[postgis-users] pgrouting 0.7 and a*

Sandeep Kumar Jakkaraju sandeepkumar.jakkaraju at gmail.com
Sun Nov 5 09:19:58 PST 2006

I have one query ..how do you test if that pg_routing is giving
correct results or not ??


On 11/5/06, Ville Antti Ensio Leinonen <levian00 at students.oamk.fi> wrote:
Hi. Im working with routing. I allready have tryed with pgdijsktra cmodule

> 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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Sandeep Kumar Jakkaraju
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