[postgis-devel] GIS problem

zhang Jackie jackieict at gmail.com
Thu Dec 14 00:30:53 PST 2006

not exactly. My problem is about behaviour of human. When some person use a
GIS application, do behavour of  person have laws. and when their operation
in GIS application is mapped to spatial computing :interset , contains ,
distance, ...defined by OpenGIS, Do same computing operation on same spatial
object is performed regularly, and then I can cache the result of these
computing operations.

2006/12/14, Craig Miller <craig.miller at spatialminds.com>:
> Are you simply trying to prove Waldo Toblers' First Law of Geography,
> "Everything is related to everything else, but near things are more
> related
> than distant things."?
> http://en.wikipedia.org/wiki/First_law_of_geography
> --Craig
> ________________________________
>        From: postgis-devel-bounces at postgis.refractions.net
> [mailto:postgis-devel-bounces at postgis.refractions.net] On Behalf Of zhang
> Jackie
>        Sent: Wednesday, December 13, 2006 11:15 PM
>        To: postgis-devel at postgis.refractions.net
>        Subject: [postgis-devel] GIS problem
>        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
> trace and I use it to confirm it.
>        bless you!
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