MATLAB: How to make an average of points

average matrix row points

Hi, say I have an 11*10 matrix and for every point in the 6th row, I want matlab to take an average of the surrounding points and make a new row; ie 1 point has 8 surrounding points then the same for each point in the row, how would this be done please ? Thanks

Best Answer

Based on your simple example:
A=[1 2 3 4 5 6 7 8 9 10;
   5 2 4 6 7 4 5 6 7 8;
   1 2 3 4 5 6 7 8 9 10]
out = conv2(A,ones(3,3)./9,'same')
This will give you the average of all 9 neighboring values. Second row:
out(2,:)
ans =
Columns 1 through 10
    1.4444    2.5556    3.3333    4.5556    5.2222    5.7778    6.3333    7.3333    8.3333    5.8889
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