index must be a positive integer or logical

Here is the portion of code that I am using currently that is giving me this error:

A = interpolate;    
averg = mean([A(1:end-2),A(3:end)],2);
real_num = A(2:end-1);
streaking = [];
for idx = real_num
  streaking(:,idx) = (abs(A(:,idx)-averg(idx))./averg(idx))*100;
end

>> Attempted to access A(:,73.2855); index must be a positive integer or logical.

>> Error in rad_cal2 (line 818)

    streaking(:,idx) = (abs(A(:,idx)-averg(idx))./averg(idx))*100;

interpolate is a matrix

Answer 1

[Matt Fig]

The solution will depend on what you want to do. You could simply do:

for idx = round(real_num)
  streaking(:,idx) = (abs(A(:,idx)-averg(idx))./averg(idx))*100;
end