Reading multiple datasets in hdf5

I have an HDF5 file format where the datasets are in a group like /abc/xyz1 to /abc/xyznnn

All these have similar datasets: name, age, loc

How do I loop through these n subgroups to read all the data from the hdf5 file?

Answer 1

[Animesh]

Hello!

You can use MATLAB's h5info function to get information about the contents of the HDF5 file(including the names of the datasets and groups) and h5read to read the data from the dataset.

You can do something like this to read all the data from all subgroups of "/abc":

filename = 'yourfile.h5';
info = h5info(filename, '/abc');
subgroup_names = {info.Groups.Name};
for i = 1:length(subgroup_names)
    groupname = subgroup_names{i};
    name = h5read(filename, strcat(groupname, '/name'));
    age = h5read(filename, strcat(groupname, '/age'));
    loc = h5read(filename, strcat(groupname, '/loc'));
    % Do something with the data
end

You may refer to the following documentation for more information:

h5info: https://in.mathworks.com/help/matlab/ref/h5info.html

h5read: https://in.mathworks.com/help/matlab/ref/h5read.html