Is it the correct way to extract the value for the logical matrix?

I got the following local matrix and now I want to extract the values for the logical 1, but when I do so, I'm getting an error which is

Array indices must be positive integers or logical values.

[X,Y]= meshgrid(T2{:,5},T1{:,5});
A = X(idx);
B = Y(idx); 

A = X(idx);
'Array indices must be positive integers or logical values

X and Y has the same size

Answer 1

[Matt J]

Your screenshot shows that idx is type double, not logical. You can easily convert it, however:

idx=logical(idx);