I have written a code to assign each co-ordinate of matrix A(5 x 5) as A(1,1) = 1; A(1,2) = 2; and so on till A(5,5) = 25. But the code is giving errors.

I need to store it in an array using loops like [1 2 ....25]. The below code is giving me, "Expression is incorrect--possibly unbalanced (, {, or [." k = 1; for i = 1:r; for j = 1:c; A(k,:) = (i,j); k = k + 1; end end

Answer 1

[John D'Errico]

The line:

A(k,:) = (i,j);

is not valid MATLAB syntax. Perhaps you wanted to write

A(k,:) = [i,j];

I cannot know if that is what you really want.

Of course, you can replace the loops completely using tools like meshgrid of ndgrid.

[Neha W]

Thank you. I will definitely try to implement using meshgrid.

[John D'Errico]

Something like this would be a start:

[rr,cc] = meshgrid(1:r,1:c);
A = [rr(:),cc(:)];

I'd need to check to see if it generates them in the sequence you asked for, but it will be close.