Re[2]: [Qgis-user] road graph plugin: no starting point?

[Sergey Yakushev]

> I see. Now I understand better which values to set to make it work when it
> complains "Can't find path".
> 
> How do you fix "Start point no on the road"? Is it always because of CRS
> troubles (layer CRS doesn't equal project CRS)?

Only if 'on the fly transformation' disabled. But Road graph plugin hasother problem (Any people talk about it). I need example project anddata set to fix it.

> Is this confirmed? Why is it a pain? Can something be done for it?
> 
> 
> With Sergey's new information, I was able to make it work for other CRS too.
> The painful means that I sometimes still get "Start point no on the road".
> I'm not completely sure yet what causes it. 

> Another problem is that it gets
> very slow for city-wide (Vienna in my case) road networks. But that's
> because it has to build the topology I guess.

Yes. 99.9% time it is build topology. I not use topology cache in this step. It can create poorly reproducible bugs.

> 
> Best wishes,
> Anita
> 
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user

--
С уважением Якушев Сергей yakushevs at list.ru
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20110506/47538324/attachment.html>