switch for rrd_graph to specify the outer-size of the graph and not just the

[rrdtool.git] / doc / rrdgraph.pod

diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod
index 59d3ac4..c451f06 100644 (file)
--- a/doc/rrdgraph.pod
+++ b/doc/rrdgraph.pod
@@ -91,10 +91,15 @@ placed string at the left hand side of the graph.
 [B<-w>|B<--width> I<pixels>]
 [B<-h>|B<--height> I<pixels>]
 [B<-j>|B<--only-graph>]
+[B<-D>|B<--full-size-mode>]
 
-The width and height of the B<canvas> (the part of the graph with
+By default, the width and height of the B<canvas> (the part with
 the actual data and such). This defaults to 400 pixels by 100 pixels.
 
+If you specify the B<--full-size-mode> option, the width and height
+specify the final dimensions of the output image and the canvas
+is automatically resized to fit.
+
 If you specify the B<--only-graph> option and set the height E<lt> 32
 pixels you will get a tiny graph image (thumbnail) to use as an icon
 for use in an overview, for example. All labeling will be stripped off
@@ -123,6 +128,14 @@ maximum y-axis from the actual minimum and maximum data values. Our example
 would display slightly less than C<260-0.001> to slightly more than
 C<260+0.001> (this feature was contributed by Sasha Mikheev).
 
+[B<-J>|B<--alt-autoscale-min>]
+
+Where C<--alt-autoscale> will modify both the absolute maximum AND minimum
+values, this option will only affect the minimum value. The maximum
+value, if not defined on the command line, will be 0. This option can
+be useful when graphing router traffic when the WAN line uses compression,
+and thus the throughput may be higher than the WAN line speed.
+
 [B<-M>|B<--alt-autoscale-max>]
 
 Where C<--alt-autoscale> will modify both the absolute maximum AND minimum