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print last three chars of filename

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Gmc
Gmc 2015-1-26
评论： Gmc 2015-1-27
Hello - I have a list of filenames which always end with the authors' initials preceding the extension (e.g., GM_video_9_HLL.TXT). I need to read in just the initials like this
output = dir('*.TXT');
for k = 1:numel(output)
initials = (output(k).name(19:21));
end
fid = fopen('fields_test1.txt','wt');
fprintf(fid,'OPEN\n');
fprintf(fid,'------------\n');
fprintf(fid,'Field(' , initials , ')\n');
fclose(fid);
The problem is the last three letters are not always at space 19:21 as in the example but they are always the last three letters before the extension in the filenames. Any help would be very much appreciated!
Thank you

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采纳的回答

Steven
Steven 2015-1-26
filename(end-3:end)

更多回答（1 个）

Image Analyst
Image Analyst 2015-1-26
initials = output(k).name(end-6:end-4);

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