im->maxval = pow(10, new_ymax_log10);
549 ytr(im, DNAN); /* reset precalc */
550 log10_range = log10(im->maxval) - log10(im->minval);
552 /* make sure first y=10^x gridline is located on
553 integer pixel position by moving scale slightly
554 downwards (sub-pixel movement) */
555 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
556 ypixfrac = ypix - floor(ypix);
557 if (ypixfrac > 0 && ypixfrac < 1) {
558 double yfrac = ypixfrac / im->ysize;
560 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
561 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
562 ytr(im, DNAN); /* reset precalc */
565 /* Make sure we have an integer pixel distance between
566 each minor gridline */
567 double ypos1 = ytr(im, im->minval);
568 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
569 double y_pixel_delta = ypos1 - ypos2;
570 double factor = y_pixel_delta / floor(y_pixel_delta);
571 double new_range = factor * (im->maxval - im->minval);
572 double gridstep = im->ygrid_scale.gridstep;
573 double minor_y, minor_y_px, minor_y_px_frac;
575 if (im->maxval > 0.0)
576 im->maxval = im->minval + new_range;
578 im->minval = im->maxval - new_range;
579 ytr(im, DNAN); /* reset precalc */
580 /* make sure first minor gridline is on integer pixel y coord */
581 minor_y = gridstep * floor(im->minval / gridstep);
582 while (minor_y < im->minval)
584 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
585 minor_y_px_frac = minor_y_px - floor(minor_y_px);
586 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
587 double yfrac = minor_y_px_frac / im->ysize;
588 double range = im->maxval - im->minval;
590 im->minval = im->minval - yfrac * range;
591 im->maxval = im->maxval - yfrac * range;
592 ytr(im, DNAN); /* reset precalc */
594 calc_horizontal_grid(im); /* recalc with changed im->maxval */
598 /* reduce data reimplementation by Alex */
601 enum cf_en cf, /* which consolidation function ? */
602 unsigned long cur_step, /* step the data currently is in */
603 time_t *start, /* start, end and step as requested ... */
604 time_t *end, /* ... by the application will be ... */
605 unsigned long *step, /* ... adjusted to represent reality */
606 unsigned long *ds_cnt, /* number of data sources in file */
608 { /* two dimensional array containing the data */
609 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
610 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
612 rrd_value_t *srcptr, *dstptr;
614 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
617 row_cnt = ((*end) - (*start)) / cur_step;
623 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
624 row_cnt, reduce_factor, *start, *end, cur_step);
625 for (col = 0; col < row_cnt; col++) {
626 printf("time %10lu: ", *start + (col + 1) * cur_step);
627 for (i = 0; i < *ds_cnt; i++)
628 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
633 /* We have to combine [reduce_factor] rows of the source
634 ** into one row for the destination. Doing this we also
635 ** need to take care to combine the correct rows. First
636 ** alter the start and end time so that they are multiples
637 ** of the new step time. We cannot reduce the amount of
638 ** time so we have to move the end towards the future and
639 ** the start towards the past.
641 end_offset = (*end) % (*step);
642 start_offset = (*start) % (*step);
644 /* If there is a start offset (which cannot be more than
645 ** one destination row), skip the appropriate number of
646 ** source rows and one destination row. The appropriate
647 ** number is what we do know (start_offset/cur_step) of
648 ** the new interval (*step/cur_step aka reduce_factor).
651 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
652 printf("row_cnt before: %lu\n", row_cnt);
655 (*start) = (*start) - start_offset;
656 skiprows = reduce_factor - start_offset / cur_step;
657 srcptr += skiprows * *ds_cnt;
658 for (col = 0; col < (*ds_cnt); col++)
663 printf("row_cnt between: %lu\n", row_cnt);
666 /* At the end we have some rows that are not going to be
667 ** used, the amount is end_offset/cur_step
670 (*end) = (*end) - end_offset + (*step);
671 skiprows = end_offset / cur_step;
675 printf("row_cnt after: %lu\n", row_cnt);
678 /* Sanity check: row_cnt should be multiple of reduce_factor */
679 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
681 if (row_cnt % reduce_factor) {
682 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
683 row_cnt, reduce_factor);
684 printf("BUG in reduce_data()\n");
688 /* Now combine reduce_factor intervals at a time
689 ** into one interval for the destination.
692 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
693 for (col = 0; col < (*ds_cnt); col++) {
694 rrd_value_t newval = DNAN;
695 unsigned long validval = 0;
697 for (i = 0; i < reduce_factor; i++) {
698 if (isnan(srcptr[i * (*ds_cnt) + col])) {
703 newval = srcptr[i * (*ds_cnt) + col];
711 newval += srcptr[i * (*ds_cnt) + col];
714 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
717 /* an interval contains a failure if any subintervals contained a failure */
719 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
722 newval = srcptr[i * (*ds_cnt) + col];
747 srcptr += (*ds_cnt) * reduce_factor;
748 row_cnt -= reduce_factor;
750 /* If we had to alter the endtime, we didn't have enough
751 ** source rows to fill the last row. Fill it with NaN.
754 for (col = 0; col < (*ds_cnt); col++)
757 row_cnt = ((*end) - (*start)) / *step;
759 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
760 row_cnt, *start, *end, *step);
761 for (col = 0; col < row_cnt; col++) {
762 printf("time %10lu: ", *start + (col + 1) * (*step));
763 for (i = 0; i < *ds_cnt; i++)
764 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
771 /* get the data required for the graphs from the
780 /* pull the data from the rrd files ... */
781 for (i = 0; i < (int) im->gdes_c; i++) {
782 /* only GF_DEF elements fetch data */
783 if (im->gdes[i].gf != GF_DEF)
787 /* do we have it already ? */
788 for (ii = 0; ii < i; ii++) {
789 if (im->gdes[ii].gf != GF_DEF)
791 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
792 && (im->gdes[i].cf == im->gdes[ii].cf)
793 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
794 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
795 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
796 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
797 /* OK, the data is already there.
798 ** Just copy the header portion
800 im->gdes[i].start = im->gdes[ii].start;
801 im->gdes[i].end = im->gdes[ii].end;
802 im->gdes[i].step = im->gdes[ii].step;
803 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
804 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
805 im->gdes[i].data = im->gdes[ii].data;
806 im->gdes[i].data_first = 0;
813 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
815 if ((rrd_fetch_fn(im->gdes[i].rrd,
821 &im->gdes[i].ds_namv,
822 &im->gdes[i].data)) == -1) {
825 im->gdes[i].data_first = 1;
827 if (ft_step < im->gdes[i].step) {
828 reduce_data(im->gdes[i].cf_reduce,
833 &im->gdes[i].ds_cnt, &im->gdes[i].data);
835 im->gdes[i].step = ft_step;
839 /* lets see if the required data source is really there */
840 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
841 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
845 if (im->gdes[i].ds == -1) {
846 rrd_set_error("No DS called '%s' in '%s'",
847 im->gdes[i].ds_nam, im->gdes[i].rrd);
855 /* evaluate the expressions in the CDEF functions */
857 /*************************************************************
859 *************************************************************/
861 long find_var_wrapper(
865 return find_var((image_desc_t *) arg1, key);
868 /* find gdes containing var*/
875 for (ii = 0; ii < im->gdes_c - 1; ii++) {
876 if ((im->gdes[ii].gf == GF_DEF
877 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
878 && (strcmp(im->gdes[ii].vname, key) == 0)) {
885 /* find the largest common denominator for all the numbers
886 in the 0 terminated num array */
893 for (i = 0; num[i + 1] != 0; i++) {
895 rest = num[i] % num[i + 1];
901 /* return i==0?num[i]:num[i-1]; */
905 /* run the rpn calculator on all the VDEF and CDEF arguments */
912 long *steparray, rpi;
917 rpnstack_init(&rpnstack);
919 for (gdi = 0; gdi < im->gdes_c; gdi++) {
920 /* Look for GF_VDEF and GF_CDEF in the same loop,
921 * so CDEFs can use VDEFs and vice versa
923 switch (im->gdes[gdi].gf) {
927 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
929 /* remove current shift */
930 vdp->start -= vdp->shift;
931 vdp->end -= vdp->shift;
934 if (im->gdes[gdi].shidx >= 0)
935 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
938 vdp->shift = im->gdes[gdi].shval;
940 /* normalize shift to multiple of consolidated step */
941 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
944 vdp->start += vdp->shift;
945 vdp->end += vdp->shift;
949 /* A VDEF has no DS. This also signals other parts
950 * of rrdtool that this is a VDEF value, not a CDEF.
952 im->gdes[gdi].ds_cnt = 0;
953 if (vdef_calc(im, gdi)) {
954 rrd_set_error("Error processing VDEF '%s'",
955 im->gdes[gdi].vname);
956 rpnstack_free(&rpnstack);
961 im->gdes[gdi].ds_cnt = 1;
962 im->gdes[gdi].ds = 0;
963 im->gdes[gdi].data_first = 1;
964 im->gdes[gdi].start = 0;
965 im->gdes[gdi].end = 0;
970 /* Find the variables in the expression.
971 * - VDEF variables are substituted by their values
972 * and the opcode is changed into OP_NUMBER.
973 * - CDEF variables are analized for their step size,
974 * the lowest common denominator of all the step
975 * sizes of the data sources involved is calculated
976 * and the resulting number is the step size for the
977 * resulting data source.
979 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
980 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
981 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
982 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
984 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
987 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
988 im->gdes[gdi].vname, im->gdes[ptr].vname);
989 printf("DEBUG: value from vdef is %f\n",
990 im->gdes[ptr].vf.val);
992 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
993 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
994 } else { /* normal variables and PREF(variables) */
996 /* add one entry to the array that keeps track of the step sizes of the
997 * data sources going into the CDEF. */
999 rrd_realloc(steparray,
1001 1) * sizeof(*steparray))) == NULL) {
1002 rrd_set_error("realloc steparray");
1003 rpnstack_free(&rpnstack);
1007 steparray[stepcnt - 1] = im->gdes[ptr].step;
1009 /* adjust start and end of cdef (gdi) so
1010 * that it runs from the latest start point
1011 * to the earliest endpoint of any of the
1012 * rras involved (ptr)
1015 if (im->gdes[gdi].start < im->gdes[ptr].start)
1016 im->gdes[gdi].start = im->gdes[ptr].start;
1018 if (im->gdes[gdi].end == 0 ||
1019 im->gdes[gdi].end > im->gdes[ptr].end)
1020 im->gdes[gdi].end = im->gdes[ptr].end;
1022 /* store pointer to the first element of
1023 * the rra providing data for variable,
1024 * further save step size and data source
1027 im->gdes[gdi].rpnp[rpi].data =
1028 im->gdes[ptr].data + im->gdes[ptr].ds;
1029 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1030 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1032 /* backoff the *.data ptr; this is done so
1033 * rpncalc() function doesn't have to treat
1034 * the first case differently
1036 } /* if ds_cnt != 0 */
1037 } /* if OP_VARIABLE */
1038 } /* loop through all rpi */
1040 /* move the data pointers to the correct period */
1041 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1042 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1043 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1044 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1046 im->gdes[gdi].start - im->gdes[ptr].start;
1049 im->gdes[gdi].rpnp[rpi].data +=
1050 (diff / im->gdes[ptr].step) *
1051 im->gdes[ptr].ds_cnt;
1055 if (steparray == NULL) {
1056 rrd_set_error("rpn expressions without DEF"
1057 " or CDEF variables are not supported");
1058 rpnstack_free(&rpnstack);
1061 steparray[stepcnt] = 0;
1062 /* Now find the resulting step. All steps in all
1063 * used RRAs have to be visited
1065 im->gdes[gdi].step = lcd(steparray);
1067 if ((im->gdes[gdi].data = malloc(((im->gdes[gdi].end -
1068 im->gdes[gdi].start)
1069 / im->gdes[gdi].step)
1070 * sizeof(double))) == NULL) {
1071 rrd_set_error("malloc im->gdes[gdi].data");
1072 rpnstack_free(&rpnstack);
1076 /* Step through the new cdef results array and
1077 * calculate the values
1079 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1080 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1081 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1083 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1084 * in this case we are advancing by timesteps;
1085 * we use the fact that time_t is a synonym for long
1087 if (rpn_calc(rpnp, &rpnstack, (long) now,
1088 im->gdes[gdi].data, ++dataidx) == -1) {
1089 /* rpn_calc sets the error string */
1090 rpnstack_free(&rpnstack);
1093 } /* enumerate over time steps within a CDEF */
1098 } /* enumerate over CDEFs */
1099 rpnstack_free(&rpnstack);
1103 /* massage data so, that we get one value for each x coordinate in the graph */
1108 double pixstep = (double) (im->end - im->start)
1109 / (double) im->xsize; /* how much time
1110 passes in one pixel */
1112 double minval = DNAN, maxval = DNAN;
1114 unsigned long gr_time;
1116 /* memory for the processed data */
1117 for (i = 0; i < im->gdes_c; i++) {
1118 if ((im->gdes[i].gf == GF_LINE) ||
1119 (im->gdes[i].gf == GF_AREA) || (im->gdes[i].gf == GF_TICK)) {
1120 if ((im->gdes[i].p_data = malloc((im->xsize + 1)
1121 * sizeof(rrd_value_t))) == NULL) {
1122 rrd_set_error("malloc data_proc");
1128 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1131 gr_time = im->start + pixstep * i; /* time of the current step */
1134 for (ii = 0; ii < im->gdes_c; ii++) {
1137 switch (im->gdes[ii].gf) {
1141 if (!im->gdes[ii].stack)
1143 value = im->gdes[ii].yrule;
1144 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1145 /* The time of the data doesn't necessarily match
1146 ** the time of the graph. Beware.
