X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=doc%2Frrdgraph_rpn.pod;h=3718349cdbba42e80e991fb461511675cf18b48c;hb=8b01cbe023a7c412f1131013840ed078fdb6e65c;hp=cf62c0800b918466f7e802dd4f8b0fd00184974a;hpb=5b16d46cb37b99d50005603382c7b0fa11ff4347;p=rrdtool.git

diff --git a/doc/rrdgraph_rpn.pod b/doc/rrdgraph_rpn.pod
index cf62c08..3718349 100644
--- a/doc/rrdgraph_rpn.pod
+++ b/doc/rrdgraph_rpn.pod
@@ -257,6 +257,12 @@ the first occurrence of that value in the time component.
 
 Example: C<VDEF:avg=mydata,AVERAGE>
 
+=item STDEV
+
+Returns the standard deviation of the values.
+
+Example: C<VDEF:stdev=mydata,STDEV>
+
 =item LAST, FIRST
 
 Return the last/first value including its time.  The time for