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How to load files in numerical order?

Date: 2023-07-29 14:35:04

Hello everyone,
 
I am loading multiple dicom files from the same folder using the following code:
 
imagesFolder = uigetdir('C:\','Select your folder with DICOM files');
filePattern = fullfile(imagesFolder, '*.dcm'); 
theFiles = dir(filePattern);

for k = 1 : length(theFiles)
	baseFileName = theFiles(k).name;
	fullFileName = fullfile(imagesFolder, baseFileName);
	fprintf(1, 'Now reading %s\n', fullFileName);
	imageArray = dicomread(fullFileName);
end

The problem is that I have my files numbered as follows: name1, name 2, ..., name10, name11, ..., name100, name101, etc. And when I load the files they are inserted in the 3D variable (in this case imageArray) with the following order: name1, name10, name100, name101, ..., name109, name11, name110, name111, etc.

In my windows folder I see the files ordered. How can I load the files in order?

 

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Expert Answer:

:
It has plenty of examples and help, so you should not have any problems using it. E.g.:
 
P = uigetdir('C:\','Select your folder with DICOM files'); 
S = dir(fullfile(P,'*.dcm'));
S = natsortfiles(S); % sort filenames into alphanumeric order
for k = 1:numel(S)
	baseFileName = S(k).name;
	fullFileName = fullfile(P, baseFileName);
	fprintf(1, 'Now reading %s\n', fullFileName);
	imageArray = dicomread(fullFileName);
end

 

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