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st: RE: AW: data points within radius?

From   "Nick Cox" <>
To   <>
Subject   st: RE: AW: data points within radius?
Date   Tue, 7 Jul 2009 14:39:31 +0100

Thanks for the plug, but I think this deals with quite different issues.


Martin Weiss

Maybe this FAQ by NJC gives you some hints:

David Torres

I have two datasets that were nonmatch merged and I need to get the  
number of data points of the using data set that are within various  
radii of each of the unique levels of the master data set.  To be  
clear, both data sets have longitude and latitude coordinates in  
decimal degrees.  Now, I have tried the -circnum- user-created  
command, but I think it only calculates points within radius of one  
pair of coordinates.  I need something a little more sophisticated.

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