Trying to change name of image file in for loop - use %s?

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Chelsea
Chelsea 2014-12-30
回答： Image Analyst 2014-12-30
Hi,
I'm trying to create a for loop, where I gather screen shots and save them (trial 1, trial 2..., etc.). I tried to use the following:
imwrite(imageArray, '%s.jpg',trial)
to create different names for each image, as the loop continues. However, this didn't work. Is there any other way to do this, other than "if trial 1....else if trial 2, etc.?"
I am using PTB, if that's useful.
Thank you!

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采纳的回答

Sean de Wolski
Sean de Wolski 2014-12-30
Use the filename as the following
for ii = 1:10
filename = ['trial' num2str(ii) '.jpg']
imwrite(I,filename)
end
It looks like what you were trying to do was use sprintf inside of imwrite. This would work too, but it a little more power than you need:
filename = sprintf('trial%i.jpg',ii)

更多回答（1 个）

Image Analyst
Image Analyst 2014-12-30
Read this part of the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F Then read the rest of it too, because there is lots of good stuff in there.

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