[postgis-users] 3d Points

[Gerry Creager N5JXS]

Christian,

when you work this out, would you please share with me?

thanks,
gerry

Christian Heine wrote:
> Hi list,
> a newbie needs some advice:
> I want to store min/max z values and their associated lon/lat  obtained 
> from regional grids in a postgis db. The values are spit out  as 
> zmax/zmin (in km, mW/m^2, etc), zmax/zmin_lon, zmax/zmin_lat. As  far as 
> I understand, one has to use GeomFromEWKT here as OpenGIS  formats only 
> support 2d objects.
> Is it advisable to use EWKT or is it better to create an extra z- value 
> column and keep the z-value separated from the lon/lat? Also,  what is 
> the difference between POINTM and POINT? I couldn't find any  
> information explaining the "M".
> 
> Thanks a lot for the help.
> Cheers from Sydney,
> Christian
> 
> -- 
> Christian Heine
> ph.d. student
> 
>         USIMS       |    University of Sydney
>                     |    Institute of Marine Science
>                     |    Sydney, Australia
> 
> P +61 2 9351 4257   •   F +61 2 9351 0184
> 
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
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