I need help about writing a script to get a vector consisting of Max and min for each column in a matrix.

Suppose having a matrix A= [1 2 3;4 5 6; 7 8 9] you need a vector B = [ min a(colmn1) max a(column 2) min a(column)] B =[1 6 7]

Answer 1

[Azzi Abdelmalek]

A= [1 2 3;4 5 6; 7 8 9] 
B=[min(A(:,1)) max(A(:,2)) min(A(:,3))]

But in your case you mean max or min in rows, not in column.

B=[min(A(1,:)) max(A(2,:)) min(A(3,:))]

If your matrix is big

A= [1 2 3;4 5 6; 7 8 9];
B=zeros(1,size(A,2));
B(1:2:end)=min(A(1:2:end,:),[],2)';
B(2:2:end)=max(A(2:2:end,:),[],2)'