Re: new subplot bug

[Ben Abbott]

On Wednesday, February 18, 2009, at 11:59AM, "John W. Eaton" <address@hidden> 
wrote:
>On 18-Feb-2009, Ben Abbott wrote:
>
>| I found a few errors in my prior changeset.
>| 
>|      http://hg.savannah.gnu.org/hgweb/octave/rev/4142982c66c6
>| 
>| The most severe were not offsetting the outerposition from the postion  
>| property, and calculating the lower/bottom inset correctly.
>| 
>| There are some surprises with the proprietary solution. First, the  
>| outerposition properties for subplot with more than 4 rows overlap. In  
>| Octave's implementation this results in new subplots deleting  
>| neighboring ones.
>| 
>| I fixed that by trigger deletion when the position properties overlap.
>| 
>| A second surprise is the interaction of Matlab's parser and the  
>| subplot command. See the example below.
>| 
>|  >> subplot(1,5,1);get(gca,'position')
>| ans =     0.13         0.11      0.12374        0.815
>| 
>|  >> subplot(1,5,1);
>|  >> get(gca,'position')
>| ans =     0.13         0.11      0.12132        0.815
>| 
>| I characterized the proprietary behavior using scripts. Thus, it  
>| presently respects the first example. I verified the propriety  
>| behavior for Matlab 2007b as well as for 2008b. I'd prefer we not try  
>| to duplicate this behavior.
>| 
>| As I already missed several errors, please check this over. If it is  
>| ok, please push (I won't be able to until later).
>
>OK, this seems to improve things, so I checked it in.
>
>Now, here is another problem that I have no idea about.  Try running
>
>  x = -10:0.1:10;
>  for i = 1:2; subplot (2, 1, i); pause; plot (x, sin(x)); endfor
>
>At the first pause, I see the empty top axes.
>
>At the second pause, both axes are visible and empty.  I would expect
>the first one to have a sine wave plot.

At the second pause, I see the sin in the first.

>After the loop completes, There is a third axes object that overlaps
>both subplots and has a single sine wave plot (see the attached image).

I don't see the third axes. After the last pause, I get the expected result.

>Any clues about this one?
>
>Thanks,
>
>jwe

I haven't built since yesterday.

I'll do so now and see if I can duplicate what you see.

Ben