MATLAB: How to rename a variable, as it changes in a Loop

Question

I have .mat file. and first I load my variables (Data_1,Data_2….Data_60) using

for i=1:60
 load(['matfiles/Data_',num2str(i),'.mat']); 
end

I want to use a loop to write to a spreadsheet instead of writing this 60 times. so I do this

for i=1:60
   xlwrite('saved_file.xls',Data_1, sheetName,'B3') // Data_1 is one of the variable loaded above.Needs to change to Data_2 and so on.
end

now the question is I want to dynamically change the name in Data_1 every iteration using the loaded files. How can I do this.

Answer 1

This is easy, as long as there is only one variable loaded from each .mat file:

for k = 1:60
    F = sprintf('Data%d.mat',k);
    P = fullfile('matfiles',F);
    S = load(F);
    C = struct2cell(S);
    N = sprintf('sheet%d',k);
    xlswrite('saved_file.xls',C{1},N)
end