how to extract data from .mat file?

I have dataset in h5 format and i read that data using

x = hdf5read(file.GroupHierarchy.Datasets(1));

now x contain 2x1024x31200, I want to extrace 2x1024x10000 from it.

Answer 1

[SungJun Cho]

If you want to extract first 10000 elements from the x, you can just do

extracted_x = x(:,:,1:10000);
% Or if you want specific indexing
begin = 101;
conclude = 10100;
extracted_x = x(:,:,begin:conclude);

Also, just for your information, MATLAB now recommends h5read instead of hdf5read (c.f. here).

Hope this helps.

[Faheem Ur Rehman]

how can i change 2x1024x31200 to 31200x1024x2?

[Stephen23]

https://www.mathworks.com/help/matlab/ref/permute.html