Thread Subject: saveas with exact figure dimensions?

When I use
saveas(gcf, filename.pdf)

it produces a pdf with the figure centered on a 8.5x11 paper.

I have seen these
set(gcf, 'papersize', [width height]);
set(gcf, 'paperposition', [left bottom width height]);

but do you really have to set these manually? It seems like the default should be to save only the image - is there an option I'm not seeing to save only the image with no giant white border?

also, what is the difference between

print('-dpdf', filename);

and

saveas(gcf, filename.pdf)

?

Thanks,
Dave

I found this:

http://www.mathworks.fr/matlabcentral/fileexchange/loadFile.do?objectId=16179&objectType=file

it pretty much does the trick.

Dave