-2001/03/10 Jake Brutlag <jakeb@corp.webtv.net>
- Support for COMPUTE data sources (CDEF data sources). Removes the RPN
- parser and calculator from rrd_graph and puts then in a new file,
- rrd_rpncalc.c. Changes to core files rrd_create and rrd_update. Some
- clean-up of aberrant behavior stuff, including a bug fix.
- Documentation update (rrdcreate.pod, rrdupdate.pod). Change xml format.
+Graphing (Tobi Oetiker)
+--------
+* libart has been replaced by cairo/pango
+* pango markup is supported
+* full gridfitting
+* --graph-render-mode=mono for non antialiased graphing
+* --font-render-mode=mono for non antialiased fonts
+* fonts come through fontconfig, use the Pango fontnameing
+ scheme -> 'Times 20' ... it is not possible to use
+ truetype fonts directly anymore.
+* Tabs are position independent.
+* TRENDNAN filter that ignores NAN values while caculating the TREND data. (Timo Stripf)
+* --full-size-mode to specify the outer border of the image and not just of the graphing canvas (Matthew Chambers)
+* TEXTALIGN command to alter default text alignment behaviour
+* C API in-memory graphing with rrd_graph_v (Evan Miller)
+* draw dashed lines in graphs (Thomas Gutzler)
+* new interface graphv which returns inforamation useing the rrd_info
+ interface (Tobi Oetiker and Mark Plaksin)
+
+Forecasting (Evan Miller)
+-----------
+* the new MHWPREDICT consolidation function uses a variation of the Holt-Winters
+ method. It is a drop-in replacement for HWPREDICT, and is better suited for
+ data whose seasonal variations grow or shrink in proportion to the average.
+
+Rewrites
+--------
+* rrd_restore now uses libxml for parsing which makes things much more
+ tolerant towards xml variations. The old code could mostly just parse the
+ xml as it was output by rrd_dump (by Florian octo Forster)
+
+* rrd_update rewritten to make it more modular. Fixed two longstanding
+ HW bugs in the process (Evan Miller)
+
+Misc
+----
+* ruby rrd_fetch will return step as a last property -- Mike Perham
+
+Incompatibility
+---------------
+* If you create an RRD with the new MHWPREDICT function, the resulting rrdfile will
+ be version 0004 and can only be used in rrdtool 1.3.
+
+Locale Independent Input
+------------------------
+* Regardles of locale you are in, rrdtool always expects input to be numbers (LC_NUMERIC)
+ in C or POSIX locale for numbers. (not 1,1 but 1.1) this is necessary to make
+ things like RPN work as it uses , as a separator.
+
+RRDTOOL NEWS
+============
+Major Changes between 1.0.x and 1.2.x
+
+Graphing
+--------
+
+* rewritten graphics generation based on libart.
+ - anti-aliased output
+ - alpha transparency support
+ - truetype fonts