want to display B<bits> per second. This is what the B<L<data
calculation|rrdgraph_data/CDEF>> command is designed for. After
B<consolidating> the data, a copy is made and this copy is modified
-using a rather powerful B<L<RPN|rrdgraph_rpn/>> command set.
+using a rather powerful B<L<RPN|rrdgraph_rpn>> command set.
When you are done fetching and processing the data, it is time to
graph it (or print it). This ends the B<rrdtool graph> sequence.
B<RRA> the data should come from. Defaults are: 1 day ago until
now, with the best possible resolution. B<Start> and B<end> can
be specified in several formats, see
-L<AT-STYLE TIME SPECIFICATION|rrdfetch/> and L<rrdgraph_examples>.
+L<AT-STYLE TIME SPECIFICATION|rrdfetch> and L<rrdgraph_examples>.
By default, B<rrdtool graph> calculates the width of one pixel in
the time domain and tries to get data from an B<RRA> with that
resolution. With the B<step> option you can alter this behaviour.
All text in rrdtool is rendered using Pango. With the B<--pango-markup> option, all
text will be processed by pango markup. This allows to embed some simple html
like markup tags using
-
+
<span key="value">text</span>
Apart from the verbose syntax, there are also the following short tags available.
small Makes font relatively smaller, equivalent to <span size="smaller">
tt Monospace font
u Underline
-
+
More details on L<http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html>.
[B<-G>|B<--graph-render-mode> {B<normal>,B<mono>}]
other statements are useful but optional.
See L<rrdgraph_data> and L<rrdgraph_rpn> for the exact format.
-=head2 Graph and print elements
+NOTE: B<Graph and print elements>
You need at least one graph element to generate an image and/or
at least one print statement to generate a report.
See L<rrdgraph_graph> for the exact format.
-
-=back
-
=head2 graphv
Calling rrdtool with the graphv option will return information in the
order to make B<RRDtool> work it is important to note that
B<RRDtool> can be remotely controlled through a set of pipes. This
saves a considerable amount of startup time when you plan to make
-B<RRDtool> do a lot of things quickly. Check the section on L<"Remote
-Control"> further down. There is also a number of language bindings
+B<RRDtool> do a lot of things quickly. Check the section on L<Remote_Control>
+further down. There is also a number of language bindings
for RRDtool which allow you to use it directly from perl, python, tcl,
php, etc.