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diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod
index 06bf6793e3b81e028a2f8a61e20c5d4c14742711..091940341409fb0b38a451a5bdfd0b465f911946 100644 (file)
--- a/doc/rrdgraph.pod
+++ b/doc/rrdgraph.pod
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.
-=head1 OPTIONS
-
+Use B<graphv> instead of B<graph> to get detailed information about the
+graph geometry and data once it is drawn. See the bottom of the document for
+more information.
-=head2 B<graphv>
+=head1 OPTIONS
-This alternate version of B<graph> takes the same arguments and performs the
-same function. The I<v> stands for I<verbose>, which describes the output
-returned. B<graphv> will return a lot of information about the graph using
-the same format as rrdtool info (key = value). See the bottom of the document for more information.
=head2 I<filename>
A horizontal string at the top of the graph and/or a vertically
placed string at the left hand side of the graph.
-=head2 Right Axis
-
-[B<--right-axis> I<scale>B<:>I<shift>]
-[B<--right-axis-label> I<label>]
-
-A second axis will be drawn to the right of the graph. It is tied to the
-left axis via the scale and shift parameters. You can also define a label
-for the right axis.
-
-[B<--right-axis-format> I<format-string>]
-
-By default the format of the axis lables gets determined automatically. If
-you want todo this your self, use this option with the same %lf arguments
-you know from the PRING and GPRINT commands.
=head2 Size
Gridfitting is turned off for PDF, EPS, SVG output by default.
-=head2 Grid
-
-=over
-
-=item X-Axis
+=head2 X-Axis
[B<-x>|B<--x-grid> I<GTM>B<:>I<GST>B<:>I<MTM>B<:>I<MST>B<:>I<LTM>B<:>I<LST>B<:>I<LPR>B<:>I<LFM>]
each day. The labels are placed exactly between two major grid lines
as they specify the complete day and not just midnight.
-=item Y-Axis
+=head2 Y-Axis
[B<-y>|B<--y-grid> I<grid step>B<:>I<label factor>]
How many digits should rrdtool assume the y-axis labels to be? You
may have to use this option to make enough space once you start
-fideling with the y-axis labeling.
+fiddling with the y-axis labeling.
[B<--units=si>]
the appropriate units (k, M, etc.) instead of using exponential notation.
Note that for linear graphs, SI notation is used by default.
-=back
+=head2 Right Y Axis
+
+[B<--right-axis> I<scale>B<:>I<shift>]
+[B<--right-axis-label> I<label>]
+
+A second axis will be drawn to the right of the graph. It is tied to the
+left axis via the scale and shift parameters. You can also define a label
+for the right axis.
+
+[B<--right-axis-format> I<format-string>]
+
+By default the format of the axis lables gets determined automatically. If
+you want todo this your self, use this option with the same %lf arguments
+you know from the PRING and GPRINT commands.
+
+=head2 Legend
+
+[B<-g>|B<--no-legend>]
+
+Suppress generation of the legend; only render the graph.
+
+[B<-F>|B<--force-rules-legend>]
+
+Force the generation of HRULE and VRULE legends even if those HRULE or
+VRULE will not be drawn because out of graph boundaries (mimics
+behaviour of pre 1.0.42 versions).
+
+[B<--legend-position>=(north|south|west|east)]
+
+Place the legend at the given side of the graph. The default is south.
+In west or east position it is necessary to add line breaks manually.
+
+[B<--legend-direction>=(topdown|bottomup)]
+
+Place the legend items in the given vertical order. The default is topdown.
+Using bottomup the legend items appear in the same vertical order as a
+stack of lines or areas.
=head2 Miscellaneous
lazy in this regard has seen several changes over time. The only thing you
can realy rely on before rrdtool 1.3.7 is that lazy will not generate the
graph when it is already there and up to date, and also that it will output
-the size of the graph.
+the size of the graph.
+
+[B<--daemon> I<address>]
+Address of the L<rrdcached> daemon. If specified, a C<flush> command is sent
+to the server before reading the RRD files. This allows the graph to contain
+fresh data even if the daemon is configured to cache values for a long time.
+For a list of accepted formats, see the B<-l> option in the L<rrdcached> manual.
+
+ rrdtool graph [...] --daemon unix:/var/run/rrdcached.sock [...]
[B<-f>|B<--imginfo> I<printfstr>]
If images are interlaced they become visible on browsers more quickly.
-[B<-g>|B<--no-legend>]
-
-Suppress generation of the legend; only render the graph.
-
-[B<-F>|B<--force-rules-legend>]
-
-Force the generation of HRULE and VRULE legends even if those HRULE or
-VRULE will not be drawn because out of graph boundaries (mimics
-behaviour of pre 1.0.42 versions).
-
[B<-T>|B<--tabwidth> I<value>]
By default the tab-width is 40 pixels, use this option to change it.
Especially the 'graph_*' keys are new. They help applications that want to
know what is where on the graph.
+=head1 ENVIRONMENT VARIABLES
+
+The following environment variables may be used to change the behavior of
+C<rrdtoolE<nbsp>graph>:
+
+=over 4
+
+=item B<RRDCACHED_ADDRESS>
+
+If this environment variable is set it will have the same effect as specifying
+the C<--daemon> option on the command line. If both are present, the command
+line argument takes precedence.
+
+=back
+
=head1 SEE ALSO
L<rrdgraph> gives an overview of how B<rrdtool graph> works.