Saving a really large image

Hi
I am building a pattern which is a few feet x few feet in
dimension. I can create a large image but ofcourse, when i
try to save the large image through matlab i have memory
issues...

let me use this small psuedo code to explain my question:

THIS IS WHAT I DO NOW

for i = 1: 100
a= Create a small pattern(i);
imwrite (a, 'Piece-(i).bmp')
end

and then I take the Pieces- (1 to 1 100).bmp and stitch them
with irfanview

THIS IS WHAT I AM WONDERING IF CAN BE DONE
dummy=zeros(100,100000);
imwrite(dummy,'dummy.bmp')

for i = 1: 100
a= Create a small pattern(i);
imAPPEND (a, 'dummy.bmp')
end

There is no image append comment..but the idea is to ...but
this is what i am trying to do ..i am trying to stitch 2
images 'outside' matlab, but using matlab to do the
stitching.... if that makes any sense....

Please let me know if you have any ideas towards it..I am
basically trying to make an image which is abt a couple 100
megapixels but through matlab

cheers
vasaq

.

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