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

[Kenneth Xu]

Hi,
 
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?

Thanks,

Kenneh Xu
GIS Consultant
www.st-links.com
kenneth.xu at hotmail.com 

 		 	   		  
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