MATLAB: How to count the number of nonzero numbers in a row.

count

I having a matrix A=[ 0 0 0 0 0.4 0 0 0.3;
0.1 0 0 0.7 0 0.2 0 0 0;
0 0 0.6 0 0 0 0 0.9]
I want to count the number of elements which is not equal to zero present in each row
the answer will be A=[2;
3;
2]
I tried with the command
D=(numel(A~=0),1)
But unable to get the result.Could anyone please help me on this.

Best Answer

Read about nnz
A=[ 0  0  0  0  0.4  0  0  0.3;
   0.1  0  0  0.7  0  0.2  0  0  ;
   0  0  0.6  0  0  0  0  0.9] ;
[m,n] = size(A) ;
iwant = zeros(m,1) ; 
for i = 1:m
    iwant(i) = nnz(A(i,:)) ;
end
iwant
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