[postgis-users] What dimension number should be used when using AddGeometryColumn?

[Sandro Santilli]

On Tue, Sep 27, 2011 at 09:08:35AM -0600, Kenneth Xu wrote:

> The PostGIS document says the dimension number can be 2, 3, 4.
> 2 is for 2D like Point(x,y).
>  
> If I want to create a table for pointm (x,y,m), what number should be used? 2, or 3?
> If I want to create a table for point (x,y,z), what dimension number should be used? 3?

You use dimension number 3 for both, and the type would distinguish
(eg: POINT vs POINTM)

--strk;

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