MATLAB: How to convert row and column vectors of a symmetric matrix to zero if diagonal value is zero

Question

I have symmetric matrices of large size. I need to ensure that if there are any zeros on the main diagonal, then their corresponding row and column vectors are also set to zero. Please help.

Answer 1

This would do it without loop- index=find(diag(your_matrix)==0); your_matrix(index,:)=0; your_matrix(:,index)=0;