[postgis-devel] Re: [postgis-users] create tables smarter

Markus Schaber schabi at logix-tt.com
Thu Jun 5 02:21:09 PDT 2008


Hi, Kevin,

Kevin Neufeld <kneufeld at refractions.net> wrote:

> I think there are actually 4 dimensions now. X,Y,Z,and M.  There once 
> was talk of working towards having N dimensions.  Do we still want to go 
> there?  In which case, I would recommend that, for now, we use 4-5 bits 
> for COORD_DIMENSION and 20-21 for SRID.

I don't know the exact use cases, but for me personally, even M is a
misuse of the model - Measures belong into their own row in the table,
not mangled into a coordinate.

Regards,
Markus

-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

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