Finding neighbours of an element in a matrix

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Bharathwaj
Bharathwaj 2012-2-13
Suppose that i have an element in a matrix and i need to find its neighbors and the distance of the neighbors...
i want to repeat this process for all elements in the matrix..
  2 个评论
Michael
Michael 2012-2-13
can you define what you mean by "distance"? Each element would have four neighbours each with distance 1. Is the matrix sparse?
Bharathwaj
Bharathwaj 2012-2-13
actually..i have a surface containing paraboloids of different widths/sizes..i need to compute the distance between the centres of the paraboloids. A paraboloid might have 3 , 5 or 8 neighbours depending on where the paraboloid is located.

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回答（1 个）

Andrei Bobrov
Andrei Bobrov 2012-2-13
please try this is function
OR
here

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