Execution of code ends prematurely

Hi,

I have a function that is about 100 lines long, but it is not executed after the following block within the function:

k = 1; 
coeffs=[];
[m_cutfit2, n_cutfit2] = size(co_c_s_f);
while k <= n_cutfit2
    coeffs = vertcat(coeffs, polyfit(q_fitting,co_c_s_f(:,k),9));
    k=k+1;
end

%rest of code

No error message or busy signal is given. What is the general cause of this problem, and how may I fix it in this case?

Thanks

Answer 1

[Kyle]

@Matt - Thanks for the cleaning up of the concatenation code. I wasn't sure how to do that.

When I cleared all variables and re-ran the script, it worked. Sorry to have wasted your time. I appreciate your help though.

Answer 2

[Walter Roberson]

If the second dimension of co_c_s_f is 0 (empty matrix) then the loop will not be executed because 1 <= 0 is false.

If you are saying that the loop is being executed but somewhere along the way the routine as a whole quits, then have you try commanding

dbstop if error

at the command line, before execution?

Answer 3

[Matt Tearle]

This isn't the cause of the problem, but first:

n_cutfit2 = size(co...,2);
coeffs = zeros(n_cutfit2,10)
for k = 1:n_cutfit2
  coeffs(k,:) = ...
end

Now, do you mean that the code executes up to and including this loop, but the rest of the code just doesn't run? How have you determined this? Have you tried setting a breakpoint at the next line? Without seeing the rest of the code, it's hard to know what might be happening.