# HG changeset patch
# User Francesco Potortì <pot@gnu.org>
# Date 1231754090 -3600
# Node ID e4446f9ba0e121847af36e4611a35d51640bdb18
# Parent  1d237a82e3932aa51cf423729c18e07f39867041
help and error string corrected in hist.m.

diff --git a/scripts/ChangeLog b/scripts/ChangeLog
--- a/scripts/ChangeLog
+++ b/scripts/ChangeLog
@@ -1,3 +1,8 @@
+2008-12-26  Francesco Potortì  <pot@gnu.org>
+
+	* plot/hist.m: Doc string now mentions matrix input argument.
+	Correct error message.
+
 2008-10-21  Ben Abbott <bpabbott@mac.com>
 
 	* plot/clf.m: Improve Matlab compatibility.
diff --git a/scripts/plot/hist.m b/scripts/plot/hist.m
--- a/scripts/plot/hist.m
+++ b/scripts/plot/hist.m
@@ -23,7 +23,8 @@
 ##
 ## With one vector input argument, plot a histogram of the values with
 ## 10 bins.  The range of the histogram bins is determined by the range
-## of the data.
+## of the data.  With one matrix input argument, plot a hystogram where
+## each bin contains a bar per input column.
 ##
 ## Given a second scalar argument, use that as the number of bins.
 ##
@@ -59,7 +60,7 @@
     max_val = max (y(:));
     min_val = min (y(:));
   else
-    error ("hist: first argument must be a vector");
+    error ("hist: first argument must be real valued");
   endif
 
   iarg = 1;