Polygon buffer?

[Sievers, Jason]

I want to perform a buffer query around a polygon.  I would select a
polygon, then get features from another layer who are within a specified
distance of the outside edge of my selected polygon.  The only queries
involving buffers I see in the documentation are on points.  I have looked
briefly at PostGIS and GRASS documentation.  Is the solution possible in
MapServer? or should I investigate PostGIS, GRASS, or other tools?

Thanks for any help.


Jason Sievers
jsievers at co.linn.or.us
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