My problem is as follows.
To start with, I have the following spatial datasets:
- A road network;
- 13,000 odd point locations representing populated localities (ie places where people live);
- Service (point) locations (2000+) representing the location of a specific human service;
For each populated locality (origins), I need to find the network distance to the 5 nearest service locations (destinations), and record those 5 distance measures against the originating populated locality.
Software resources available to me include ArcMap (ArcView licence only), Manifold (with Business Tools extension), Quantum GIS, GvSIG.
Any help or suggestions welcome.