1148 vidx = im->gdes[ii].vidx;
1149 if (im->gdes[vidx].gf == GF_VDEF) {
1150 value = im->gdes[vidx].vf.val;
1152 if (((long int) gr_time >=
1153 (long int) im->gdes[vidx].start)
1154 && ((long int) gr_time <=
1155 (long int) im->gdes[vidx].end)) {
1156 value = im->gdes[vidx].data[(unsigned long)
1162 im->gdes[vidx].step)
1163 * im->gdes[vidx].ds_cnt +
1170 if (!isnan(value)) {
1172 im->gdes[ii].p_data[i] = paintval;
1173 /* GF_TICK: the data values are not
1174 ** relevant for min and max
1176 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1177 if ((isnan(minval) || paintval < minval) &&
1178 !(im->logarithmic && paintval <= 0.0))
1180 if (isnan(maxval) || paintval > maxval)
1184 im->gdes[ii].p_data[i] = DNAN;
1189 ("STACK should already be turned into LINE or AREA here");
1198 /* if min or max have not been asigned a value this is because
1199 there was no data in the graph ... this is not good ...
1200 lets set these to dummy values then ... */
1202 if (im->logarithmic) {
1214 /* adjust min and max values */
1215 if (isnan(im->minval)
1216 /* don't adjust low-end with log scale *//* why not? */
1217 || ((!im->rigid) && im->minval > minval)
1219 if (im->logarithmic)
1220 im->minval = minval * 0.5;
1222 im->minval = minval;
1224 if (isnan(im->maxval)
1225 || (!im->rigid && im->maxval < maxval)
1227 if (im->logarithmic)
1228 im->maxval = maxval * 2.0;
1230 im->maxval = maxval;
1232 /* make sure min is smaller than max */
1233 if (im->minval > im->maxval) {
1234 im->minval = 0.99 * im->maxval;
1237 /* make sure min and max are not equal */
1238 if (im->minval == im->maxval) {
1240 if (!im->logarithmic) {
1243 /* make sure min and max are not both zero */
1244 if (im->maxval == 0.0) {
1253 /* identify the point where the first gridline, label ... gets placed */
1255 time_t find_first_time(
1256 time_t start, /* what is the initial time */
1257 enum tmt_en baseint, /* what is the basic interval */
1258 long basestep /* how many if these do we jump a time */
1263 localtime_r(&start, &tm);
1267 tm. tm_sec -= tm.tm_sec % basestep;
1272 tm. tm_min -= tm.tm_min % basestep;
1278 tm. tm_hour -= tm.tm_hour % basestep;
1282 /* we do NOT look at the basestep for this ... */
1289 /* we do NOT look at the basestep for this ... */
1293 tm. tm_mday -= tm.tm_wday - 1; /* -1 because we want the monday */
1295 if (tm.tm_wday == 0)
1296 tm. tm_mday -= 7; /* we want the *previous* monday */
1304 tm. tm_mon -= tm.tm_mon % basestep;
1315 tm.tm_year + 1900) %basestep;
1321 /* identify the point where the next gridline, label ... gets placed */
1322 time_t find_next_time(
1323 time_t current, /* what is the initial time */
1324 enum tmt_en baseint, /* what is the basic interval */
1325 long basestep /* how many if these do we jump a time */
1331 localtime_r(¤t, &tm);
1336 tm. tm_sec += basestep;
1340 tm. tm_min += basestep;
1344 tm. tm_hour += basestep;
1348 tm. tm_mday += basestep;
1352 tm. tm_mday += 7 * basestep;
1356 tm. tm_mon += basestep;
1360 tm. tm_year += basestep;
1362 madetime = mktime(&tm);
1363 } while (madetime == -1); /* this is necessary to skip impssible times
1364 like the daylight saving time skips */
1370 /* calculate values required for PRINT and GPRINT functions */
1376 long i, ii, validsteps;
1379 int graphelement = 0;
1382 double magfact = -1;
1387 /* wow initializing tmvdef is quite a task :-) */
1388 time_t now = time(NULL);
1390 localtime_r(&now, &tmvdef);
1393 for (i = 0; i < im->gdes_c; i++) {
1394 vidx = im->gdes[i].vidx;
1395 switch (im->gdes[i].gf) {
1399 rrd_realloc((*prdata), prlines * sizeof(char *))) == NULL) {
1400 rrd_set_error("realloc prdata");
1404 /* PRINT and GPRINT can now print VDEF generated values.
1405 * There's no need to do any calculations on them as these
1406 * calculations were already made.
1408 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1409 printval = im->gdes[vidx].vf.val;
1410 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1411 } else { /* need to calculate max,min,avg etcetera */
1412 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1413 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1416 for (ii = im->gdes[vidx].ds;
1417 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1418 if (!finite(im->gdes[vidx].data[ii]))
1420 if (isnan(printval)) {
1421 printval = im->gdes[vidx].data[ii];
1426 switch (im->gdes[i].cf) {
1429 case CF_DEVSEASONAL:
1433 printval += im->gdes[vidx].data[ii];
1436 printval = min(printval, im->gdes[vidx].data[ii]);
1440 printval = max(printval, im->gdes[vidx].data[ii]);
1443 printval = im->gdes[vidx].data[ii];
1446 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1447 if (validsteps > 1) {
1448 printval = (printval / validsteps);
1451 } /* prepare printval */
1453 if ((percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1454 /* Magfact is set to -1 upon entry to print_calc. If it
1455 * is still less than 0, then we need to run auto_scale.
1456 * Otherwise, put the value into the correct units. If
1457 * the value is 0, then do not set the symbol or magnification
1458 * so next the calculation will be performed again. */
1459 if (magfact < 0.0) {
1460 auto_scale(im, &printval, &si_symb, &magfact);
1461 if (printval == 0.0)
1464 printval /= magfact;
1466 *(++percent_s) = 's';
1467 } else if (strstr(im->gdes[i].format, "%s") != NULL) {
1468 auto_scale(im, &printval, &si_symb, &magfact);
1471 if (im->gdes[i].gf == GF_PRINT) {
1472 (*prdata)[prlines - 2] =
1473 malloc((FMT_LEG_LEN + 2) * sizeof(char));
1474 (*prdata)[prlines - 1] = NULL;
1475 if (im->gdes[i].strftm) {
1476 strftime((*prdata)[prlines - 2], FMT_LEG_LEN,
1477 im->gdes[i].format, &tmvdef);
1479 if (bad_format(im->gdes[i].format)) {
1480 rrd_set_error("bad format for PRINT in '%s'",
1481 im->gdes[i].format);
1484 #ifdef HAVE_SNPRINTF
1485 snprintf((*prdata)[prlines - 2], FMT_LEG_LEN,
1486 im->gdes[i].format, printval, si_symb);
1488 sprintf((*prdata)[prlines - 2], im->gdes[i].format,
1495 if (im->gdes[i].strftm) {
1496 strftime(im->gdes[i].legend, FMT_LEG_LEN,
1497 im->gdes[i].format, &tmvdef);
1499 if (bad_format(im->gdes[i].format)) {
1500 rrd_set_error("bad format for GPRINT in '%s'",
1501 im->gdes[i].format);
1504 #ifdef HAVE_SNPRINTF
1505 snprintf(im->gdes[i].legend, FMT_LEG_LEN - 2,
1506 im->gdes[i].format, printval, si_symb);
1508 sprintf(im->gdes[i].legend, im->gdes[i].format, printval,
1521 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1522 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1527 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1528 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1536 #ifdef WITH_PIECHART
1544 ("STACK should already be turned into LINE or AREA here");
1549 return graphelement;
1553 /* place legends with color spots */
1559 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1560 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1561 int fill = 0, fill_last;
1563 int leg_x = border, leg_y = im->yimg;
1564 int leg_y_prev = im->yimg;
1567 int i, ii, mark = 0;
1568 char prt_fctn; /*special printfunctions */
1571 if (!(im->extra_flags & NOLEGEND) & !(im->extra_flags & ONLY_GRAPH)) {
1572 if ((legspace = malloc(im->gdes_c * sizeof(int))) == NULL) {
1573 rrd_set_error("malloc for legspace");
1577 if (im->extra_flags & FULL_SIZE_MODE)
1578 leg_y = leg_y_prev = leg_y - (int) (im->text_prop[TEXT_PROP_LEGEND].size*1.8);
1580 for (i = 0; i < im->gdes_c; i++) {
1583 /* hide legends for rules which are not displayed */
1585 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1586 if (im->gdes[i].gf == GF_HRULE &&
1587 (im->gdes[i].yrule < im->minval
1588 || im->gdes[i].yrule > im->maxval))
1589 im->gdes[i].legend[0] = '\0';
1591 if (im->gdes[i].gf == GF_VRULE &&
1592 (im->gdes[i].xrule < im->start
1593 || im->gdes[i].xrule > im->end))
1594 im->gdes[i].legend[0] = '\0';
1597 leg_cc = strlen(im->gdes[i].legend);
1599 /* is there a controle code ant the end of the legend string ? */
1600 /* and it is not a tab \\t */
1601 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\'
1602 && im->gdes[i].legend[leg_cc - 1] != 't') {
1603 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1605 im->gdes[i].legend[leg_cc] = '\0';
1609 /* only valid control codes */
1610 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1615 prt_fctn != 't' && prt_fctn != '\0' && prt_fctn != 'g') {
1617 rrd_set_error("Unknown control code at the end of '%s\\%c'",
1618 im->gdes[i].legend, prt_fctn);
1623 /* remove exess space */
1624 if (prt_fctn == 'n') {
1628 while (prt_fctn == 'g' &&
1629 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1631 im->gdes[i].legend[leg_cc] = '\0';
1634 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1637 /* no interleg space if string ends in \g */
1638 fill += legspace[i];
1640 fill += gfx_get_text_width(im->canvas, fill + border,
1641 im->text_prop[TEXT_PROP_LEGEND].
