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From: Vinod on 5 Mar 2010 03:15
Hello Friends,

I am looking for some guidance in radial gradients.

consider a matrix

x = [1 2 3 4 5;
11 12 13 14 15;
21 22 23 24 25;
31 32 33 34 35;
41 42 43 44 45;
51 52 53 54 55];

Gradient of the 1st row is 2-1,3-2,4-3,5-4...etc and so on and so forth for the columns as well.
But, how do I calculate the radial gradients?. Is the reference point the centre of the matrix (in this case point 3,3)?

Regards,
Vinod Karuvat.
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