[R] How to sample x-y coordinates from GIS files

From: Kum-Hoe Hwang <phdhwang_at_gmail.com>
Date: Wed 06 Jul 2005 - 22:14:08 EST


Hi Gurus!
 I have a job that is to get randomly samples from point-based GIS data (sp called shape GIS files) under the total sum resctricted.  For example, I would like to take random smaples under the 1000 persons in each city.
The randomly sampled persons should not be over 1000 any case.  Thank you in advance,

-- 
Kum-Hoe Hwang, Ph.D.

Phone : 82-31-250-3283
Email : phdhwang@gmail.com

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Received on Wed Jul 06 22:18:17 2005

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