matrix size for plotting ?

[Christoph Ellenberger]

Hello,
I observe the following and wanted to know if this is intended or how can I 
circumvent my problem (eg increasing memory).

I have relativey large Matrices I want to plot, and depending on backend I use 
I get either a plot, a crash or an exhausted memory message. I also run several 
flavors of octave on a Windows XP (3.2.4, 3.6.0 minGW and 3.6.1 VS2010) 

As example I run something like
A = rand(256,2^X);
figure;pcolor(A),shading interp, colormap gray
or
figure;imagesc(A),shading interp, colormap gray

QtHandles and fltk crash for imagesc already for X>=14, while gnuplot crashes 
for X>=16. For pcolor I can't observe a crash but a  memory exhaust message for 
X>=17.

I would expect the warning at some specific size and no crash (always bad).
My 2 questions: 
- How can I improve that behavior ?
- should I file a bug report ? 

thanks in advance
christoph 


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