Delete files with specific names
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Hello
I have a directory with files from the same type with names like:
2016_03_24_09 -0002-0001-00058.dcm
2016_03_24_09 -0002-0001-00059.dcm
2016_03_24_09 -0002-0001-00060.dcm
etc.
Based on the last 5 figures (e.g.,*00060.dcm),
I need to delete every file that ends with a number greater than 276.
Is there a way to do it in a loop?
Thanks,
Tali
4 个评论
John
2016-5-31
files = ls('*.dcm'); % list of files with .dcm extension
for n = 1:N
ind1 = strfind(files(n,:), '-'); % indicies of the '-' char
ind2 = strfind(files(n,:), '.'); % index of '.'
str = files(n,ind1(end)+1:ind2-1);% extract the numeric string
if str2num(str) > 276
delete(files(n,:)); % delete if greater than 276
end
end
Tali Leibovich
2016-5-31
Image Analyst
2016-5-31
You need
for n = 1: size(files, 1)
and, since using ls gives you a character array instead of a cell array, you'll need
delete(strtrim(files(n,:)));
to trim off the extra whitespace. If you use dir() instead of ls(), you don't need to use strtrim().
Tali Leibovich
2016-5-31
采纳的回答
You can get the filenames using
d = dir;
filenames = {d.name};
Loop through the filenames
for i = 1:numel(filenames)
fn = filenames{i};
[num, cnt] = sscanf(fn(find(fn == '-', 1, 'last')+1:end-4), '%d');
if cnt == 1 && num > 276
disp(fn)
end
end
This just displays the files to be deleted. If everything is alright, replace
disp(fn)
with
delete fn
4 个评论
Tali Leibovich
2016-5-31
Image Analyst
2016-5-31
The files have to be in the same folder. Otherwise you'll have to prepend the folder with the fullfile() function.
Also, you might want to put
recycle on;
before the code to send it to the recycle bin instead of losing it forever.
And if you have the file manager open, you might need to refresh the view to see the changes.
Tali Leibovich
2016-5-31
This code will not work since
delete fn
will try to delete a file with the name "fn". So the result will be:
Warning: File 'fn' not found.
Or in this example:
delete(fn);
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