1643 im->text_prop[TEXT_PROP_LEGEND].
1645 im->gdes[i].legend, 0);
1650 /* who said there was a special tag ... ? */
1651 if (prt_fctn == 'g') {
1654 if (prt_fctn == '\0') {
1655 if (i == im->gdes_c - 1)
1658 /* is it time to place the legends ? */
1659 if (fill > im->ximg - 2 * border) {
1674 if (prt_fctn != '\0') {
1676 if (leg_c >= 2 && prt_fctn == 'j') {
1677 glue = (im->ximg - fill - 2 * border) / (leg_c - 1);
1681 if (prt_fctn == 'c')
1682 leg_x = (im->ximg - fill) / 2.0;
1683 if (prt_fctn == 'r')
1684 leg_x = im->ximg - fill - border;
1686 for (ii = mark; ii <= i; ii++) {
1687 if (im->gdes[ii].legend[0] == '\0')
1688 continue; /* skip empty legends */
1689 im->gdes[ii].leg_x = leg_x;
1690 im->gdes[ii].leg_y = leg_y;
1692 gfx_get_text_width(im->canvas, leg_x,
1693 im->text_prop[TEXT_PROP_LEGEND].
1695 im->text_prop[TEXT_PROP_LEGEND].
1697 im->gdes[ii].legend, 0)
1702 if (im->extra_flags & FULL_SIZE_MODE) {
1703 /* only add y space if there was text on the line */
1704 if (leg_x > border || prt_fctn == 's')
1705 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1706 if (prt_fctn == 's')
1707 leg_y += im->text_prop[TEXT_PROP_LEGEND].size;
1709 if (leg_x > border || prt_fctn == 's')
1710 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1711 if (prt_fctn == 's')
1712 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1720 if (im->extra_flags & FULL_SIZE_MODE) {
1721 if (leg_y != leg_y_prev) {
1722 *gY = leg_y - im->text_prop[TEXT_PROP_LEGEND].size*1.8;
1723 im->yorigin = leg_y - im->text_prop[TEXT_PROP_LEGEND].size*1.8;
1726 im->yimg = leg_y_prev;
1727 /* if we did place some legends we have to add vertical space */
1728 if (leg_y != im->yimg)
1729 im->yimg += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1736 /* create a grid on the graph. it determines what to do
1737 from the values of xsize, start and end */
1739 /* the xaxis labels are determined from the number of seconds per pixel
1740 in the requested graph */
1744 int calc_horizontal_grid(
1751 int decimals, fractionals;
1753 im->ygrid_scale.labfact = 2;
1754 range = im->maxval - im->minval;
1755 scaledrange = range / im->magfact;
1757 /* does the scale of this graph make it impossible to put lines
1758 on it? If so, give up. */
1759 if (isnan(scaledrange)) {
1763 /* find grid spaceing */
1765 if (isnan(im->ygridstep)) {
1766 if (im->extra_flags & ALTYGRID) {
1767 /* find the value with max number of digits. Get number of digits */
1770 (max(fabs(im->maxval), fabs(im->minval)) *
1771 im->viewfactor / im->magfact));
1772 if (decimals <= 0) /* everything is small. make place for zero */
1775 im->ygrid_scale.gridstep =
1777 floor(log10(range * im->viewfactor / im->magfact))) /
1778 im->viewfactor * im->magfact;
1780 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1781 im->ygrid_scale.gridstep = 0.1;
1782 /* should have at least 5 lines but no more then 15 */
1783 if (range / im->ygrid_scale.gridstep < 5)
1784 im->ygrid_scale.gridstep /= 10;
1785 if (range / im->ygrid_scale.gridstep > 15)
1786 im->ygrid_scale.gridstep *= 10;
1787 if (range / im->ygrid_scale.gridstep > 5) {
1788 im->ygrid_scale.labfact = 1;
1789 if (range / im->ygrid_scale.gridstep > 8)
1790 im->ygrid_scale.labfact = 2;
1792 im->ygrid_scale.gridstep /= 5;
1793 im->ygrid_scale.labfact = 5;
1797 (im->ygrid_scale.gridstep *
1798 (double) im->ygrid_scale.labfact * im->viewfactor /
1800 if (fractionals < 0) { /* small amplitude. */
1801 int len = decimals - fractionals + 1;
1803 if (im->unitslength < len + 2)
1804 im->unitslength = len + 2;
1805 sprintf(im->ygrid_scale.labfmt, "%%%d.%df%s", len,
1806 -fractionals, (im->symbol != ' ' ? " %c" : ""));
1808 int len = decimals + 1;
1810 if (im->unitslength < len + 2)
1811 im->unitslength = len + 2;
1812 sprintf(im->ygrid_scale.labfmt, "%%%d.0f%s", len,
1813 (im->symbol != ' ' ? " %c" : ""));
1816 for (i = 0; ylab[i].grid > 0; i++) {
1817 pixel = im->ysize / (scaledrange / ylab[i].grid);
1823 for (i = 0; i < 4; i++) {
1824 if (pixel * ylab[gridind].lfac[i] >=
1825 2.5 * im->text_prop[TEXT_PROP_AXIS].size) {
1826 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
1831 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
1834 im->ygrid_scale.gridstep = im->ygridstep;
1835 im->ygrid_scale.labfact = im->ylabfact;
1840 int draw_horizontal_grid(
1845 char graph_label[100];
1847 double X0 = im->xorigin;
1848 double X1 = im->xorigin + im->xsize;
1850 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
1851 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
1855 im->ygrid_scale.gridstep / (double) im->magfact *
1856 (double) im->viewfactor;
1857 MaxY = scaledstep * (double) egrid;
1858 for (i = sgrid; i <= egrid; i++) {
1859 double Y0 = ytr(im, im->ygrid_scale.gridstep * i);
1860 double YN = ytr(im, im->ygrid_scale.gridstep * (i + 1));
1862 if (floor(Y0 + 0.5) >= im->yorigin - im->ysize
1863 && floor(Y0 + 0.5) <= im->yorigin) {
1864 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
1865 with the chosen settings. Add a label if required by settings, or if
1866 there is only one label so far and the next grid line is out of bounds. */
1867 if (i % im->ygrid_scale.labfact == 0
1869 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
1870 if (im->symbol == ' ') {
1871 if (im->extra_flags & ALTYGRID) {
1872 sprintf(graph_label, im->ygrid_scale.labfmt,
1873 scaledstep * (double) i);
1876 sprintf(graph_label, "%4.1f",
1877 scaledstep * (double) i);
1879 sprintf(graph_label, "%4.0f",
1880 scaledstep * (double) i);
1884 char sisym = (i == 0 ? ' ' : im->symbol);
1886 if (im->extra_flags & ALTYGRID) {
1887 sprintf(graph_label, im->ygrid_scale.labfmt,
1888 scaledstep * (double) i, sisym);
1891 sprintf(graph_label, "%4.1f %c",
1892 scaledstep * (double) i, sisym);
1894 sprintf(graph_label, "%4.0f %c",
1895 scaledstep * (double) i, sisym);
1901 gfx_new_text(im->canvas,
1902 X0 - im->text_prop[TEXT_PROP_AXIS].size, Y0,
1903 im->graph_col[GRC_FONT],
1904 im->text_prop[TEXT_PROP_AXIS].font,
1905 im->text_prop[TEXT_PROP_AXIS].size,
1906 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
1908 gfx_new_dashed_line(im->canvas,
1911 MGRIDWIDTH, im->graph_col[GRC_MGRID],
1912 im->grid_dash_on, im->grid_dash_off);
1914 } else if (!(im->extra_flags & NOMINOR)) {
1915 gfx_new_dashed_line(im->canvas,
1918 GRIDWIDTH, im->graph_col[GRC_GRID],
1919 im->grid_dash_on, im->grid_dash_off);
1927 /* this is frexp for base 10 */
1938 iexp = floor(log(fabs(x)) / log(10));
1939 mnt = x / pow(10.0, iexp);
1942 mnt = x / pow(10.0, iexp);
1948 static int AlmostEqual2sComplement(
1954 int aInt = *(int *) &A;
1955 int bInt = *(int *) &B;
1958 /* Make sure maxUlps is non-negative and small enough that the
1959 default NAN won't compare as equal to anything. */
1961 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1963 /* Make aInt lexicographically ordered as a twos-complement int */
1966 aInt = 0x80000000l - aInt;
1968 /* Make bInt lexicographically ordered as a twos-complement int */
1971 bInt = 0x80000000l - bInt;
1973 intDiff = abs(aInt - bInt);
1975 if (intDiff <= maxUlps)
1981 /* logaritmic horizontal grid */
1982 int horizontal_log_grid(
1985 double yloglab[][10] = {
1986 {1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
1987 {1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
1988 {1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0},
1989 {1.0, 2.0, 4.0, 6.0, 8.0, 10., 0.0, 0.0, 0.0, 0.0},
1990 {1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.},
1991 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
1994 int i, j, val_exp, min_exp;
1995 double nex; /* number of decades in data */
1996 double logscale; /* scale in logarithmic space */
1997 int exfrac = 1; /* decade spacing */
1998 int mid = -1; /* row in yloglab for major grid */
1999 double mspac; /* smallest major grid spacing (pixels) */
2000 int flab; /* first value in yloglab to use */
2001 double value, tmp, pre_value;
2003 char graph_label[100];
2005 nex = log10(im->maxval / im->minval);
2006 logscale = im->ysize / nex;
2008 /* major spacing for data with high dynamic range */
2009 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2016 /* major spacing for less dynamic data */
2018 /* search best row in yloglab */
2020 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2021 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2022 } while (mspac > 2 * im->text_prop[TEXT_PROP_LEGEND].size
2023 && yloglab[mid][0] > 0);
2027 /* find first value in yloglab */
2029 yloglab[mid][flab] < 10
2030 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2031 if (yloglab[mid][flab] == 10.0) {
2036 if (val_exp % exfrac)
2037 val_exp += abs(-val_exp % exfrac);
2040 X1 = im->xorigin + im->xsize;
2046 value = yloglab[mid][flab] * pow(10.0, val_exp);
2047 if (AlmostEqual2sComplement(value, pre_value, 4))
2048 break; /* it seems we are not converging */
2052 Y0 = ytr(im, value);
2053 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2056 /* major grid line */
2057 gfx_new_dashed_line(im->canvas,
2060 MGRIDWIDTH, im->graph_col[GRC_MGRID],
2061 im->grid_dash_on, im->grid_dash_off);
2064 if (im->extra_flags & FORCE_UNITS_SI) {
2069 scale = floor(val_exp / 3.0);
2071 pvalue = pow(10.0, val_exp % 3);
2073 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2074 pvalue *= yloglab[mid][flab];
2076 if (((scale + si_symbcenter) < (int) sizeof(si_symbol)) &&
2077 ((scale + si_symbcenter) >= 0))
2078 symbol = si_symbol[scale + si_symbcenter];
2082 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2084 sprintf(graph_label, "%3.0e", value);
2085 gfx_new_text(im->canvas,
2086 X0 - im->text_prop[TEXT_PROP_AXIS].size, Y0,
2087 im->graph_col[GRC_FONT],
2088 im->text_prop[TEXT_PROP_AXIS].font,
2089 im->text_prop[TEXT_PROP_AXIS].size,
