file names with a shared beginning

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Elaheh
Elaheh on 24 Mar 2018
Commented: Elaheh on 25 Mar 2018
I have different files in a folder, but I want to select files such as 1_1_11.ev2, 1_2_13.ev2, with this common part "strcat(num2str(p),'_')". What should I write instead of the blank in the 3rd line after the "folderName"?
for p =1:length(directoryNames)
folderName = directoryNames{p};
Files = dir(strcat(folderName, ... ));
end
  2 Comments
Image Analyst
Image Analyst on 25 Mar 2018
Elaheh's "Answer" moved here since it's a comment to Rik rather than an answer to the posted question.
Thank you for your comment. The point is that there are files with .ev2, which I do not need. I need only the files that have strcat(num2str(p),'_') at the beginning in common. 1_1_13.ev2, 1_2_18.ev2. etc.

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Accepted Answer

Image Analyst
Image Analyst on 25 Mar 2018
You could try something like this:
for p =1:length(directoryNames)
folderName = directoryNames{p};
filePattern = fullfile(folderName, '*.ev2');
for k = 1 : length(filePattern)
thisFileName = filePattern(k).name;
if UseThisFile(thisFileName)
% Do something with it.
end
end
end
You would write a function called UseThisFile() that determines if the file is one you want to use or not based on the characters between the underlines. So that function would parse the filename and determine if it's OK to use or not and return true or false, respectively.
  9 Comments
Elaheh
Elaheh on 25 Mar 2018
Thank you so much. It works

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