It seems rrr(binZ)=NaN; should also work for you. I am assuming binZ is a logical big matrix where the entry is true if that element is double zero (or whatever you mean by double zero).
NOTE: By the way, I DON'T think rrr(rows,cols)=NaN is a correct way of doing it. Let me give you an example:
>> A=ones(3,3)*2
A =
2 2 2
2 2 2
2 2 2
So I want to set, let's say, element (1,1), (1,3), and (3,2) to NaN;
>> rows=[1,1,3];
>> cols=[1,3,2];
>> A(rows,cols)=NaN
A =
NaN NaN NaN
2 2 2
NaN NaN NaN
While clearly this is wrong. The correct answer is:
>> A(sub2ind(size(A),rows,cols))=NaN
A =
NaN 2 NaN
2 2 2
2 NaN 2
It was assumed you have 2D arrays or (matrices) so they are all MxN arrays.
