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Nearest neighbors [message #68252]

Wed, 07 October 2009 17:01

N. Johnson
Messages: 2
Registered: October 2009

Junior Member

I have a set of latitude/longitude pairs and I need to find the n
closest neighbors for all of them. I'm trying to use the
nearest_neighbors() function found on this page:
http://www.dfanning.com/code_tips/slowloops.html

However, when I attempt to run the function, I get an error on the
line:
p=c[c[point]:c[point+1]-1] ;start with this point's DT neighbors

because c[point] is equal to c[point+1]. Since I don't know exactly
what the function is doing, I don't know how to fix it. If it matters,
I have a lot of lat/lon pairs (~1e6) and there may be duplicates.

Any suggestions?
Nathan Johnson

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