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how to save matrix with the index of matrix name increase in every loop?

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UTA
UTA 2013-4-17
As I ask above, I want to use 'save' function to save the data in .mat format. However, I want to save the data ,which comes from loop, with the name can shown it comes from the number of the loop. part of the code as follow:
for i=1:10
is=num2str(i);
filename=['image' is '.png'];
I=im2double(imread(filename));
imshow(I,[])
[x,y] = ginput(n);
end
here I want to save [x,y] comes from each loop with the name of 'click_points_1 'to 'click_points_10'. How can I do that? thank you very much!

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Walter Roberson
Walter Roberson 2013-4-17
matfilename = sprintf('click_points_%d.mat', i);
save(matfilename, 'x', 'y');

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