How to save figures from foor loop in separate folders

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Niya Bedzheva 2019-9-16

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https://ww2.mathworks.cn/matlabcentral/answers/480586-how-to-save-figures-from-foor-loop-in-separate-folders

评论： Bjorn Gustavsson 2019-9-16

Hello everyone,

i was wondering how can i save the graphics from every foor loop in a different folder named after the file that is running?

here is my code, where i just save them in the directory. But i want matlab to make separate folders where the figures from every run are saved (there are 4 figures per file, and around 5 files per loop)

saveas (h1, sprintf('Experimental_drying_rates_%d.png', i));
saveas (h2, sprintf('Calculated_drying_rates_%d.png',i));
saveas (h3, sprintf('Compariso_experimental_and_calculated_rates_%d.png',i));
saveas (h4, sprintf('Various_drying-air_flowrates_%d.png', i));

thank you in advance!

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Answer 1

Bjorn Gustavsson 2019-9-16

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https://ww2.mathworks.cn/matlabcentral/answers/480586-how-to-save-figures-from-foor-loop-in-separate-folders#answer_392063

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Generate your file-names with fullfile (that way you can have multiple directories in a cell-array, one for each of your wanted target dirs):

dirs = {'a','b','c'};
runs = {'Q','W','E','R','T'};
for i1 = 1:numel(runs),
  filename1 = [fullfile(dirs{1},runs{i1}),'.png'];
  filename2 = [fullfile(dirs{2},runs{i1}),'.png'];
  filename3 = [fullfile(dirs{3},runs{i1}),'.png'];
  disp(filename1)
  disp(filename2)
  disp(filename3)
end

HTH

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Niya Bedzheva 2019-9-16

okaay, thank you very much, it can be one solution, buut what if the number of the files for every loop is changing. how can i make the runs to count automatic

Bjorn Gustavsson 2019-9-16

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Then I'd save all figures from one run in a run-specific directory, perhaps something like:

runs = {'Q','W','E','R','T'};
files_all_runs = {{'a','b'},{'a'},{'a','b','c','d'},{'a','d'},{'b'}};
for i1 = 1:numel(runs),
  for i2 = 1:numel(files_all_runs{i1})
    filename1 = [fullfile(runs{1},[runs{i1},'-',files_all_runs{i1}{i2}]),'.png'];
    disp(filename1)
  end
end

If you somehow autogenerate the files you want from each run you have to do a bit more careful handling of the filenames, but the pattern should be reasonable similar.

HTH

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