MATLAB: How to get a mixed string from several arrays of strings

strings

I have several arrays of strings which is used to store collections of factors. for example:
factor1={'male';'female'}; factor2={'easy'; 'normal';'hard'};
I want to create a set of filenames for following works.
This is what I want to get:
filename =
    'male_easy.txt'
    'male_normal.txt'
    'male_hard.txt'
    'female_easy.txt'
    'female_normal.txt'
    'female_hard.txt'
This is what I tried:
filename={};
for i=1:length(factor1)
    for j=1:length(factor2)
filename=[filename,[factor1(i),'_',factor2(j),'.txt']];
    end
end
I noticed that [factor1(i),'_',factor2(j),'.txt'] will became↓(when i=1,j=1)
filename =
    'male'    '_'    'easy'    '.txt'
I failed in getting the strings together.
How can I fix it?

Best Answer

Hi,
that's because you used "()" instead of "{}" to access element of a cell, and a "," instead of ";" to concatenate vertically.
you juste need to do :
factor1={'male';'female'};
factor2={'easy'; 'normal';'hard'};
filename={};
for i=1:length(factor1)    
    for j=1:length(factor2)
        filename=[filename;[factor1{i},'_',factor2{j},'.txt']];        
    end
end
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