2090 im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER,
2094 if (mid < 4 && exfrac == 1) {
2095 /* find first and last minor line behind current major line
2096 * i is the first line and j tha last */
2098 min_exp = val_exp - 1;
2099 for (i = 1; yloglab[mid][i] < 10.0; i++);
2100 i = yloglab[mid][i - 1] + 1;
2104 i = yloglab[mid][flab - 1] + 1;
2105 j = yloglab[mid][flab];
2108 /* draw minor lines below current major line */
2109 for (; i < j; i++) {
2111 value = i * pow(10.0, min_exp);
2112 if (value < im->minval)
2115 Y0 = ytr(im, value);
2116 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2120 gfx_new_dashed_line(im->canvas,
2123 GRIDWIDTH, im->graph_col[GRC_GRID],
2124 im->grid_dash_on, im->grid_dash_off);
2126 } else if (exfrac > 1) {
2127 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2128 value = pow(10.0, i);
2129 if (value < im->minval)
2132 Y0 = ytr(im, value);
2133 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2137 gfx_new_dashed_line(im->canvas,
2140 GRIDWIDTH, im->graph_col[GRC_GRID],
2141 im->grid_dash_on, im->grid_dash_off);
2146 if (yloglab[mid][++flab] == 10.0) {
2152 /* draw minor lines after highest major line */
2153 if (mid < 4 && exfrac == 1) {
2154 /* find first and last minor line below current major line
2155 * i is the first line and j tha last */
2157 min_exp = val_exp - 1;
2158 for (i = 1; yloglab[mid][i] < 10.0; i++);
2159 i = yloglab[mid][i - 1] + 1;
2163 i = yloglab[mid][flab - 1] + 1;
2164 j = yloglab[mid][flab];
2167 /* draw minor lines below current major line */
2168 for (; i < j; i++) {
2170 value = i * pow(10.0, min_exp);
2171 if (value < im->minval)
2174 Y0 = ytr(im, value);
2175 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2179 gfx_new_dashed_line(im->canvas,
2182 GRIDWIDTH, im->graph_col[GRC_GRID],
2183 im->grid_dash_on, im->grid_dash_off);
2186 /* fancy minor gridlines */
2187 else if (exfrac > 1) {
2188 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2189 value = pow(10.0, i);
2190 if (value < im->minval)
2193 Y0 = ytr(im, value);
2194 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2198 gfx_new_dashed_line(im->canvas,
2201 GRIDWIDTH, im->graph_col[GRC_GRID],
2202 im->grid_dash_on, im->grid_dash_off);
2213 int xlab_sel; /* which sort of label and grid ? */
2214 time_t ti, tilab, timajor;
2216 char graph_label[100];
2217 double X0, Y0, Y1; /* points for filled graph and more */
2220 /* the type of time grid is determined by finding
2221 the number of seconds per pixel in the graph */
2224 if (im->xlab_user.minsec == -1) {
2225 factor = (im->end - im->start) / im->xsize;
2227 while (xlab[xlab_sel + 1].minsec != -1
2228 && xlab[xlab_sel + 1].minsec <= factor) {
2230 } /* pick the last one */
2231 while (xlab[xlab_sel - 1].minsec == xlab[xlab_sel].minsec
2232 && xlab[xlab_sel].length > (im->end - im->start)) {
2234 } /* go back to the smallest size */
2235 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2236 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2237 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2238 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2239 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2240 im->xlab_user.labst = xlab[xlab_sel].labst;
2241 im->xlab_user.precis = xlab[xlab_sel].precis;
2242 im->xlab_user.stst = xlab[xlab_sel].stst;
2245 /* y coords are the same for every line ... */
2247 Y1 = im->yorigin - im->ysize;
2250 /* paint the minor grid */
2251 if (!(im->extra_flags & NOMINOR)) {
2252 for (ti = find_first_time(im->start,
2253 im->xlab_user.gridtm,
2254 im->xlab_user.gridst),
2255 timajor = find_first_time(im->start,
2256 im->xlab_user.mgridtm,
2257 im->xlab_user.mgridst);
2260 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2262 /* are we inside the graph ? */
2263 if (ti < im->start || ti > im->end)
2265 while (timajor < ti) {
2266 timajor = find_next_time(timajor,
2267 im->xlab_user.mgridtm,
2268 im->xlab_user.mgridst);
2271 continue; /* skip as falls on major grid line */
2273 gfx_new_dashed_line(im->canvas, X0, Y0 + 1, X0, Y1 - 1, GRIDWIDTH,
2274 im->graph_col[GRC_GRID],
2275 im->grid_dash_on, im->grid_dash_off);
2280 /* paint the major grid */
2281 for (ti = find_first_time(im->start,
2282 im->xlab_user.mgridtm,
2283 im->xlab_user.mgridst);
2285 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2287 /* are we inside the graph ? */
2288 if (ti < im->start || ti > im->end)
2291 gfx_new_dashed_line(im->canvas, X0, Y0 + 3, X0, Y1 - 2, MGRIDWIDTH,
2292 im->graph_col[GRC_MGRID],
2293 im->grid_dash_on, im->grid_dash_off);
2296 /* paint the labels below the graph */
2297 for (ti = find_first_time(im->start - im->xlab_user.precis / 2,
2298 im->xlab_user.labtm,
2299 im->xlab_user.labst);
2300 ti <= im->end - im->xlab_user.precis / 2;
2301 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2303 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2304 /* are we inside the graph ? */
2305 if (tilab < im->start || tilab > im->end)
2309 localtime_r(&tilab, &tm);
2310 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2312 # error "your libc has no strftime I guess we'll abort the exercise here."
2314 gfx_new_text(im->canvas,
2316 Y0 + im->text_prop[TEXT_PROP_AXIS].size * 1.4 + 5,
2317 im->graph_col[GRC_FONT],
2318 im->text_prop[TEXT_PROP_AXIS].font,
2319 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 0.0,
2320 GFX_H_CENTER, GFX_V_BOTTOM, graph_label);
2330 /* draw x and y axis */
2331 /* gfx_new_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2332 im->xorigin+im->xsize,im->yorigin-im->ysize,
2333 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2335 gfx_new_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2336 im->xorigin+im->xsize,im->yorigin-im->ysize,
2337 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2339 gfx_new_line(im->canvas, im->xorigin - 4, im->yorigin,
2340 im->xorigin + im->xsize + 4, im->yorigin,
2341 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2343 gfx_new_line(im->canvas, im->xorigin, im->yorigin + 4,
2344 im->xorigin, im->yorigin - im->ysize - 4,
2345 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2348 /* arrow for X and Y axis direction */
2349 gfx_new_area(im->canvas, im->xorigin + im->xsize + 2, im->yorigin - 2, im->xorigin + im->xsize + 2, im->yorigin + 3, im->xorigin + im->xsize + 7, im->yorigin + 0.5, /* LINEOFFSET */
2350 im->graph_col[GRC_ARROW]);
2352 gfx_new_area(im->canvas, im->xorigin - 2, im->yorigin - im->ysize - 2, im->xorigin + 3, im->yorigin - im->ysize - 2, im->xorigin + 0.5, im->yorigin - im->ysize - 7, /* LINEOFFSET */
2353 im->graph_col[GRC_ARROW]);
2362 double X0, Y0; /* points for filled graph and more */
2365 /* draw 3d border */
2366 node = gfx_new_area(im->canvas, 0, im->yimg,
2367 2, im->yimg - 2, 2, 2, im->graph_col[GRC_SHADEA]);
2368 gfx_add_point(node, im->ximg - 2, 2);
2369 gfx_add_point(node, im->ximg, 0);
2370 gfx_add_point(node, 0, 0);
2371 /* gfx_add_point( node , 0,im->yimg ); */
2373 node = gfx_new_area(im->canvas, 2, im->yimg - 2,
2374 im->ximg - 2, im->yimg - 2,
2375 im->ximg - 2, 2, im->graph_col[GRC_SHADEB]);
2376 gfx_add_point(node, im->ximg, 0);
2377 gfx_add_point(node, im->ximg, im->yimg);
2378 gfx_add_point(node, 0, im->yimg);
2379 /* gfx_add_point( node , 0,im->yimg ); */
2382 if (im->draw_x_grid == 1)
2385 if (im->draw_y_grid == 1) {
2386 if (im->logarithmic) {
2387 res = horizontal_log_grid(im);
2389 res = draw_horizontal_grid(im);
2392 /* dont draw horizontal grid if there is no min and max val */
2394 char *nodata = "No Data found";
2396 gfx_new_text(im->canvas, im->ximg / 2,
2397 (2 * im->yorigin - im->ysize) / 2,
2398 im->graph_col[GRC_FONT],
2399 im->text_prop[TEXT_PROP_AXIS].font,
2400 im->text_prop[TEXT_PROP_AXIS].size, im->tabwidth,
2401 0.0, GFX_H_CENTER, GFX_V_CENTER, nodata);
2405 /* yaxis unit description */
2406 gfx_new_text(im->canvas,
2407 10, (im->yorigin - im->ysize / 2),
2408 im->graph_col[GRC_FONT],
2409 im->text_prop[TEXT_PROP_UNIT].font,
2410 im->text_prop[TEXT_PROP_UNIT].size, im->tabwidth,
2411 RRDGRAPH_YLEGEND_ANGLE,
2412 GFX_H_LEFT, GFX_V_CENTER, im->ylegend);
2415 gfx_new_text(im->canvas,
2416 im->ximg / 2, im->text_prop[TEXT_PROP_TITLE].size * 1.3 + 4,
2417 im->graph_col[GRC_FONT],
2418 im->text_prop[TEXT_PROP_TITLE].font,
2419 im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
2420 GFX_H_CENTER, GFX_V_CENTER, im->title);
2421 /* rrdtool 'logo' */
2422 gfx_new_text(im->canvas,
2424 (im->graph_col[GRC_FONT] & 0xffffff00) | 0x00000044,
2425 im->text_prop[TEXT_PROP_AXIS].font,
2426 5.5, im->tabwidth, 270,
2427 GFX_H_RIGHT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2429 /* graph watermark */
2430 if (im->watermark[0] != '\0') {
2431 gfx_new_text(im->canvas,
2432 im->ximg / 2, im->yimg - 6,
2433 (im->graph_col[GRC_FONT] & 0xffffff00) | 0x00000044,
2434 im->text_prop[TEXT_PROP_AXIS].font,
2435 5.5, im->tabwidth, 0,
2436 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2440 if (!(im->extra_flags & NOLEGEND) & !(im->extra_flags & ONLY_GRAPH)) {
2441 for (i = 0; i < im->gdes_c; i++) {
2442 if (im->gdes[i].legend[0] == '\0')
2445 /* im->gdes[i].leg_y is the bottom of the legend */
2446 X0 = im->gdes[i].leg_x;
2447 Y0 = im->gdes[i].leg_y;
2448 gfx_new_text(im->canvas, X0, Y0,
2449 im->graph_col[GRC_FONT],
2450 im->text_prop[TEXT_PROP_LEGEND].font,
2451 im->text_prop[TEXT_PROP_LEGEND].size,
2452 im->tabwidth, 0.0, GFX_H_LEFT, GFX_V_BOTTOM,
2453 im->gdes[i].legend);
2454 /* The legend for GRAPH items starts with "M " to have
2455 enough space for the box */
2456 if (im->gdes[i].gf != GF_PRINT &&
2457 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2460 boxH = gfx_get_text_width(im->canvas, 0,
2461 im->text_prop[TEXT_PROP_LEGEND].
2463 im->text_prop[TEXT_PROP_LEGEND].
