[postgis-users] PgRouting in PostGIS
Anton Patrushev
anton at orkney.co.jp
Tue Sep 23 16:37:21 PDT 2008
Hi,
Of course you can. You can put any float value as a cost. And if a
cost of an edge is high enough comparing to other costs, algorithm
will prefer not to pass through that edge.
Anton.
On 9/24/08, Nandorov <nandorov at gmail.com> wrote:
>
> can i block some segments? for example cad gives the posibility to put a max
> resistance value, let's say it's 100. So if the resistance of your segment
> is 100 that segment is blocked and you cannot go thorught this way. if this
> possible with pgrouting?
>
> thanks!
>
>
>
> Stephen Woodbridge wrote:
> >
> > Nandorov wrote:
> >> hi,
> >> i've tried pgrouting algorithms and works pretty well. However, i dont
> >> know
> >> exactly the way they applied "the resistance" of a way (represented by a
> >> multilinestring). has someone worked with pgrouting before? and know if
> >> i
> >> can modify their algorithms to adapt them to my requirements?
> >>
> >> thanks
> >
> > "the resistance" is applied as a "cost" to traverse the segment. All
> > cost must be positive. You can use length of the segment as cost for
> > shortest distance. or you can compute and assign a cost value based on
> > other attributes.
> >
> > -Steve
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>
>
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