Averaging positive and negative values seperately for each array in a matrix

Hi all,

I have a 40X1000 matrix and I want to average positive and negative values seperately for each array.

Lets say A=[0 2 2 -1 -7; 0 -1 -3 -2 6], I want an output file like output=[4 -4; 6 -2].

Does any of you know how to solve this ?

Many thanks

[Matt J]

Based on the A shown, I think the output should be

      output =

           2    -4
           6    -2

Answer 1

[Matt J]

     pos=A>0;
     neg=A<0;

     output=[sum(A.*pos,2)./sum(pos,2)  ,  sum(A.*neg,2)./sum(neg,2)]

[PIRIL]

thanks.

Answer 2

[Azzi Abdelmalek]

A=[0 2 2 -1 -7; 0 -1 -3 -2 6]
x1=[arrayfun(@(x) mean(A(x,A(x,:)>0)),(1:size(A,1))') arrayfun(@(x) mean(A(x,A(x,:)<0)),(1:size(A,1))')]

[PIRIL]

thank you so much.