string - matlab iterative filenames for saving

Question

this question about matlab: i'm running a loop and each iteration a new set of data is produced, and I want it to be saved in a new file each time. I also overwrite old files by changing the name. Looks like this:

name_each_iter = strrep(some_source,'.string.mat','string_new.(j).mat')

and what I#m struggling here is the iteration so that I obtain files: ...string_new.1.mat ...string_new.2.mat etc.

I was trying with various combination of () [] {} as well as 'string_new.'j'.mat' (which gave syntax error)

How can it be done?

Answer 1

Strings are just vectors of characters. So if you want to iteratively create filenames here's an example of how you would do it:

for j = 1:10,
   filename = ['string_new.' num2str(j) '.mat'];
   disp(filename)
end

The above code will create the following output:

string_new.1.mat
string_new.2.mat
string_new.3.mat
string_new.4.mat
string_new.5.mat
string_new.6.mat
string_new.7.mat
string_new.8.mat
string_new.9.mat
string_new.10.mat