running a script in different folders

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maryam al labbad
maryam al labbad 2020-11-10
回答： Image Analyst 2020-11-10
Hi all,
I have been working on a piece of code that will automatically process multiple files in a folder automatically
saveFolder=''%save folder for data
FolderLength = ''
File_Struct = dir(fullfile(FolderLength, '*.mat'))
File_Path = cell(size(File_Struct,1), 1);
for k = 1 : 1 : size (File_Struct,1)
File_Path {k} = fullfile(File_Struct(k).folder, File_Struct(k).name);
fprintf(1, 'Now reading %s\n', File_Path {k});
load(File_Path {k}); %this is changed
Data1 = ProcessData1(Data);
Data2 = ProcessData2(Data);
save(fullfile(saveFolder, sprintf('psData_%d.mat', k)),'Data')
I have a folder which has 3 subfolders, each has 10 files. The code above is running the functions on each subfolder indivisually (10 files).
I know that
'**/*.mat'
will process all files in a main folder, but I want to define the subfolders and corresponding save folders somehow, then ask matlab to go over each subfolder --> process data using the above code--> then save to 1 of the 3 save folders.
I tried to use different methods like changing the directory or definining the multiple subfolder like:
mainfolder={'path for 1st subfolder','path for 2nd subfolder','path for 3rd subfolder'}
for i=mainfolder
cd=(mainfolder{1})
saveFolder=''%save folder for data
FolderLength = ''
File_Struct = dir(fullfile(FolderLength, '*.mat'))
File_Path = cell(size(File_Struct,1), 1);
for k = 1 : 1 : size (File_Struct,1)
File_Path {k} = fullfile(File_Struct(k).folder, File_Struct(k).name);
fprintf(1, 'Now reading %s\n', File_Path {k});
load(File_Path {k}); %this is changed
Data1 = ProcessData1(Data);
Data2 = ProcessData2(Data);
save(fullfile(saveFolder, sprintf('psData_%d.mat', k)),'Data')
cd=(mainfolder{2})
saveFolder2=''%save folder for data
Data1 = ProcessData1(Data);
Data2 = ProcessData2(Data);
save(fullfile(saveFolder2, sprintf('psData_%d.mat', k)),'Data')
cd=(mainfolder{3})
saveFolder3=''%save folder for data
Data1 = ProcessData1(Data);
Data2 = ProcessData2(Data);
save(fullfile(saveFolder3, sprintf('psData_%d.mat', k)),'Data')
end
end
, but it did not work. Any hint would be appreciated

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回答（1 个）

Image Analyst
Image Analyst 2020-11-10
Use sprintf() inside the loop to create a specified saveFolder. Something like
Try this code, which has a number of improvements to improve robustness:
inputFolder = pwd % Wherever...
filePattern = fullfile(inputFolder, '*.mat')
File_Struct = dir(filePattern)
numberOfFiles = length(File_Struct);
for k = 1 : numberOfFiles
thisFolder = File_Struct(k).folder;
fullInputFileName = fullfile(thisFolder, File_Struct(k).name);
fprintf('%4d of %4d : Now reading input %s\n', k, numberOfFiles, fullInputFileName);
str = load(fullInputFileName);
if isfield(str, 'Data')
Data = str.Data;
Data1 = ProcessData1(Data);
Data2 = ProcessData2(Data);
% Make up the sub-folder name somehow. Adapt as needed to make it whatever it needs to be.
newSubFolder = sprintf('%d', k);
outputFolder = fullfile(inputFolder, newSubFolder);
if ~isfolder(outputFolder)
% Make output folder if it does not exist.
mkdir(outputFolder);
end
% Now that we have the subfolder name, make up the new base file name of the mat file.
baseFileName = sprintf('psData_%d Data', k);
fullOutputFileName = fullfile(outputFolder, baseFileName);
fprintf(' Saving output %s.\n', fullOutputFileName);
% Save Data into a new mat file.
save(fullOutputFileName, 'Data')
else
fprintf(' !!!! Data variable not found inSaving output %s.\n', fullInputFileName);
end
end
Adapt as needed.

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