[postgis-users] GIS problem

[Martin Davis]

This sounds like an instance of Tobler's First Law of Geography:

"Everything is related to everything else, but near things are more 
related to each other"

http://en.wikipedia.org/wiki/Waldo_Tobler

zhang Jackie wrote:
> hi,everybody!
>      I was thinking a problem: Is there a rule: the same spatial 
> functions using the same spatial objects are performed regulaly, at 
> least queries from people living  same area will resulted in such 
> scenes.eg <http://scenes.eg>. people in New York will often query area 
> size of someting in New York, and They are also  more interesting in 
> postion relationship of buidings in NewYork. I think this conforms to 
> rule of thumb. But now I hope to approve it with facts. Do you have 
> ever think about this quesiton and have some statistics on such 
> problem. Can you give me some GIS trace and I use it to confirm it.
>  
> bless you!
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-- 
Martin Davis
Senior Technical Architect
Refractions Research, Inc.
(250) 383-3022