MATLAB: How to select higher value in a matrix and change that by introducing an error

Question

I have a matrix,

a= [ 0.83 0.85 0.97 0.1 0.95 0.93 0.2 ; 0.2 0.12 0.12 0.76 0.77 0.78 0.25 ; 0.88 0.32 0.11 0.77 0.87 0.89 0.99]

by ceil(a) we get c matrix: c=[ 1 1 1 0 1 1 0 ; 0 0 0 1 1 1 0 ; 1 0 0 1 1 1 1]

now i want to introduce error position wise as err=1:3

so, at first err=1 will be introduced to first row where the only highest value is find in matrix a and 1 will become 0,same wise in 2nd row and 3rd row. Then err=2, that means the first two highest value is find and 1 will become zero, then same will be carried out for 2nd,3rd row. Next err=3…where 3 higher value will be changed.

please help me out asap….

plz plz plz…..

Answer 1

Are you looking for something like this?

a= [ 0.83 0.85 0.97 0.1 0.95 0.93 0.2;
    0.2 0.12 0.12 0.76 0.77 0.78 0.25;
    0.88 0.32 0.11 0.77 0.87 0.89 0.99];
c=round(a)
for i=1:3
    for err=1:3
        [~,d]=sort(a(err,:),'descend');
        a(err,d(1:i))=0;
    end
end
cfinal=round(a)

I hope this will help!