automated (or otherwise) tests for graphics code?

[Ben Abbott]

On Oct 18, 2008, at 7:32 PM, Ben Abbott wrote:

>
> On Oct 16, 2008, at 1:45 PM, John W. Eaton wrote:
>
>> rundemos plot
>
> I'm late to taking advantage of the automated demos. Running the  
> current developers sources I encounter failures and eventually  
> errors when ...
>
> 	clear all
> 	close all
> 	more off
> 	rundemos
>
> The problems begin with quiver. I wrote a short script to run the  
> demos for those files with had problems. See below ...
>
> 	clear all
> 	close all
> 	more off
> 	demo quiver
> 	demo quiver3
> 	demo refreshdata
> 	demo ribbon
> 	demo rose
> 	demo scatter
> 	demo scatter3
> 	demo shading
> 	demo surfnorm
>
> Surpisingly for me there were no problems with this little script.
>
> I've attached the output for "rundemos plot".
>
> I'd appreciate if someone else can verify the results I've  
> encountered.

Looking again, it occured to me that plotyy is responsible (which  
precedes quiver). Remove plotyy only two files have problems, ribbon.m  
and surfnorm.m

I'm unable to duplicate either failure manually.

Ben