how to resolve this program

I have 2 matrix, i.e dataNID(1000x20) and A(1x20). I compare the A with dataNID. ans1 is less than and ans2 is morethan. these 2 matrix (1000x20), I am getting logically. but if I write program for values of particular logic then it is showing all values in a single column. but i need all value in the respective columns. here is the code

ans1= (dataNID < A);
ans2= (dataNID > A);
value1= dataNID(ans1);
value2= dataNID(ans2);

please help me.

Answer 1

[KSSV]

value1 and value2 will be columns only. From the matrix, you are picking those values which obey the condition, by using logical indexing. The output is correct. IF you are expecting a matrix, you can do the following:

A = rand(10) ;
B = rand(1,10) ;

idx0 = A>B ;
idx1 = A<B ;

C = NaN(size(A)) ;
C(idx0) = A(idx0)

The output is a matrix with NaN where condition is not obeyed.