trouble with plotyy

[Ben Abbott]

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.

Ben