To combine multiple ".mat" files into a single ".mat" file and then load that data using a datastore in MATLAB, you can refer to the following steps:
1. You can load all the ".mat" files, loop through each file and combine the data into a single structure.Then you can save the data into a new ".mat" file.
fileList = dir(fullfile(folderPath, '*.mat'));
allSignals = {};
allLabels = {};
for i = 1:length(fileList)
filePath = fullfile(folderPath, fileList(i).name);
data = load(filePath);
allSignals{end+1} = data.Signal;
allLabels{end+1} = data.Label;
end
save('PhysionetData.mat', 'allSignals', 'allLabels');
2. After combining all the ".mat" files into a single file, you can load the combined data into MATLAB using the "load" function. The you can then create a table from the loaded signals and labels, which can be used with MATLAB's "datastore" for efficient data processing.
load('PhysionetData.mat', 'allSignals', 'allLabels');
dataTable = table(allSignals', allLabels', 'VariableNames', {'Signals', 'Labels'});
ds = datastore(dataTable);
while hasdata(ds)
dataChunk = read(ds);
end
To learn more about the "datastore" function in MATLAB, you can refer to the following link:
