[pgrouting-dev] [pgrouting-users] Dangling sub-networks

[Imre Samu]

> Is there a way to identify (and potentially delete) such minor sub-nets?

IMHO:  this is similar for detecting "Component" (
https://en.wikipedia.org/wiki/Component_(graph_theory) )
Have you checked the
https://docs.pgrouting.org/3.1/en/components-family.html  functions?

If you know the components - you can calculate the aggregated length of
edges for each component.

Regards,
 Imre


Hans Skov-Petersen <hsp at ign.ku.dk> ezt írta (időpont: 2021. jún. 27., V,
21:42):

> Hi list
>
>
>
> I realize that the network (OSM) I am working on is not always connected
> as it should (big surprise J)…. Some parts are disjoint from the rest –
> even when not being situated on islands, or other places where a disjoint
> is expected. Accordingly, routes from nodes on such sub-nets cannot be
> generated.
>
>
>
> Is there a way to identify (and potentially delete) such minor sub-nets?
> For instance by asking for the aggregated length of edges of a sub-net.
>
>
>
>
>
>
>
>
>
> *Hans Skov-Petersen*
>
> Professor of Geoinformatics
>
>
>
> *University of Copenhagen*
>
> Department of Geosciences and Natural Resource Management
>
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