Strange Matlab error: "??? Subscript indices must either be real positive integers or logicals"
- by Roee Adler
I have a function func that returns a vector a. I usually plot a and then perform further analysis on it. I have a certain scenario when once I try to plot a, I get a "??? Subscript indices must either be real positive integers or logicals" error. Take a look at the following piece of code to see the vector's behavior:
K>> a
a =
5.7047 6.3529 6.4826 5.5750 4.1488 5.8343 5.3157 5.4454
K>> plot(a)
??? Subscript indices must either be real positive integers or logicals.
K>> for i=1:length(a); b(i) = a(i); end;
K>> b
b =
5.7047 6.3529 6.4826 5.5750 4.1488 5.8343 5.3157 5.4454
K>> plot(b)
??? Subscript indices must either be real positive integers or logicals.
The scenario where this happens is when I call function func from within another function (call it outer_func), and return the result directly as outer_func's result. When debugging inside outer_func, I can plot a properly, but outside the scope of outer_func, its result has the above behavior.
What can cause this? Where do I start from?
