The way I approach this is to use MapServer to get the coordinates (or an id of a PostGIS feature) interactively and then connect to PostGIS directly with PHP and pull the information out using their well developed functions, such as: - PolyFromText(...) - Buffer(...) - Intersect(...)
This is one method, there are many others. Aaron On 12/8/06, Sievers, Jason <[EMAIL PROTECTED]> wrote:
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 [EMAIL PROTECTED]
-- +------------------------------------------------- | Aaron Koning | Information Technologist | Prince George, BC, Canada. +------------------------------------------------- | Flexible Internet Spatial Template: | http://fist-mapping.org +-------------------------------------------------
