routing

[Daniel]

When we decided to add a routing extension to Postgresql, we tried 
several libraries, including dglib.
The boost library was found more efficient, and more flexible.
DGLib is used  by Grass

Daniel FAIVRE

Paolo Cavallini wrote:

>Thanks to all who responded. Quite reassuring to see that the solution I had 
>in mind are those you suggested. 
>I never used the pg module; is it possible to define only one start and end 
>point, or can I select multiple points?
>I have cursorily read the README, but could not find it.
>As Stephan pointed out, I would be inclined towards GRASS, but the database 
>approach seems more compact. Anybody has tried both methods, and can 
>arguments about respective merits?
>Again, many thanks.
>pc
>
>At 12:40, mercoledì 21 settembre 2005, Norman Barker has probably written:
>  
>
>>-----Original Message-----
>>Paolo,
>>
>>there is a brillant postgres extension called "pgdijkstra" from
>>camp2camp. You need postgres 8.0. It delivers an algorythm for
>>calculating the shortest path - you also may alter this by other
>>attributes, because you are in the database.
>>
>>It's a horror to get the first data into the db (I can help) - if once
>>done it is quite easy and afterwards it's easy to handle.
>>
>>Till
>>    
>>
>
>  
>

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