2464 size, im->tabwidth, "o", 0) * 1.2;
2467 /* make sure transparent colors show up the same way as in the graph */
2468 node = gfx_new_area(im->canvas,
2471 X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2472 gfx_add_point(node, X0 + boxH, Y0 - boxV);
2474 node = gfx_new_area(im->canvas,
2476 X0, Y0, X0 + boxH, Y0, im->gdes[i].col);
2477 gfx_add_point(node, X0 + boxH, Y0 - boxV);
2478 node = gfx_new_line(im->canvas,
2480 X0, Y0, 1.0, im->graph_col[GRC_FRAME]);
2481 gfx_add_point(node, X0 + boxH, Y0);
2482 gfx_add_point(node, X0 + boxH, Y0 - boxV);
2483 gfx_close_path(node);
2490 /*****************************************************
2491 * lazy check make sure we rely need to create this graph
2492 *****************************************************/
2499 struct stat imgstat;
2502 return 0; /* no lazy option */
2503 if (stat(im->graphfile, &imgstat) != 0)
2504 return 0; /* can't stat */
2505 /* one pixel in the existing graph is more then what we would
2507 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2509 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2510 return 0; /* the file does not exist */
2511 switch (im->canvas->imgformat) {
2513 size = PngSize(fd, &(im->ximg), &(im->yimg));
2522 #ifdef WITH_PIECHART
2534 double step = M_PI / 50; /* Number of iterations for the circle;
2535 ** 10 is definitely too low, more than
2536 ** 50 seems to be overkill
2539 /* Strange but true: we have to work clockwise or else
2540 ** anti aliasing nor transparency don't work.
2542 ** This test is here to make sure we do it right, also
2543 ** this makes the for...next loop more easy to implement.
2544 ** The return will occur if the user enters a negative number
2545 ** (which shouldn't be done according to the specs) or if the
2546 ** programmers do something wrong (which, as we all know, never
2547 ** happens anyway :)
2549 if (endangle < startangle)
2552 /* Hidden feature: Radius decreases each full circle */
2554 while (angle >= 2 * M_PI) {
2559 node = gfx_new_area(im->canvas,
2560 PieCenterX + sin(startangle) * Radius,
2561 PieCenterY - cos(startangle) * Radius,
2564 PieCenterX + sin(endangle) * Radius,
2565 PieCenterY - cos(endangle) * Radius, color);
2566 for (angle = endangle; angle - startangle >= step; angle -= step) {
2568 PieCenterX + sin(angle) * Radius,
2569 PieCenterY - cos(angle) * Radius);
2575 int graph_size_location(
2578 #ifdef WITH_PIECHART
2584 /* The actual size of the image to draw is determined from
2585 ** several sources. The size given on the command line is
2586 ** the graph area but we need more as we have to draw labels
2587 ** and other things outside the graph area
2590 int Xvertical = 0, Ytitle = 0, Xylabel = 0, Xmain = 0, Ymain = 0,
2591 #ifdef WITH_PIECHART
2596 Xlegend = 0, Ylegend = 0,
2598 Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2600 if (im->extra_flags & ONLY_GRAPH) {
2602 im->ximg = im->xsize;
2603 im->yimg = im->ysize;
2604 im->yorigin = im->ysize;
2609 /** +---+--------------------------------------------+
2610 ** | y |...............graph title..................|
2611 ** | +---+-------------------------------+--------+
2614 ** | i | a | | pie |
2615 ** | s | x | main graph area | chart |
2620 ** | l | b +-------------------------------+--------+
2621 ** | e | l | x axis labels | |
2622 ** +---+---+-------------------------------+--------+
2623 ** |....................legends.....................|
2624 ** +------------------------------------------------+
2626 ** +------------------------------------------------+
2629 if (im->ylegend[0] != '\0' ) {
2630 Xvertical = im->text_prop[TEXT_PROP_UNIT].size *2;
2633 if (im->title[0] != '\0') {
2634 /* The title is placed "inbetween" two text lines so it
2635 ** automatically has some vertical spacing. The horizontal
2636 ** spacing is added here, on each side.
2638 /* if necessary, reduce the font size of the title until it fits the image width */
2639 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2.6+10;
2643 if (im->draw_x_grid) {
2644 Yxlabel=im->text_prop[TEXT_PROP_AXIS].size *2.5;
2646 if (im->draw_y_grid || im->forceleftspace ) {
2647 Xylabel=gfx_get_text_width(im->canvas, 0,
2648 im->text_prop[TEXT_PROP_AXIS].font,
2649 im->text_prop[TEXT_PROP_AXIS].size,
2651 "0", 0) * im->unitslength;
2655 if (im->extra_flags & FULL_SIZE_MODE) {
2656 /* The actual size of the image to draw has been determined by the user.
2657 ** The graph area is the space remaining after accounting for the legend,
2658 ** the watermark, the pie chart, the axis labels, and the title.
2661 im->ximg = im->xsize;
2662 im->yimg = im->ysize;
2663 im->yorigin = im->ysize;
2667 im->yorigin += Ytitle;
2669 #ifdef WITH_PIECHART
2671 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
2677 /* Now calculate the total size. Insert some spacing where
2678 desired. im->xorigin and im->yorigin need to correspond
2679 with the lower left corner of the main graph area or, if
2680 this one is not set, the imaginary box surrounding the
2683 /* Initial size calculation for the main graph area */
2684 Xmain = im->ximg - (Xylabel + 2 * Xspacing);
2685 if (Xmain) Xmain -= Xspacing; /* put space between main graph area and right edge */
2687 #ifdef WITH_PIECHART
2688 Xmain -= Xpie; /* remove pie width from main graph area */
2689 if (Xpie) Xmain -= Xspacing; /* put space between pie and main graph area */
2692 im->xorigin = Xspacing + Xylabel;
2694 /* the length of the title should not influence with width of the graph
2695 if (Xtitle > im->ximg) im->ximg = Xtitle; */
2697 if (Xvertical) { /* unit description */
2699 im->xorigin += Xvertical;
2704 /* The vertical size of the image is known in advance. The main graph area
2705 ** (Ymain) and im->yorigin must be set according to the space requirements
2706 ** of the legend and the axis labels.
2709 /* Determine where to place the legends onto the image.
2710 ** Set Ymain and adjust im->yorigin to match the space requirements.
2712 if (leg_place(im,&Ymain)==-1)
2715 #ifdef WITH_PIECHART
2716 /* if (im->yimg < Ypie) im->yimg = Ypie; * not sure what do about this */
2719 /* remove title space *or* some padding above the graph from the main graph area */
2723 Ymain -= 1.5*Yspacing;
2726 /* watermark doesn't seem to effect the vertical size of the main graph area, oh well! */
2727 if (im->watermark[0] != '\0') {
2728 Ymain -= Ywatermark;
2733 } else /* dimension options -width and -height refer to the dimensions of the main graph area */
2735 /* The actual size of the image to draw is determined from
2736 ** several sources. The size given on the command line is
2737 ** the graph area but we need more as we have to draw labels
2738 ** and other things outside the graph area.
2741 if (im->ylegend[0] != '\0' ) {
2742 Xvertical = im->text_prop[TEXT_PROP_UNIT].size *2;
2746 if (im->title[0] != '\0') {
2747 /* The title is placed "inbetween" two text lines so it
2748 ** automatically has some vertical spacing. The horizontal
2749 ** spacing is added here, on each side.
2751 /* don't care for the with of the title
2752 Xtitle = gfx_get_text_width(im->canvas, 0,
2753 im->text_prop[TEXT_PROP_TITLE].font,
2754 im->text_prop[TEXT_PROP_TITLE].size,
2756 im->title, 0) + 2*Xspacing; */
2757 Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2.6+10;
2765 #ifdef WITH_PIECHART
2767 im->piesize=im->xsize<im->ysize?im->xsize:im->ysize;
2773 /* Now calculate the total size. Insert some spacing where
2774 desired. im->xorigin and im->yorigin need to correspond
2775 with the lower left corner of the main graph area or, if
2776 this one is not set, the imaginary box surrounding the
2779 /* The legend width cannot yet be determined, as a result we
2780 ** have problems adjusting the image to it. For now, we just
2781 ** forget about it at all; the legend will have to fit in the
2782 ** size already allocated.
2784 im->ximg = Xylabel + Xmain + 2 * Xspacing;
2786 #ifdef WITH_PIECHART
2790 if (Xmain) im->ximg += Xspacing;
2791 #ifdef WITH_PIECHART
2792 if (Xpie) im->ximg += Xspacing;
2795 im->xorigin = Xspacing + Xylabel;
2797 /* the length of the title should not influence with width of the graph
2798 if (Xtitle > im->ximg) im->ximg = Xtitle; */
2800 if (Xvertical) { /* unit description */
2801 im->ximg += Xvertical;
2802 im->xorigin += Xvertical;
2806 /* The vertical size is interesting... we need to compare
2807 ** the sum of {Ytitle, Ymain, Yxlabel, Ylegend, Ywatermark} with
2808 ** Yvertical however we need to know {Ytitle+Ymain+Yxlabel}
2809 ** in order to start even thinking about Ylegend or Ywatermark.
2811 ** Do it in three portions: First calculate the inner part,
2812 ** then do the legend, then adjust the total height of the img,
2813 ** adding space for a watermark if one exists;
2816 /* reserve space for main and/or pie */
2818 im->yimg = Ymain + Yxlabel;
2820 #ifdef WITH_PIECHART
2821 if (im->yimg < Ypie) im->yimg = Ypie;
2824 im->yorigin = im->yimg - Yxlabel;
2826 /* reserve space for the title *or* some padding above the graph */
2829 im->yorigin += Ytitle;
2831 im->yimg += 1.5*Yspacing;
2832 im->yorigin += 1.5*Yspacing;
2834 /* reserve space for padding below the graph */
2835 im->yimg += Yspacing;
2837 /* Determine where to place the legends onto the image.
2838 ** Adjust im->yimg to match the space requirements.
2840 if(leg_place(im,0)==-1)
2843 if (im->watermark[0] != '\0') {
2844 im->yimg += Ywatermark;
2849 if (Xlegend > im->ximg) {
2851 /* reposition Pie */
2855 #ifdef WITH_PIECHART
2856 /* The pie is placed in the upper right hand corner,
2857 ** just below the title (if any) and with sufficient
2861 im->pie_x = im->ximg - Xspacing - Xpie/2;
2862 im->pie_y = im->yorigin-Ymain+Ypie/2;
2864 im->pie_x = im->ximg/2;
2865 im->pie_y = im->yorigin-Ypie/2;
2873 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
2874 /* yes we are loosing precision by doing tos with floats instead of doubles
2875 but it seems more stable this way. */
2878 /* draw that picture thing ... */
2884 int lazy = lazy_check(im);
2886 #ifdef WITH_PIECHART
2888 double PieStart = 0.0;
2893 double areazero = 0.0;
2894 graph_desc_t *lastgdes = NULL;
2896 /* if we are lazy and there is nothing to PRINT ... quit now */
2897 if (lazy && im->prt_c == 0)
2900 /* pull the data from the rrd files ... */
2902 if (data_fetch(im) == -1)
2905 /* evaluate VDEF and CDEF operations ... */
2906 if (data_calc(im) == -1)
2909 #ifdef WITH_PIECHART
2910 /* check if we need to draw a piechart */
2911 for (i = 0; i < im->gdes_c; i++) {
2912 if (im->gdes[i].gf == GF_PART) {
2919 /* calculate and PRINT and GPRINT definitions. We have to do it at
2920 * this point because it will affect the length of the legends
2921 * if there are no graph elements we stop here ...
2922 * if we are lazy, try to quit ...
