how to convert .mat file to .h5 file

I have a dateset which is saved as .mat files. Now I have to transfer them into .h5 format,but I am a starter and I don't have any experience before,so anyone knows about it and answers me would help me a lot,thanks.

[Goncalo Costa]

Did you find a solution to this problem?

Answer 1

[Manish]

Hi,

I understand you want to convert the .mat file to .h5 file.To convert a .mat file to an .h5 file, use the ‘h5create’ function to create the HDF5 file and the ‘h5write’ function to write the data from the .mat file into HDF5 format.

Here is the sample code:

data = load(matFileName);
h5FileName = 'data.h5';
% Loop through each variable in the .mat file
fields = fieldnames(data);
for i = 1:length(fields)
    fieldName = fields{i};
    fieldData = data.(fieldName);
    % Define the dataset path in the .h5 file
    datasetPath = ['/' fieldName];
    if ischar(fieldData)
        % Handle strings: convert to uint8 (ASCII values)
        fieldData = uint8(fieldData);
        h5create(h5FileName, datasetPath, size(fieldData), 'Datatype', 'uint8');
    else
        % Create the dataset in the .h5 file
        h5create(h5FileName, datasetPath, size(fieldData));
    end
    h5write(h5FileName, datasetPath, fieldData);
    disp(['Converted and wrote variable "', fieldName, '" to ', h5FileName]);
end

Here is the documentation link for ‘h5write’ and ‘h5create’:

• https://www.mathworks.com/help/matlab/ref/h5write.html
• https://www.mathworks.com/help/matlab/ref/h5create.html

Hope this helps!