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

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PIRIL
PIRIL 2014-12-9
评论： PIRIL 2014-12-10
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

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采纳的回答

Matt J
Matt J 2014-12-9
pos=A>0;
neg=A<0;
output=[sum(A.*pos,2)./sum(pos,2) , sum(A.*neg,2)./sum(neg,2)]

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-12-9
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))')]

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