2924 i = print_calc(im, calcpr);
2928 #ifdef WITH_PIECHART
2934 #ifdef WITH_PIECHART
2935 /* If there's only the pie chart to draw, signal this */
2940 /**************************************************************
2941 *** Calculating sizes and locations became a bit confusing ***
2942 *** so I moved this into a separate function. ***
2943 **************************************************************/
2944 if (graph_size_location(im, i
2945 #ifdef WITH_PIECHART
2951 /* get actual drawing data and find min and max values */
2952 if (data_proc(im) == -1)
2955 if (!im->logarithmic) {
2958 /* identify si magnitude Kilo, Mega Giga ? */
2959 if (!im->rigid && !im->logarithmic)
2960 expand_range(im); /* make sure the upper and lower limit are
2963 if (!calc_horizontal_grid(im))
2969 /* the actual graph is created by going through the individual
2970 graph elements and then drawing them */
2972 node = gfx_new_area(im->canvas,
2975 im->ximg, im->yimg, im->graph_col[GRC_BACK]);
2977 gfx_add_point(node, im->ximg, 0);
2979 #ifdef WITH_PIECHART
2980 if (piechart != 2) {
2982 node = gfx_new_area(im->canvas,
2983 im->xorigin, im->yorigin,
2984 im->xorigin + im->xsize, im->yorigin,
2985 im->xorigin + im->xsize, im->yorigin - im->ysize,
2986 im->graph_col[GRC_CANVAS]);
2988 gfx_add_point(node, im->xorigin, im->yorigin - im->ysize);
2990 if (im->minval > 0.0)
2991 areazero = im->minval;
2992 if (im->maxval < 0.0)
2993 areazero = im->maxval;
2994 #ifdef WITH_PIECHART
2998 #ifdef WITH_PIECHART
3000 pie_part(im, im->graph_col[GRC_CANVAS], im->pie_x, im->pie_y,
3001 im->piesize * 0.5, 0, 2 * M_PI);
3005 for (i = 0; i < im->gdes_c; i++) {
3006 switch (im->gdes[i].gf) {
3019 for (ii = 0; ii < im->xsize; ii++) {
3020 if (!isnan(im->gdes[i].p_data[ii]) &&
3021 im->gdes[i].p_data[ii] != 0.0) {
3022 if (im->gdes[i].yrule > 0) {
3023 gfx_new_line(im->canvas,
3024 im->xorigin + ii, im->yorigin,
3027 im->gdes[i].yrule * im->ysize, 1.0,
3029 } else if (im->gdes[i].yrule < 0) {
3030 gfx_new_line(im->canvas,
3032 im->yorigin - im->ysize,
3035 im->gdes[i].yrule) *
3036 im->ysize, 1.0, im->gdes[i].col);
3044 /* fix data points at oo and -oo */
3045 for (ii = 0; ii < im->xsize; ii++) {
3046 if (isinf(im->gdes[i].p_data[ii])) {
3047 if (im->gdes[i].p_data[ii] > 0) {
3048 im->gdes[i].p_data[ii] = im->maxval;
3050 im->gdes[i].p_data[ii] = im->minval;
3056 /* *******************************************************
3061 -------|--t-1--t--------------------------------
3063 if we know the value at time t was a then
3064 we draw a square from t-1 to t with the value a.
3066 ********************************************************* */
3067 if (im->gdes[i].col != 0x0) {
3068 /* GF_LINE and friend */
3069 if (im->gdes[i].gf == GF_LINE) {
3070 double last_y = 0.0;
3073 for (ii = 1; ii < im->xsize; ii++) {
3074 if (isnan(im->gdes[i].p_data[ii])
3075 || (im->slopemode == 1
3076 && isnan(im->gdes[i].p_data[ii - 1]))) {
3081 last_y = ytr(im, im->gdes[i].p_data[ii]);
3082 if (im->slopemode == 0) {
3083 node = gfx_new_line(im->canvas,
3084 ii - 1 + im->xorigin,
3085 last_y, ii + im->xorigin,
3087 im->gdes[i].linewidth,
3090 node = gfx_new_line(im->canvas,
3091 ii - 1 + im->xorigin,
3095 ii + im->xorigin, last_y,
3096 im->gdes[i].linewidth,
3100 double new_y = ytr(im, im->gdes[i].p_data[ii]);
3102 if (im->slopemode == 0
3103 && !AlmostEqual2sComplement(new_y, last_y,
3105 gfx_add_point(node, ii - 1 + im->xorigin,
3109 gfx_add_point(node, ii + im->xorigin, new_y);
3115 double *foreY = malloc(sizeof(double) * im->xsize * 2);
3116 double *foreX = malloc(sizeof(double) * im->xsize * 2);
3117 double *backY = malloc(sizeof(double) * im->xsize * 2);
3118 double *backX = malloc(sizeof(double) * im->xsize * 2);
3121 for (ii = 0; ii <= im->xsize; ii++) {
3124 if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
3129 && AlmostEqual2sComplement(foreY[lastI],
3131 && AlmostEqual2sComplement(foreY[lastI],
3136 node = gfx_new_area(im->canvas,
3139 foreX[cntI], foreY[cntI],
3141 while (cntI < idxI) {
3146 AlmostEqual2sComplement(foreY[lastI],
3149 AlmostEqual2sComplement(foreY[lastI],
3154 gfx_add_point(node, foreX[cntI], foreY[cntI]);
3156 gfx_add_point(node, backX[idxI], backY[idxI]);
3162 AlmostEqual2sComplement(backY[lastI],
3165 AlmostEqual2sComplement(backY[lastI],
3170 gfx_add_point(node, backX[idxI], backY[idxI]);
3179 if (ii == im->xsize)
3182 /* keep things simple for now, just draw these bars
3183 do not try to build a big and complex area */
3186 if (im->slopemode == 0 && ii == 0) {
3189 if (isnan(im->gdes[i].p_data[ii])) {
3193 ytop = ytr(im, im->gdes[i].p_data[ii]);
3194 if (lastgdes && im->gdes[i].stack) {
3195 ybase = ytr(im, lastgdes->p_data[ii]);
3197 ybase = ytr(im, areazero);
3199 if (ybase == ytop) {
3203 /* every area has to be wound clock-wise,
3204 so we have to make sur base remains base */
3206 double extra = ytop;
3211 if (im->slopemode == 0) {
3212 backY[++idxI] = ybase - 0.2;
3213 backX[idxI] = ii + im->xorigin - 1;
3214 foreY[idxI] = ytop + 0.2;
3215 foreX[idxI] = ii + im->xorigin - 1;
3217 backY[++idxI] = ybase - 0.2;
3218 backX[idxI] = ii + im->xorigin;
3219 foreY[idxI] = ytop + 0.2;
3220 foreX[idxI] = ii + im->xorigin;
3222 /* close up any remaining area */
3227 } /* else GF_LINE */
3229 /* if color != 0x0 */
3230 /* make sure we do not run into trouble when stacking on NaN */
3231 for (ii = 0; ii < im->xsize; ii++) {
3232 if (isnan(im->gdes[i].p_data[ii])) {
3233 if (lastgdes && (im->gdes[i].stack)) {
3234 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
3236 im->gdes[i].p_data[ii] = areazero;
3240 lastgdes = &(im->gdes[i]);
3242 #ifdef WITH_PIECHART
3244 if (isnan(im->gdes[i].yrule)) /* fetch variable */
3245 im->gdes[i].yrule = im->gdes[im->gdes[i].vidx].vf.val;
3247 if (finite(im->gdes[i].yrule)) { /* even the fetched var can be NaN */
3248 pie_part(im, im->gdes[i].col,
3249 im->pie_x, im->pie_y, im->piesize * 0.4,
3250 M_PI * 2.0 * PieStart / 100.0,
3251 M_PI * 2.0 * (PieStart + im->gdes[i].yrule) / 100.0);
3252 PieStart += im->gdes[i].yrule;
3258 ("STACK should already be turned into LINE or AREA here");
3264 #ifdef WITH_PIECHART
3265 if (piechart == 2) {
3266 im->draw_x_grid = 0;
3267 im->draw_y_grid = 0;
3272 /* grid_paint also does the text */
3273 if (!(im->extra_flags & ONLY_GRAPH))
3277 if (!(im->extra_flags & ONLY_GRAPH))
3280 /* the RULES are the last thing to paint ... */
3281 for (i = 0; i < im->gdes_c; i++) {
3283 switch (im->gdes[i].gf) {
3285 if (im->gdes[i].yrule >= im->minval
3286 && im->gdes[i].yrule <= im->maxval)
3287 gfx_new_line(im->canvas,
3288 im->xorigin, ytr(im, im->gdes[i].yrule),
3289 im->xorigin + im->xsize, ytr(im,
3291 1.0, im->gdes[i].col);
3294 if (im->gdes[i].xrule >= im->start
3295 && im->gdes[i].xrule <= im->end)
3296 gfx_new_line(im->canvas,
3297 xtr(im, im->gdes[i].xrule), im->yorigin,
3298 xtr(im, im->gdes[i].xrule),
3299 im->yorigin - im->ysize, 1.0, im->gdes[i].col);
3307 if (strcmp(im->graphfile, "-") == 0) {
3308 fo = im->graphhandle ? im->graphhandle : stdout;
3309 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
3310 /* Change translation mode for stdout to BINARY */
3311 _setmode(_fileno(fo), O_BINARY);
3314 if ((fo = fopen(im->graphfile, "wb")) == NULL) {
3315 rrd_set_error("Opening '%s' for write: %s", im->graphfile,
3316 rrd_strerror(errno));
3320 gfx_render(im->canvas, im->ximg, im->yimg, 0x00000000, fo);
3321 if (strcmp(im->graphfile, "-") != 0)
3327 /*****************************************************
3329 *****************************************************/
3336 if ((im->gdes = (graph_desc_t *) rrd_realloc(im->gdes, (im->gdes_c)
3337 * sizeof(graph_desc_t))) ==
3339 rrd_set_error("realloc graph_descs");
3344 im->gdes[im->gdes_c - 1].step = im->step;
3345 im->gdes[im->gdes_c - 1].step_orig = im->step;
3346 im->gdes[im->gdes_c - 1].stack = 0;
3347 im->gdes[im->gdes_c - 1].linewidth = 0;
3348 im->gdes[im->gdes_c - 1].debug = 0;
3349 im->gdes[im->gdes_c - 1].start = im->start;
3350 im->gdes[im->gdes_c - 1].start_orig = im->start;
3351 im->gdes[im->gdes_c - 1].end = im->end;
3352 im->gdes[im->gdes_c - 1].end_orig = im->end;
3353 im->gdes[im->gdes_c - 1].vname[0] = '\0';
3354 im->gdes[im->gdes_c - 1].data = NULL;
3355 im->gdes[im->gdes_c - 1].ds_namv = NULL;
3356 im->gdes[im->gdes_c - 1].data_first = 0;
3357 im->gdes[im->gdes_c - 1].p_data = NULL;
3358 im->gdes[im->gdes_c - 1].rpnp = NULL;
3359 im->gdes[im->gdes_c - 1].shift = 0;
3360 im->gdes[im->gdes_c - 1].col = 0x0;
3361 im->gdes[im->gdes_c - 1].legend[0] = '\0';
3362 im->gdes[im->gdes_c - 1].format[0] = '\0';
3363 im->gdes[im->gdes_c - 1].strftm = 0;
3364 im->gdes[im->gdes_c - 1].rrd[0] = '\0';
3365 im->gdes[im->gdes_c - 1].ds = -1;
3366 im->gdes[im->gdes_c - 1].cf_reduce = CF_AVERAGE;
3367 im->gdes[im->gdes_c - 1].cf = CF_AVERAGE;
3368 im->gdes[im->gdes_c - 1].p_data = NULL;
3369 im->gdes[im->gdes_c - 1].yrule = DNAN;
3370 im->gdes[im->gdes_c - 1].xrule = 0;
3374 /* copies input untill the first unescaped colon is found
3375 or until input ends. backslashes have to be escaped as well */
3377 const char *const input,
3383 for (inp = 0; inp < len && input[inp] != ':' && input[inp] != '\0'; inp++) {
3384 if (input[inp] == '\\' &&
3385 input[inp + 1] != '\0' &&
3386 (input[inp + 1] == '\\' || input[inp + 1] == ':')) {
3387 output[outp++] = input[++inp];
3389 output[outp++] = input[inp];
3392 output[outp] = '\0';
3396 /* Some surgery done on this function, it became ridiculously big.
