Using i as an index within a loop in Matlab 2016a

1 view (last 30 days)
Is there a simple, global way to force Matlab 2016 to allow i to be used as a vector index within a loop statement that uses i as the loop index? I've been using i as a convenient index in for loops forever, and the simple assignment statement in the for statement was always sufficient to convert it from it's built in complex type to an integer. i.e.
for i=1:5,
In Matlab 2016a, this code barfs because i retains its complex definition within the scope of the loop, so can't be used as the index into a vector within the loop. Adding an explicit assignment to an integer e.g. i=0, before the loop, or changing i to another variable name works, but I'd rather not modify every routine that uses i as an index within a loop.
  1 Comment
Steven Lord
Steven Lord on 5 Oct 2016
Please show the full, exact text of the error message you receive. The behavior you're describing shouldn't happen and doesn't happen when I use release R2016a or R2016b.
for i = 1:5
y(i) = 23;

Sign in to comment.

Accepted Answer

Matthew Eicholtz
Matthew Eicholtz on 5 Oct 2016
I don't know what you mean by "this code barfs". I ran a simple for-loop in MATLAB R2016a with i as the index variable and experienced no barfing.
But, as an aside, because of the complex definition of i, I tend to prefer using ii instead of i in for-loops.
  1 Comment
Ken on 5 Oct 2016
My mistake, sorry to waste your time. This issue was reported by a customer using our code, and I mis-interpreted the symptom working over the phone. Turns out the problem was another difference in later Matlab versions that we were already aware of. Thanks for the thoughtful reply.

Sign in to comment.

More Answers (0)


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by