Hi I am working on a urban stormwater pollution model which I intend to base on r.sim.water and r.sim.sediment. Part of the requirements of this model is that is should accommodate pipe flow. It seems that the best way of implementing this is to modify r.sim.water to route flow though a vector pipe network, using simple flow equations. The way it would work is that as r.sim.water calculates the flow across the surface, when it reaches a cell which contains a pipe inlet, it diverts a certain amount of water to the pipe (removing it from the surface flow). Similarly, at the network outlet, the flow from the pipe is added to the suface flow of the cell in which the outlet occurs. Where I am struggling slightly is figuring out how to create the relationship between the surface (raster) and the pipes (vector). So far the best option I have thought of is to generate a second raster with values at the inlet and outlet cells linking to the pipe reference.
Can anyone comment on this, or suggest a better way of doing it? David _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
