.mat to .excel

Hello I was using this workflow to convert the .mat file to excel file

 load('Filename.mat')
 csvwrite ('NewfileX.csv', File00X);

So my initial matrix is composed of 90 matrixes and I was wondering how to automate this process so that the loop does each matrix one by one. I was trying to make the X value change each loop but it doesn't work.

Answer 1

[Walter Roberson]

filestruct = load('filename.mat');
fields = fieldnames(filestruct);
for K = 1 : length(fields)
    thisfield = fields{K};
    outfilename = sprintf('New_%s.csv', thisfield);
    csvwrite(outfilename), filestruct.(thisfield));
end

This will write each variable inside of filename.mat as a separate csv file that is named "New_" followed by the name of the variable.