Thread Subject: How to save figure with large resolution with command

I use this:

%%%%%%%%%%%%%%%%
frame = getframe(gca);
fig = frame2im(frame);
imwrite(fig,a.png);
%%%%%%%%%%%%%%%%

But the image "a.png" have a fixed size, the visualised data in figure has been shrinked(Warning: Image is too big to fit on screen; displaying at 30%). I want to save the full size image in figure(in which has some annotation ie. ' text') in a file, any one know how to make it?

Thanks ~~

"timedcy Asayaku" <timedcy@163.com> wrote in message <h3pema$9h$1@fred.mathworks.com>...
> I use this:
>
> %%%%%%%%%%%%%%%%
> frame = getframe(gca);
> fig = frame2im(frame);
> imwrite(fig,a.png);
> %%%%%%%%%%%%%%%%
>
> But the image "a.png" have a fixed size, the visualised data in figure has been shrinked(Warning: Image is too big to fit on screen; displaying at 30%). I want to save the full size image in figure(in which has some annotation ie. ' text') in a file, any one know how to make it?
>
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For some bizarre reason, this most common question is not in the FAQ.
However, one of the latest threads with possible solutions is here
http://groups.google.com/group/comp.soft-sys.matlab/browse_thread/thread/761e2de818577adb/61fdbbf0521e557e?hl=en#61fdbbf0521e557e