The variable in a parfor cannot be classified

While performing a simple parfor loop I get the error

    Error: The variable n_min in a parfor cannot be classified.

The variable n_min is however initialized before the par loop with a simple

    n_min = zeros(T,1);

and then used as a standard vector into the parfor loop. What does exactly mean that it cannot be classified?

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/distcomp/classification-of-variables-in-parfor-loops.html