How to add filename as a variable in MATLAB?

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Katie
Katie 2020-11-25
评论： Katie 2020-11-25
I have a folder of 1000 .mat files which each of these .mat files is a structure of two fields DH12 and HRF. My aim is to create a csv file that has three columns SubjectID, DH12, HRF. Subjects IDs are the same as the .mat files names that could be extracted by sprintf(name) based on the code below. The output of this loop gives me a table of two columns DH12 and HRF, how can I add the subject ID as a column based on the filenames.
files = dir('*.mat')
for i = 1:numel(files)
mat_filename = fullfile(files(i).folder, files(i).name);
[~, name] = fileparts(files(i).name);
csv_filename = fullfile(files(i).folder, [name '.csv']);
data = load(mat_filename);
X = data.params.f.DH12;
Y = data.params.f.HRF;
Z = horzcat(X,Y);
colNames = {'DH12','HRF'};
sTable(i,:)= array2table(Z,'VariableNames',colNames)
end

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Walter Roberson
Walter Roberson 2020-11-25
编辑：Walter Roberson 2020-11-25
files = dir('*.mat');
numFiles = numel(files);
sTables = table();
for i = 1:numFiles
mat_filename = fullfile(files(i).folder, files(i).name);
[~, name] = fileparts(files(i).name);
csv_filename = fullfile(files(i).folder, [name '.csv']);
data = load(mat_filename);
X = data.params.f.DH12;
Y = data.params.f.HRF;
colNames = {'DH12','HRF'};
sTable = table(X, Y, 'VariableNames', colNames);
[~, sid, ~] = fileparts(csv_filename);
sTable.SubjectID(1:height(sTable)) = {sid};
sTables = [sTables; sTable];
end

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