[postgis-devel] GIS problem

[zhang Jackie]

thanks. but I want to have some existing proof to use ,eg. a paper
published, a technique report....



2006/12/14, Markus Schaber <schabi at logix-tt.com>:
>
> Hi, zhang,
>
> "zhang Jackie" <jackieict at gmail.com> wrote:
>
> > 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.
>
> You can simly use some LRU-alike caching scheme, and then you will
> automatically get a very good caching behaviour. And you get the proof
> or disproof of your assumption by looking which operations live long in
> the cache.
>
>
>
> Regards,
> Markus
>
> --
> Markus Schaber | Logical Tracking&Tracing International AG
> Dipl. Inf.     | Software Development GIS
>
> Fight against software patents in Europe! www.ffii.org
> www.nosoftwarepatents.org
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