[postgis-users] pgrouting 0.7 and a*

Pedro Doria Meunier pdoria at netmadeira.com
Sun Nov 5 09:29:47 PST 2006


I'm *very* interested in this!!! where can I get the module?


On Sun, 2006-11-05 at 19:16 +0200, Ville Antti Ensio Leinonen wrote:
> Hi. Im working with routing. I allready have tryed with pgdijsktra module 
> and that worked somewhat right, now i found pgrouting 0.9.7 module. I got 
> dijkstra to works sameway as in pgdijsktra, but i cant find any howto or 
> tutorial to get A* work.
> for dijkstra i have
> l table with data
> l.edges has id,source,targer,cost,reverse_cost
> l.vertices has id,the_geom
> works fine after little modification to _internal_id() function, and 
> actually looks like pgrouting works better that pgdijkstra when using 
> dijsktra.
> Now what i need to do to get A* work, i assume that i need x1,x2,y1,y2 
> columns to l.edges table? but what data and how i populate those values?
> maybe something to do with long/lat?
> shortest_astar_path_as_geometry('l', source_id, target_id, delta);
> And what is delta, README.INSTALL file dosen't talk to me.
> Thanks You for help
> ---------------------------------
>   --	Ville Leinonen		 --
> ----------------------------------
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