[Octave-bug-tracker] [bug #37913] subplot with copyobj inconsistent

[Pantxo Diribarne]

Follow-up Comment #4, bug #37913 (project octave):

I have added a listener to position and ztick properties to see how much times
they are modified after the axes has been created.

diff -r 06832c90ae7d scripts/plot/struct2hdl.m
--- a/scripts/plot/struct2hdl.m Fri Dec 14 16:03:50 2012 -0800
+++ b/scripts/plot/struct2hdl.m Sat Dec 15 14:34:56 2012 +0100
@@ -172,7 +172,10 @@
       endif
     endfor
     h = axes (propval{:}, "parent", par);
-
+    disp ("add listener to position and ztick property")
+    markchanged = @(h, foobar, name) set (h, "userdata", [get(h,"userdata");
{name}]);
+    addlistener (h, "position", {markchanged, "position"})
+    addlistener (h, "ztick", {markchanged, "ztick"})
     if (isfield (s.properties, "__plotyy_axes__"))
       plty = s.properties.__plotyy_axes__;
       addproperty ("__plotyy_axes__", h, "any");



If I run the example below I can see that in gnuplot ztick is modified once,
as expected, but position is never modified. In fltk ztick is also modifed
once but position is modifed 15 times.


close all
graphics_toolkit gnuplot;
ax1 = subplot (1, 1, 1);
ax2 = copyobj (ax1, gcf);
disp ("gnuplot")
nztick = length (find (strcmp (get (ax2, "userdata"), "ztick")))
npos = length (find (strcmp (get (ax2, "userdata"), "position")))
close all
graphics_toolkit fltk;
ax1 = subplot (1, 1, 1);
ax2 = copyobj (ax1, gcf);
disp ("fltk")
nztick = length (find (strcmp (get (ax2, "userdata"), "ztick")))
npos = length (find (strcmp (get (ax2, "userdata"), "position")))


Wild guess:  in gnuplot position is updated only if the requested value is
different from the current one? 

  

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