h = gca; delete(h); h==gca -> ans=1

[Ben Abbott]

On Oct 22, 2008, at 2:59 PM, John W. Eaton wrote:

> On 22-Oct-2008, Ben Abbott wrote:
>
> | While this could be fixed in gca.m I'm sure it is better to take  
> care of it at a lower level.
> |
> | octave:102> plot(1:10)
> | octave:103> gca
> | ans = -21.032
> | octave:104> delete(gca)
> | octave:105> gca
> | ans = -21.032
>
> I think the following changeset fixes this problem.
>
> Thanks,
>
> jwe

Thanks, that works.

However,

	octave:8> h = gcf; delete(h); h==gcf
	ans = 1

I also noticed in Matlab

	>> gco
	ans =  []

but in Octave

	octave:9> gco
	error: `gco' undefined near line 9 column 1

I have no c++ skill, but I'll go out on a limb and ask if gca() &  
gcf() might be cast as special instances of gco()?

Sorry I didn't mention any of this earlier, but I didn't think about  
these parallels until my drive home from work.

Ben