[postgis-users] Calculating Attributes

[Aurora Geomatics]

Hello PostGIS users,

I have just installed William Kyng's PostgeSQ/PostGIS packages for Mac  
OS X.5

I have been playing with pgAdmin and QGIS with importing shapefiles  
into PostGIS.  Works dandy.

Now I am wondering how to solve Attribute Calculations.

Years of using ArcGIS and GRASS it is pretty straightforward on those  
apps, and am stumped with PostGIS Attribute calculations..

For example, using a polygon feature;

Creating a new column, say AREA and filling with a calculation that is  
Hectares.

Thanks!