random extraction of files from a folder
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Sivaramakrishnan Rajaraman
on 16 Mar 2017
Commented: Sivaramakrishnan Rajaraman
on 16 Mar 2017
I have a folder of 12000 images (in bmp format). I would like to randomly extract 2000 images and store it in a different folder. How can i do that?
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Accepted Answer
Jan
on 16 Mar 2017
Based on Adam's suggestions:
Dest = 'C:\Temp';
FileList = dir(fullfile(Folder, '*.bmp'));
Index = randperm(numel(FileList), 2000);
for k = 1:2000
Source = fullfile(Folder, FileList(index(k)).name);
copyfile(Source, Dest);
end
Or movefile.
More Answers (2)
Adam
on 16 Mar 2017
doc dir
can be used to give you a listing.
doc randperm
can be applied to your listing to select the random files. I don't have time (or inclination) to write the code for you though so feel free to ask further questions once you have made an attempt if you get stuck.
ES
on 16 Mar 2017
You can do a dir in that folder for a list of files. Use a random number generator of 2000 length.
Select the file based on the random number.
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