3398 ** - initializing now in rrd_graph_init()
3399 ** - options parsing now in rrd_graph_options()
3400 ** - script parsing now in rrd_graph_script()
3414 rrd_graph_init(&im);
3415 im.graphhandle = stream;
3417 rrd_graph_options(argc, argv, &im);
3418 if (rrd_test_error()) {
3423 if (strlen(argv[optind]) >= MAXPATH) {
3424 rrd_set_error("filename (including path) too long");
3428 strncpy(im.graphfile, argv[optind], MAXPATH - 1);
3429 im.graphfile[MAXPATH - 1] = '\0';
3431 rrd_graph_script(argc, argv, &im, 1);
3432 if (rrd_test_error()) {
3437 /* Everything is now read and the actual work can start */
3440 if (graph_paint(&im, prdata) == -1) {
3445 /* The image is generated and needs to be output.
3446 ** Also, if needed, print a line with information about the image.
3457 /* maybe prdata is not allocated yet ... lets do it now */
3458 if ((*prdata = calloc(2, sizeof(char *))) == NULL) {
3459 rrd_set_error("malloc imginfo");
3464 malloc((strlen(im.imginfo) + 200 +
3465 strlen(im.graphfile)) * sizeof(char)))
3467 rrd_set_error("malloc imginfo");
3470 filename = im.graphfile + strlen(im.graphfile);
3471 while (filename > im.graphfile) {
3472 if (*(filename - 1) == '/' || *(filename - 1) == '\\')
3477 sprintf((*prdata)[0], im.imginfo, filename,
3478 (long) (im.canvas->zoom * im.ximg),
3479 (long) (im.canvas->zoom * im.yimg));
3485 void rrd_graph_init(
3493 #ifdef HAVE_SETLOCALE
3494 setlocale(LC_TIME, "");
3495 #ifdef HAVE_MBSTOWCS
3496 setlocale(LC_CTYPE, "");
3502 im->xlab_user.minsec = -1;
3508 im->ylegend[0] = '\0';
3509 im->title[0] = '\0';
3510 im->watermark[0] = '\0';
3513 im->unitsexponent = 9999;
3514 im->unitslength = 6;
3515 im->forceleftspace = 0;
3517 im->viewfactor = 1.0;
3518 im->extra_flags = 0;
3524 im->logarithmic = 0;
3525 im->ygridstep = DNAN;
3526 im->draw_x_grid = 1;
3527 im->draw_y_grid = 1;
3532 im->canvas = gfx_new_canvas();
3533 im->grid_dash_on = 1;
3534 im->grid_dash_off = 1;
3535 im->tabwidth = 40.0;
3537 for (i = 0; i < DIM(graph_col); i++)
3538 im->graph_col[i] = graph_col[i];
3540 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
3543 char rrd_win_default_font[1000];
3545 windir = getenv("windir");
3546 /* %windir% is something like D:\windows or C:\winnt */
3547 if (windir != NULL) {
3548 strncpy(rrd_win_default_font, windir, 500);
3549 rrd_win_default_font[500] = '\0';
3550 strcat(rrd_win_default_font, "\\fonts\\");
3551 strcat(rrd_win_default_font, RRD_DEFAULT_FONT);
3552 for (i = 0; i < DIM(text_prop); i++) {
3553 strncpy(text_prop[i].font, rrd_win_default_font,
3554 sizeof(text_prop[i].font) - 1);
3555 text_prop[i].font[sizeof(text_prop[i].font) - 1] = '\0';
3563 deffont = getenv("RRD_DEFAULT_FONT");
3564 if (deffont != NULL) {
3565 for (i = 0; i < DIM(text_prop); i++) {
3566 strncpy(text_prop[i].font, deffont,
3567 sizeof(text_prop[i].font) - 1);
3568 text_prop[i].font[sizeof(text_prop[i].font) - 1] = '\0';
3572 for (i = 0; i < DIM(text_prop); i++) {
3573 im->text_prop[i].size = text_prop[i].size;
3574 strcpy(im->text_prop[i].font, text_prop[i].font);
3578 void rrd_graph_options(
3584 char *parsetime_error = NULL;
3585 char scan_gtm[12], scan_mtm[12], scan_ltm[12], col_nam[12];
3586 time_t start_tmp = 0, end_tmp = 0;
3588 struct rrd_time_value start_tv, end_tv;
3592 opterr = 0; /* initialize getopt */
3594 parsetime("end-24h", &start_tv);
3595 parsetime("now", &end_tv);
3597 /* defines for long options without a short equivalent. should be bytes,
3598 and may not collide with (the ASCII value of) short options */
3599 #define LONGOPT_UNITS_SI 255
3602 static struct option long_options[] = {
3603 {"start", required_argument, 0, 's'},
3604 {"end", required_argument, 0, 'e'},
3605 {"x-grid", required_argument, 0, 'x'},
3606 {"y-grid", required_argument, 0, 'y'},
3607 {"vertical-label", required_argument, 0, 'v'},
3608 {"width", required_argument, 0, 'w'},
3609 {"height", required_argument, 0, 'h'},
3610 {"full-size-mode", no_argument, 0, 'D'},
3611 {"interlaced", no_argument, 0, 'i'},
3612 {"upper-limit", required_argument, 0, 'u'},
3613 {"lower-limit", required_argument, 0, 'l'},
3614 {"rigid", no_argument, 0, 'r'},
3615 {"base", required_argument, 0, 'b'},
3616 {"logarithmic", no_argument, 0, 'o'},
3617 {"color", required_argument, 0, 'c'},
3618 {"font", required_argument, 0, 'n'},
3619 {"title", required_argument, 0, 't'},
3620 {"imginfo", required_argument, 0, 'f'},
3621 {"imgformat", required_argument, 0, 'a'},
3622 {"lazy", no_argument, 0, 'z'},
3623 {"zoom", required_argument, 0, 'm'},
3624 {"no-legend", no_argument, 0, 'g'},
3625 {"force-rules-legend", no_argument, 0, 'F'},
3626 {"only-graph", no_argument, 0, 'j'},
3627 {"alt-y-grid", no_argument, 0, 'Y'},
3628 {"no-minor", no_argument, 0, 'I'},
3629 {"slope-mode", no_argument, 0, 'E'},
3630 {"alt-autoscale", no_argument, 0, 'A'},
3631 {"alt-autoscale-min", no_argument, 0, 'J'},
3632 {"alt-autoscale-max", no_argument, 0, 'M'},
3633 {"no-gridfit", no_argument, 0, 'N'},
3634 {"units-exponent", required_argument, 0, 'X'},
3635 {"units-length", required_argument, 0, 'L'},
3636 {"units", required_argument, 0, LONGOPT_UNITS_SI},
3637 {"step", required_argument, 0, 'S'},
3638 {"tabwidth", required_argument, 0, 'T'},
3639 {"font-render-mode", required_argument, 0, 'R'},
3640 {"font-smoothing-threshold", required_argument, 0, 'B'},
3641 {"watermark", required_argument, 0, 'W'},
3642 {"alt-y-mrtg", no_argument, 0, 1000}, /* this has no effect it is just here to save old apps from crashing when they use it */
3645 int option_index = 0;
3647 int col_start, col_end;
3649 opt = getopt_long(argc, argv,
3650 "s:e:x:y:v:w:h:D:iu:l:rb:oc:n:m:t:f:a:I:zgjFYAMEX:L:S:T:NR:B:W:",
3651 long_options, &option_index);
3658 im->extra_flags |= NOMINOR;
3661 im->extra_flags |= ALTYGRID;
3664 im->extra_flags |= ALTAUTOSCALE;
3667 im->extra_flags |= ALTAUTOSCALE_MIN;
3670 im->extra_flags |= ALTAUTOSCALE_MAX;
3673 im->extra_flags |= ONLY_GRAPH;
3676 im->extra_flags |= NOLEGEND;
3679 im->extra_flags |= FORCE_RULES_LEGEND;
3681 case LONGOPT_UNITS_SI:
3682 if (im->extra_flags & FORCE_UNITS) {
3683 rrd_set_error("--units can only be used once!");
3686 if (strcmp(optarg, "si") == 0)
3687 im->extra_flags |= FORCE_UNITS_SI;
3689 rrd_set_error("invalid argument for --units: %s", optarg);
3694 im->unitsexponent = atoi(optarg);
3697 im->unitslength = atoi(optarg);
3698 im->forceleftspace = 1;
3701 im->tabwidth = atof(optarg);
3704 im->step = atoi(optarg);
3710 if ((parsetime_error = parsetime(optarg, &start_tv))) {
3711 rrd_set_error("start time: %s", parsetime_error);
3716 if ((parsetime_error = parsetime(optarg, &end_tv))) {
3717 rrd_set_error("end time: %s", parsetime_error);
3722 if (strcmp(optarg, "none") == 0) {
3723 im->draw_x_grid = 0;
3728 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
3730 &im->xlab_user.gridst,
3732 &im->xlab_user.mgridst,
3734 &im->xlab_user.labst,
3735 &im->xlab_user.precis, &stroff) == 7 && stroff != 0) {
3736 strncpy(im->xlab_form, optarg + stroff,
3737 sizeof(im->xlab_form) - 1);
3738 im->xlab_form[sizeof(im->xlab_form) - 1] = '\0';
3739 if ((int) (im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1) {
3740 rrd_set_error("unknown keyword %s", scan_gtm);
3742 } else if ((int) (im->xlab_user.mgridtm = tmt_conv(scan_mtm))
3744 rrd_set_error("unknown keyword %s", scan_mtm);
3746 } else if ((int) (im->xlab_user.labtm = tmt_conv(scan_ltm)) ==
3748 rrd_set_error("unknown keyword %s", scan_ltm);
3751 im->xlab_user.minsec = 1;
3752 im->xlab_user.stst = im->xlab_form;
3754 rrd_set_error("invalid x-grid format");
3760 if (strcmp(optarg, "none") == 0) {
3761 im->draw_y_grid = 0;
3765 if (sscanf(optarg, "%lf:%d", &im->ygridstep, &im->ylabfact) == 2) {
3766 if (im->ygridstep <= 0) {
3767 rrd_set_error("grid step must be > 0");
3769 } else if (im->ylabfact < 1) {
3770 rrd_set_error("label factor must be > 0");
3774 rrd_set_error("invalid y-grid format");
3779 strncpy(im->ylegend, optarg, 150);
3780 im->ylegend[150] = '\0';
3783 im->maxval = atof(optarg);
3786 im->minval = atof(optarg);
3789 im->base = atol(optarg);
3790 if (im->base != 1024 && im->base != 1000) {
3792 ("the only sensible value for base apart from 1000 is 1024");
3797 long_tmp = atol(optarg);
3798 if (long_tmp < 10) {
3799 rrd_set_error("width below 10 pixels");
3802 im->xsize = long_tmp;
3805 long_tmp = atol(optarg);
3806 if (long_tmp < 10) {
3807 rrd_set_error("height below 10 pixels");
3810 im->ysize = long_tmp;
3813 im->extra_flags |= FULL_SIZE_MODE;
3816 im->canvas->interlaced = 1;
3822 im->imginfo = optarg;
3825 if ((int) (im->canvas->imgformat = if_conv(optarg)) == -1) {
3826 rrd_set_error("unsupported graphics format '%s'", optarg);
3838 im->logarithmic = 1;
3842 "%10[A-Z]#%n%8lx%n",
3843 col_nam, &col_start, &color, &col_end) == 2) {
3845 int col_len = col_end - col_start;
3849 color = (((color & 0xF00) * 0x110000) |
3850 ((color & 0x0F0) * 0x011000) |
3851 ((color & 0x00F) * 0x001100) | 0x000000FF);
3854 color = (((color & 0xF000) * 0x11000) |
3855 ((color & 0x0F00) * 0x01100) |
3856 ((color & 0x00F0) * 0x00110) |
3857 ((color & 0x000F) * 0x00011)
