Why can't this example of "Signal Source Separation Using W-Net Architecture" be opened in MATLAB?

When I try to run the example of "Signal Source Separation Using W-Net Architecture" on MATLAB, it showed an error:

"Error saving to local data stream." when communicating with websave (line 107) 5URL 'https://ssd.mathworks.com/supportfiles/SPT/data/fetal-ecg-source-separation-testData,zip'.

error matlab,internal.examples.downloadsupportFile(line 48)localfile =websave(localfile,webFilePath);".

The code block :"Download the train and test data sets using the downloadSupportFile function. The data will be unzipped to the tempdir directory. If you want the data at a different location, change trainingDatasetFolder and testDatasetFolder to the desired locations " can't run, and the detailed code is

if trainNetworkFlag
    % Download training data set
    trainingDatasetZipFile = matlab.internal.examples.downloadSupportFile('SPT','data/fetal-ecg-source-separation-trainingData.zip');
    trainingDatasetFolder = fullfile(tempdir,'fetal-ecg-source-separation-trainingData');
    if ~exist(trainingDatasetFolder,'dir')
        unzip(trainingDatasetZipFile,trainingDatasetFolder);
    end    
end

% Download test data set
testDatasetZipFile = matlab.internal.examples.downloadSupportFile('SPT','data/fetal-ecg-source-separation-testData.zip');
testDatasetFolder = fullfile(tempdir,'fetal-ecg-source-separation-testData');
if ~exist(testDatasetFolder,'dir')
    unzip(testDatasetZipFile,testDatasetFolder);
end

Thank you very much for your answers！Have a nice day！

Answer 1

[Abhishek Kumar Singh]

Hi @Yi Ma,

It seems that you're encountering an issue with downloading the dataset files using the matlab.internal.examples.downloadSupportFile function. This error might be due to a variety of reasons, including but bot limited to network issues.

If the automatic download is failing, you can manually download the files and place them in a folder of your choice (preferably anywhere except the temp directory, as writing permissions for MATLAB may have been disabled).

Here's the snippet you can use (replace tdir with a directory of your choice):

if trainNetworkFlag
    % Manually download the training data set
    trainingDatasetZipFile = fullfile(tdir, 'fetal-ecg-source-separation-trainingData.zip');
    websave(trainingDatasetZipFile, 'https://ssd.mathworks.com/supportfiles/SPT/data/fetal-ecg-source-separation-trainingData.zip');
    trainingDatasetFolder = fullfile(tdir, 'fetal-ecg-source-separation-trainingData');
    if ~exist(trainingDatasetFolder, 'dir')
        unzip(trainingDatasetZipFile, trainingDatasetFolder);
    end    
end

% Manually download the test data set
testDatasetZipFile = fullfile(tdir, 'fetal-ecg-source-separation-testData.zip');
websave(testDatasetZipFile, 'https://ssd.mathworks.com/supportfiles/SPT/data/fetal-ecg-source-separation-testData.zip');
testDatasetFolder = fullfile(tdir, 'fetal-ecg-source-separation-testData');
if ~exist(testDatasetFolder, 'dir')
    unzip(testDatasetZipFile, testDatasetFolder);
end

As an ending note, please ensure you are using MATLAB release R2022b or later.

Hope it helps!

[Yi Ma]

Thank you very much for your answer, it's fantastic! Have a great day!