[Numpy-discussion] Adjacent matrix

Luis Pedro Coelho lpc@cmu....
Tue Jun 14 06:06:02 CDT 2011


On Monday, June 13, 2011 03:55:46 PM Thiago Franco Moraes wrote:
> "Find all of the grid points in that lie adjacent to one or more grid
> points of opposite values."
> 
> This is the code used to calculate that matrix:
[spin]
> Where nx, ny and nz are the x, y, z dimensions from the "im" input
> binary matrix. I think this operation is called bwperim.

My package, mahotas, supports it directly:

mahotas.bwperim(bw, n)

at
http://packages.python.org/mahotas/

HTH,
Luis
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