3861 color = (color << 8) + 0xff /* shift left by 8 */ ;
3866 rrd_set_error("the color format is #RRGGBB[AA]");
3869 if ((ci = grc_conv(col_nam)) != -1) {
3870 im->graph_col[ci] = color;
3872 rrd_set_error("invalid color name '%s'", col_nam);
3876 rrd_set_error("invalid color def format");
3883 char font[1024] = "";
3885 if (sscanf(optarg, "%10[A-Z]:%lf:%1000s", prop, &size, font) >= 2) {
3886 int sindex, propidx;
3888 if ((sindex = text_prop_conv(prop)) != -1) {
3889 for (propidx = sindex; propidx < TEXT_PROP_LAST;
3892 im->text_prop[propidx].size = size;
3894 if (strlen(font) > 0) {
3895 strcpy(im->text_prop[propidx].font, font);
3897 if (propidx == sindex && sindex != 0)
3901 rrd_set_error("invalid fonttag '%s'", prop);
3905 rrd_set_error("invalid text property format");
3911 im->canvas->zoom = atof(optarg);
3912 if (im->canvas->zoom <= 0.0) {
3913 rrd_set_error("zoom factor must be > 0");
3918 strncpy(im->title, optarg, 150);
3919 im->title[150] = '\0';
3923 if (strcmp(optarg, "normal") == 0)
3924 im->canvas->aa_type = AA_NORMAL;
3925 else if (strcmp(optarg, "light") == 0)
3926 im->canvas->aa_type = AA_LIGHT;
3927 else if (strcmp(optarg, "mono") == 0)
3928 im->canvas->aa_type = AA_NONE;
3930 rrd_set_error("unknown font-render-mode '%s'", optarg);
3936 im->canvas->font_aa_threshold = atof(optarg);
3940 strncpy(im->watermark, optarg, 100);
3941 im->watermark[99] = '\0';
3946 rrd_set_error("unknown option '%c'", optopt);
3948 rrd_set_error("unknown option '%s'", argv[optind - 1]);
3953 if (optind >= argc) {
3954 rrd_set_error("missing filename");
3958 if (im->logarithmic == 1 && im->minval <= 0) {
3960 ("for a logarithmic yaxis you must specify a lower-limit > 0");
3964 if (proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
3965 /* error string is set in parsetime.c */
3969 if (start_tmp < 3600 * 24 * 365 * 10) {
3970 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",
3975 if (end_tmp < start_tmp) {
3976 rrd_set_error("start (%ld) should be less than end (%ld)",
3977 start_tmp, end_tmp);
3981 im->start = start_tmp;
3983 im->step = max((long) im->step, (im->end - im->start) / im->xsize);
3986 int rrd_graph_color(
3993 graph_desc_t *gdp = &im->gdes[im->gdes_c - 1];
3995 color = strstr(var, "#");
3996 if (color == NULL) {
3997 if (optional == 0) {
3998 rrd_set_error("Found no color in %s", err);
4007 rest = strstr(color, ":");
4015 sscanf(color, "#%6lx%n", &col, &n);
4016 col = (col << 8) + 0xff /* shift left by 8 */ ;
4018 rrd_set_error("Color problem in %s", err);
4021 sscanf(color, "#%8lx%n", &col, &n);
4025 rrd_set_error("Color problem in %s", err);
4027 if (rrd_test_error())
4042 while (*ptr != '\0')
4043 if (*ptr++ == '%') {
4045 /* line cannot end with percent char */
4049 /* '%s', '%S' and '%%' are allowed */
4050 if (*ptr == 's' || *ptr == 'S' || *ptr == '%')
4053 /* %c is allowed (but use only with vdef!) */
4054 else if (*ptr == 'c') {
4059 /* or else '% 6.2lf' and such are allowed */
4061 /* optional padding character */
4062 if (*ptr == ' ' || *ptr == '+' || *ptr == '-')
4065 /* This should take care of 'm.n' with all three optional */
4066 while (*ptr >= '0' && *ptr <= '9')
4070 while (*ptr >= '0' && *ptr <= '9')
4073 /* Either 'le', 'lf' or 'lg' must follow here */
4076 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g')
4091 struct graph_desc_t *gdes;
4092 const char *const str;
4094 /* A VDEF currently is either "func" or "param,func"
4095 * so the parsing is rather simple. Change if needed.
4102 sscanf(str, "%le,%29[A-Z]%n", ¶m, func, &n);
4103 if (n == (int) strlen(str)) { /* matched */
4107 sscanf(str, "%29[A-Z]%n", func, &n);
4108 if (n == (int) strlen(str)) { /* matched */
4111 rrd_set_error("Unknown function string '%s' in VDEF '%s'", str,
4116 if (!strcmp("PERCENT", func))
4117 gdes->vf.op = VDEF_PERCENT;
4118 else if (!strcmp("MAXIMUM", func))
4119 gdes->vf.op = VDEF_MAXIMUM;
4120 else if (!strcmp("AVERAGE", func))
4121 gdes->vf.op = VDEF_AVERAGE;
4122 else if (!strcmp("MINIMUM", func))
4123 gdes->vf.op = VDEF_MINIMUM;
4124 else if (!strcmp("TOTAL", func))
4125 gdes->vf.op = VDEF_TOTAL;
4126 else if (!strcmp("FIRST", func))
4127 gdes->vf.op = VDEF_FIRST;
4128 else if (!strcmp("LAST", func))
4129 gdes->vf.op = VDEF_LAST;
4130 else if (!strcmp("LSLSLOPE", func))
4131 gdes->vf.op = VDEF_LSLSLOPE;
4132 else if (!strcmp("LSLINT", func))
4133 gdes->vf.op = VDEF_LSLINT;
4134 else if (!strcmp("LSLCORREL", func))
4135 gdes->vf.op = VDEF_LSLCORREL;
4137 rrd_set_error("Unknown function '%s' in VDEF '%s'\n", func,
4142 switch (gdes->vf.op) {
4144 if (isnan(param)) { /* no parameter given */
4145 rrd_set_error("Function '%s' needs parameter in VDEF '%s'\n",
4149 if (param >= 0.0 && param <= 100.0) {
4150 gdes->vf.param = param;
4151 gdes->vf.val = DNAN; /* undefined */
4152 gdes->vf.when = 0; /* undefined */
4154 rrd_set_error("Parameter '%f' out of range in VDEF '%s'\n", param,
4167 case VDEF_LSLCORREL:
4169 gdes->vf.param = DNAN;
4170 gdes->vf.val = DNAN;
4173 rrd_set_error("Function '%s' needs no parameter in VDEF '%s'\n",
4189 graph_desc_t *src, *dst;
4193 dst = &im->gdes[gdi];
4194 src = &im->gdes[dst->vidx];
4195 data = src->data + src->ds;
4196 steps = (src->end - src->start) / src->step;
4199 printf("DEBUG: start == %lu, end == %lu, %lu steps\n", src->start,
4203 switch (dst->vf.op) {
4209 if ((array = malloc(steps * sizeof(double))) == NULL) {
4210 rrd_set_error("malloc VDEV_PERCENT");
4213 for (step = 0; step < steps; step++) {
4214 array[step] = data[step * src->ds_cnt];
4216 qsort(array, step, sizeof(double), vdef_percent_compar);
4218 field = (steps - 1) * dst->vf.param / 100;
4219 dst->vf.val = array[field];
4220 dst->vf.when = 0; /* no time component */
4223 for (step = 0; step < steps; step++)
4224 printf("DEBUG: %3li:%10.2f %c\n", step, array[step],
4225 step == field ? '*' : ' ');
4231 while (step != steps && isnan(data[step * src->ds_cnt]))
4233 if (step == steps) {
4237 dst->vf.val = data[step * src->ds_cnt];
4238 dst->vf.when = src->start + (step + 1) * src->step;
4240 while (step != steps) {
4241 if (finite(data[step * src->ds_cnt])) {
4242 if (data[step * src->ds_cnt] > dst->vf.val) {
4243 dst->vf.val = data[step * src->ds_cnt];
4244 dst->vf.when = src->start + (step + 1) * src->step;
4255 for (step = 0; step < steps; step++) {
4256 if (finite(data[step * src->ds_cnt])) {
4257 sum += data[step * src->ds_cnt];
4262 if (dst->vf.op == VDEF_TOTAL) {
4263 dst->vf.val = sum * src->step;
4264 dst->vf.when = 0; /* no time component */
4266 dst->vf.val = sum / cnt;
4267 dst->vf.when = 0; /* no time component */
4277 while (step != steps && isnan(data[step * src->ds_cnt]))
4279 if (step == steps) {
4283 dst->vf.val = data[step * src->ds_cnt];
4284 dst->vf.when = src->start + (step + 1) * src->step;
4286 while (step != steps) {
4287 if (finite(data[step * src->ds_cnt])) {
4288 if (data[step * src->ds_cnt] < dst->vf.val) {
4289 dst->vf.val = data[step * src->ds_cnt];
4290 dst->vf.when = src->start + (step + 1) * src->step;
4297 /* The time value returned here is one step before the
4298 * actual time value. This is the start of the first
4302 while (step != steps && isnan(data[step * src->ds_cnt]))
4304 if (step == steps) { /* all entries were NaN */
4308 dst->vf.val = data[step * src->ds_cnt];
4309 dst->vf.when = src->start + step * src->step;
4313 /* The time value returned here is the
4314 * actual time value. This is the end of the last
4318 while (step >= 0 && isnan(data[step * src->ds_cnt]))
4320 if (step < 0) { /* all entries were NaN */
4324 dst->vf.val = data[step * src->ds_cnt];
4325 dst->vf.when = src->start + (step + 1) * src->step;
4330 case VDEF_LSLCORREL:{
4331 /* Bestfit line by linear least squares method */
4334 double SUMx, SUMy, SUMxy, SUMxx, SUMyy, slope, y_intercept, correl;
4342 for (step = 0; step < steps; step++) {
4343 if (finite(data[step * src->ds_cnt])) {
4346 SUMxx += step * step;
4347 SUMxy += step * data[step * src->ds_cnt];
4348 SUMy += data[step * src->ds_cnt];
4349 SUMyy += data[step * src->ds_cnt] * data[step * src->ds_cnt];
4353 slope = (SUMx * SUMy - cnt * SUMxy) / (SUMx * SUMx - cnt * SUMxx);
4354 y_intercept = (SUMy - slope * SUMx) / cnt;
4357 (SUMx * SUMy) / cnt) / sqrt((SUMxx -
4358 (SUMx * SUMx) / cnt) * (SUMyy -
4364 if (dst->vf.op == VDEF_LSLSLOPE) {
4365 dst->vf.val = slope;
4367 } else if (dst->vf.op == VDEF_LSLINT) {
4368 dst->vf.val = y_intercept;
4370 } else if (dst->vf.op == VDEF_LSLCORREL) {
4371 dst->vf.val = correl;
4385 /* NaN < -INF < finite_values < INF */
4386 int vdef_percent_compar(
4391 /* Equality is not returned; this doesn't hurt except
4392 * (maybe) for a little performance.
4395 /* First catch NaN values. They are smallest */
4396 if (isnan(*(double *) a))
4398 if (isnan(*(double *) b))
4401 /* NaN doesn't reach this part so INF and -INF are extremes.
4402 * The sign from isinf() is compatible with the sign we return
4404 if (isinf(*(double *) a))
4405 return isinf(*(double *) a);
4406 if (isinf(*(double *) b))
4407 return isinf(*(double *) b);
4409 /* If we reach this, both values must be finite */
4410 if (*(double *) a < *(double *) b)