MATLAB: Minimum value ineach column

Question

Hi all

i want to extract the minimum positive value in each column, i have used this code

for j=1:length(columnA)
a(j)=min(A(A(:,j)>0));
end

but i am not able to solve the problem. A is a matrix

Thank for the help

Answer 1

We don't know what columnA is in the code that you've shown. It would have to be a vector with the same number of columns as A for the code to work.

Regardless, the complete operation can easily be done without looping:

B=A: B(A<=0)=+inf;
a=min(B,[],1);