Copy element of matrix to another matrix

hello all,,

i wanna ask about how to copy element of matrix to another matrix

example :

i've matrix B and i want the element of matrix B copied into another matrix(matrix F)

this's my code

a= input ('Input Number of Data :');

for c=1:a

        int2 = ['Input The First Score - ',num2str(c),' :'];

        int3 = ['Input The Second Score - ',num2str(c),' :'];

        str = ['Input Category ke - ',num2str(c),' :'];

        b(c,1) = input(int2);  

        b(c,2) = input(int3);

        f{c,3} = input(str,'s');

    end;

everytime i use command "f=b(:,1:2)" the element of matrix f is missing and that's change with element of matrix b

i want the element of matrix f still in matrix f although the element of matrix b copied into matrix f

please help me

NB : sorry for my bad english :)

Answer 1

[Thorsten]

If you want to copy for each c the first two elemens of b to f, use inside the for loop

f(c, 1:2) = b(c, 1:2);

Or you can also do this for all rows outside the for loop using

f(:, 1:2) = b(:, 1:2);

[baby]

it's not working

i got error message "??? Conversion to cell from double is not possible."

maybe because element of matrix b is not string so it can't copied

is that true?

any idea?

[Thorsten]

You can do it like this

for i = 1:size(b,1)
  for j = 1:2
    f{i,j} = b(i,j);
  end; 
end

I tried f{: 1:2} = num2cell(b(:, 1:2)) but that did not work.

[baby]

thx u so much Thorsten :)

Answer 2

[Annmaria T Joy]

How to copy the output from a loop to a matrix?