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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