Update some plot %!demos so that they run under Matlab. * datetick.m: Explicitly name 'x' axis in call to datetick. * mesh.m: Use try/catch around block checking __graphics_toolkit__ which is an Octave-only figure property. * patch.m: Call patch with X,Y,C rather than X,Y,PROP,VAL which is not supported by Matlab. * ezplot3: Use explicit call to legend, rather than ';legend;' in ezplot3 call which is Octave-only syntax. * rose.m: Add a demo that Matlab can run. Matlab won't run the second demo which uses Octave-only syntax. * copyobj.m: Don't use errorbar plot style argument which is Octave-only syntax.

--- a/scripts/plot/draw/patch.m
+++ b/scripts/plot/draw/patch.m
@@ -235,7 +235,7 @@
 %! colormap (jet (64));
 %! x = [ 0 0; 1 1; 1 0 ];
 %! y = [ 0 0; 0 1; 1 1 ];
-%! p = patch (x, y, 'facecolor', 'b');
+%! p = patch (x, y, 'b');
 %! set (p, 'cdatamapping', 'direct', 'facecolor', 'flat', 'cdata', [1 32]);
 %! title ('Direct mapping of colors: Light-Green UL and Blue LR triangles');