Dear,
In order to perform (shortest path) network analysis, how can I specify that
the crossing of 2 lines in a roadmap is not an intersection but a tunnel/bridge
(impossible to turn left or right)?
Is v.digit the right way to do this (deleting en changing lines/vertices)?
Robbie
If the bridge and tunnel are valid route options, can you remove the node and make them topologically incorrect? Meaning, crossing lines with no node intersection so there is no option to turn. I’m not sure if module needs topologically correct lines/network.
Alternatively, if the bridge or tunnel is not a valid route, can you break the network connection by creating a gap in the line/network for either the bridge or tunnel so one route is not an option?
Mark
On Apr 29, 2010, at 3:51 PM, Robbie Heremans <robbie.heremans@gmail.com> wrote:
Dear,
In order to perform (shortest path) network analysis, how can I specify that
the crossing of 2 lines in a roadmap is not an intersection but a tunnel/bridge
(impossible to turn left or right)?Is v.digit the right way to do this (deleting en changing lines/vertices)?
Robbie
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