how to select the highest values form each column and set the other values to zero.

If

A=[0.1290    0.2880    0.0193    0.2064    0.5245    0.5067    0.0255    0.2789;
    0.2721    0.3500    0.0916    0.0913    0.5780    0.4616    0.3746    0.4651;
    0.2011    0.2672    0.3051    0.1836    0.5149    0.3960    0.3730    0.3996;
    0.0610    0.0374    0.0366    0.0453    0.0633    0.2699    0.2800    0.2522]

I want to generate the matrix from A such that it should contain the highest two values present in each column and the rest of values should be set to zero and it should diaplay in the following manner.

A=
    [0        0.2880    0         0.2064    0.5245    0.5067    0         0;
    0.2721    0.3500    0.0916    0         0.5780    0.4616    0.3746    0.4651;
    0.2011    0         0.3051    0.1836    0         0         0.3730    0.3996;
    0         0         0         0         0         0         0         0]

Could anyone please help me on this.

[Raj]

Looks pretty straight forward. However, can you first share what you have tried so far on this?

[jaah navi]

when I tried with the command max(A) it gives only one maximum value from each column.

But i am unable to get the output what i want.that was the reason of posting my question

Answer 1

[Andrei Bobrov]

[m,n] = size(A);
[~,ii] = sort(A);
A(bsxfun(@plus,ii(1:end-2,:),(0:n-1)*m)) = 0;

or

[m,n] = size(A);
[~,ii] = sort(A);
A(ii(1:end-2,:) + (0:n-1)*m) = 0;