String vectors in HDF5

Hi,

does anyone know if i can create a dataset in an HDF5 file from a string array (or char cell array) in Matlab?

Thanks heaps in advance,

Peter

Answer 1

[Deepak]

Hi Peter,

As I understand it, you want to know how we can create and store data in an HDF5 file from a string array/ char cell array in MATLAB.

We can accomplish this using “h5create” and “h5write” functions in MATLAB. We specify the output file name, data types, and size of the file in “h5create” to create the output dataset file. Then we can call “h5write” function to write the string/char cell array data into the output HDF5 file. We can also read and display the output data using the “h5read” function in MATLAB.

Here is the sample MATLAB code for the same:

charCellArray = {'Hello', 'World', 'MATLAB', 'HDF5'}; 
h5create('mydata2.h5', '/dataset', size(charCellArray), 'Datatype', 'string'); 
h5write('mydata2.h5', '/dataset', charCellArray); 
data = h5read('mydata2.h5', '/dataset'); 

disp(data); 

Please find attached the documentation of functions used for reference:

h5create - www.mathworks.com/help/matlab/ref/h5create.html

h5write - www.mathworks.com/help/matlab/ref/h5write.html

I hope this helps in resolving the issue.