trouble with plotyy

[John W. Eaton]

On 16-Feb-2009, Ben Abbott wrote:

| On Mac OSX, and using Aquaterm, "rundemos plot" eventually fills my  
| screen with windows. I much prefer the way x11 works (i.e. close(hfig)  
| actually closes the window, with aquaterm it remains visible, but not  
| longer connected to gnuplot/octave).
| 
| To relieve my minor frustration I greped the plot directory for files  
| containing "%! close" and them replace "close" or "close all" with  
| "clf". The result was a non-functional demo.
| 
| I've simplified the problem to a clf followee by a plotyy.
| 
| clf
| x = 0:0.1:2*pi;
| y1 = sin (x);
| y2 = exp (x - 1);
| ax = plotyy (x, y1, x - 1, y2)
| 
| which produces the error ...
| 
| error: A(I): Index exceeds matrix dimension.
| error: called from:
| error:   /Users/bpabbott/Development/Octave_Toolbox/demos/plotyy.m at  
| line 130, column 3
| error:   /Users/bpabbott/Development/Octave_Toolbox/demos/plotyy.m at  
| line 104, column 7
| 
| The relevant part of ployy is below.
| 
|   98   oldh = gca ();
|   99   unwind_protect
| 100     [ax, h1, h2] = __plotyy__ (ax, varargin{:});
| 101   unwind_protect_cleanup
| 102     ## Only change back to the old axis if we didn't delete it
| 103     if (ishandle(oldh) && strcmp (get (oldh, "type"), "axes"))
| 104       axes (oldh);
| 105     endif
| 106   end_unwind_protect
| 
| I don't see anything to be concerned with here. Can someone verify  
| they see this as well?
| 
| BTW, my sources are only a few hours old, and I did verify that my  
| change to the plotyy is unrelated to this feature.

I checked in the following change.

  http://hg.savannah.gnu.org/hgweb/octave/rev/a186c5b4f264

Thanks,

jwe