get rid of NaNs

I have two matrix A and B I want to remove all row and columns with all NaNa in matrix A and accordingly delete the same row and column in B:

A( all( isnan( A ), 2 ), : ) = []; % removes all rows with all nans

A( :, all( isnan( A ), 1 ) ) = []; % and columns

this remove all row and column with all NaNs, But I want to remove the exact row and column from B, too, here is an example:

>> A=[1 2 3 NaN NaN 5 6 7];

>> B=[1 2 3 4 5 6 7 8]; I want the B as below:

B=[1 2 3 6 7 8];

Thanks in advances!

Answer 1

[per isakson]

    rows_to_be_removed = all( isnan( A ), 2 ),
    A(rows_to_be_removed,:)=[];
    B(rows_to_be_removed,:)=[];
    etc.

Given that A and B have the same size.

Answer 2

[Thomas]

A=[1 2 3 NaN NaN 5 6 7];
B=[1 2 3 4 5 6 7 8];
check=find(isnan(A));
B(check)=[]

Answer 3

[Andrea]

actually it was an simple example. But I want to remove rows with all NaNa and then remove the same rows from another matrix accordingly.