Index: control/util/axis2dlim.m
===================================================================
RCS file: /cvs/octave/scripts/control/util/axis2dlim.m,v
retrieving revision 1.9
diff -u -p -r1.9 axis2dlim.m
--- control/util/axis2dlim.m	12 Oct 2007 21:27:19 -0000	1.9
+++ control/util/axis2dlim.m	5 Nov 2007 02:12:25 -0000
@@ -39,6 +39,10 @@
 
 function axvec = axis2dlim (axdata)
 
+  if ( nargin < 1 )
+     axdata = 0;
+  end
+
   if(isempty(axdata))
     axdata = 0;
   endif