Conversion of HF File to mat File

Hi.

I want to ask that i have downloaded a dataset of H5 file type. I want to convert this into mat file.How to do it?

[Walter Roberson]

See h5read() if you have a new enough MATLAB version.

[Humera Yasir]

Thankyou!

Answer 1

[Deepak]

Hi @Humera Yasir,

To convert an HDF5 (.h5) file into a MATLAB (.mat) file, we can use built-in functions of MATLAB to read the data from the HDF5 file and then save it in a .mat file format. Below are the key steps on how to perform the conversion:

1. Inspect the File: Use “h5info” function to explore the structure of the HDF5 file. This will help us identify the dataset names and paths that we need to read.
2. Read Data: Use “h5read” function to load the desired data from the HDF5 file. Ensure you specify the correct dataset path.
3. Save Data: Use “save” function to write the loaded data into a .mat file. You can save multiple datasets by including additional variables in the “save” command.

Here is the sample MATLAB code to accomplish the same:

h5FileName = 'filename.h5'; 

% Inspect the structure of the HDF5 file 
info = h5info(h5FileName); 
disp(info); 

% Replace '/dataset_name' with the actual path to the dataset in the HDF5 file 
data = h5read(h5FileName, '/dataset_name'); 

% Save the data to a MAT file 
matFileName = 'yourfile.mat'; 
save(matFileName, 'data'); 

% Optional: Save multiple datasets if needed 
% data2 = h5read(h5FileName, '/another_dataset_name'); 
% save(matFileName, 'data', 'data2'); 

Please find attached the documentation of functions used for reference:

h5info: www.mathworks.com/help/matlab/ref/h5info.html

h5read: www.mathworks.com/help/matlab/ref/h5read.html

save: www.mathworks.com/help/matlab/ref/save.html

I hope this helps.