[GRASS-user] RE: 3D Streets Data
Matthew Pulis
mpulis at gmail.com
Thu Jan 10 14:26:30 EST 2008
Hi again,
I am really sorry I am sending again but I have tried to read many documents
on how to use v.drape all gave me the same conclusions I did here.
Is there some extra information you might require that I make available in
order to get some knowledge on this situation please?
Also anyone can suggest how I can work out my problem without using v.drape
please?
Thanks again J
Matthew
From: Matthew Pulis [mailto:mpulis at gmail.com]
Sent: Saturday, January 05, 2008 6:33 PM
To: 'grass-user at lists.osgeo.org'
Subject: 3D Streets Data
Hi,
First of all Happy New Year to all on the list J
I am trying to build a 3D Street Network, thus where the streets have
elevation so I can do routing depending on slope level.
I am using the GRASS Book Dataset of North Carolina.
I tried to combine : streets_wake and elev_state_500m layers together, using
the v.drape :
v.drape in=streets_wake rast=elev_state_500m method=bilinear out=streets3d
But to no avail. This is the v.info on streets3d :
| Number of lines: 49746 Number of islands: 0
|
| Number of boundaries: 0 Number of faces: 0
|
| Number of centroids: 0 Number of kernels: 0
|
|
|
| Map is 3D: 1
|
| Number of dblinks: 1
|
|
|
| Projection: Lambert Conformal Conic
|
| N: 258102.57210146 S: 196653.34855345
|
| E: 676816.24830376 W: 610869.3848495
|
| B: 49.16141063 T: 156.87280191
|
The result of streets3d ended up exactly as streets_wake without any
altitude data.
Any idea how I can do this endeavour please? I am planning the dataset for
routing using pGRouting afterwards.
Thanks and regards
Matthew
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