Storing values from a for-loop in a matrix. Error: Subscripted assignment dimension mismatch.

Hello everybody,

I have been reading the forums the whole day and trying different combinations to solve my problem but I could not get an answer yet.

T1' is a 1x50-row-vector, T_iso1 is a 50x50-square-matrix, and bsfc1 is also a 50x50-square-matrix.

I want to store in a matrix the column-vectors vq from the interpolation for every i. I can run the code and get a column vector vq for every i, but then I only store the last one. However, when I try to store them all in a matrix A I get always the error 'Subscripted assignment dimension mismatch.'

The code is the following:

lim=50;
for i=1:lim
    x = T1'; 
    xq = T_iso1(:,i);
    v = bsfc1(:,i)';
    vq= interp1(x,v,xq,'spline')
    A(:,i) = vq;
end

Could anybody help me out? I would appreciate any comment.

Thank you very much in advance,

John

Answer 1

[James Tursa]

Your code runs fine for me with random inputs as follows:

    Name         Size
    T1          50x1
    T_iso1      50x50
    bsfc1       50x50

Maybe you have an "A" variable floating around with a different size? Try pre-allocating "A" first. E.g.,

A = zeros(50,lim);

[John Mathew]

Oh my god! Thank you James. I have been trying so many different things today that I did not pay attention to the basics... Yes, it was exactly what you said. Thank you!