diff -r d4565e812948 scripts/plot/plot3.m
--- a/scripts/plot/plot3.m	Wed May 21 22:27:07 2008 +0200
+++ b/scripts/plot/plot3.m	Sun Jun 01 14:05:02 2008 +0200
@@ -269,9 +269,9 @@
 	y = y(:);
 	z = z(:);
       elseif (length (x) == rows (z) && length (y) == columns (z))
+	[x, y] = meshgrid (x, y);
+      else
 	error ("plot3: [length(x), length(y)] must match size(z)");
-      else
-	[x, y] = meshgrid (x, y);
       endif
     endif