[SOLVED] Attempted to access F2(6); index must be a positive integer or logical.

[keremcant]

I am trying to create an array inside a for loop and then I will plot it in MATLAB. bu I am tring to do it by incrementing the variable by 0.01 at one time. like this:

for w = 0.01:0.01:20
      F2(100*w) = G/abs(w^4 - C*G*w^2 + G);
end

it gives me the error : Attempted to access F2(6); index must be a positive integer or logical.

this seems silly because 6 is a positive integer index and also it can make the code work until 6 but at 6 it gives an error

what am I doing wrong??

thanks in advance

 

[alperuslu]

I think it is a matlab bug or something that i dont know. Try to convert index value to unsigned int as follows:

for w = 0.01:0.01:20
F2(uint32(100*w)) = G/abs(w^4 - C*G*w^2 + G);
end

I guess this conversion solves your problem.

Regards,
ALPER USLU