How can i convert this string into an input for a function?

Hello, everyone! I have this program:

ch=['MRWI'

'IDMZ'

'CGBI'

'JKNO']

v=[];

[x,y]=size(ch)

for i=1:x

v=[v, 'ch(',num2str(i),',:),']

end

where v will be equal to the string: ''ch(1,:),ch(2,:),ch(3,:),ch(4,:),'. My question is how can i use v as an input for a function? for exemple, to display the values of v as 'MRWI,IDMZ,CGBI,JKNO'

[David Hill]

Why do you want to do that? You should try not to do that if at all possible.

[Robu Robert]

Hello, @David Hill . I just try to figure out how can i get to resolve my actual problem, which i described in a previous post ( https://www.mathworks.com/matlabcentral/answers/809040-how-to-get-all-combinations-from-this-matrix ) . So far, i could not come up with anything

[Stephen23]

As David Hill wrote, you should avoid converting data to character representations of the same data.

As Rik wrote, the correct approach is to use a comma-separated list:

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

Bruno Luong showed you exactly how here:

https://www.mathworks.com/matlabcentral/answers/809040-how-to-get-all-combinations-from-this-matrix#answer_683680

Answer 1

[Rik]

ch=['MRWI'
    'IDMZ'
    'CGBI'
    'JKNO'];
v=ch.';v=v(:).';
disp(v)

[Robu Robert]

Thank you for your answer. I need the output of the program to be the input for a function named allcomb which looks like this :

allcomb(ch(1,:),ch(2,:),ch(3,:),ch(4,:))

So i can t use the sequence you just proposed

[Rik]

Then you need cell2mat, after which you can use {:} to create a comma separated list.