Hi,<br>the latest arc-GIS has this, agreed. But how to build a query in PostGIS for<br>similar results.We want to use this in an urban GIS we are making for an India city.<br>Cheers<br>Ravi Kumar<br><br><br><b><i>P Kishor <punkish@eidesis.org></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> On 8/25/07, RAVI KUMAR <ravivundavalli@yahoo.com> wrote:<br>> Hi,<br>> planning to locate fire stations in an urban area.<br>> 1. Each fire station will have to cover 10 km from its location.<br>> 2. Other fire stations to be placed to reduce duplication and the entire<br>> town is<br>> within -10km- for an emergency call.<br>><br>> Please suggest 'postgis query', on a line network of roads for the town.<br>><br><br><br>I am not sure a "postgis query" will cut it here. Google for<br>"location-allocation," especially for papers by Densham and Rushton.<br>Almost 15 years ago
I helped with something like this using PC<br>Arc/Info (yes, indeed). It was Densham's work, which, I believe,<br>eventually became a part of Arc/Info.<br><br><br>-- <br>Puneet Kishor http://punkish.eidesis.org/<br>Nelson Inst. for Env. Studies http://www.nelson.wisc.edu/<br>Open Source Geospatial Foundation http://www.osgeo.org/<br>2007 Summer S&T Policy Fellow, The National Academies http://www.nas.edu/<br>==========================================================<br>collaborate, communicate, compete<br>==========================================================<br>_______________________________________________<br>postgis-users mailing list<br>postgis-users@postgis.refractions.net<br>http://postgis.refractions.net/mailman/listinfo/postgis-users<br></ravivundavalli@yahoo.com></blockquote><br><p>
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