You can only drape one raster over another (e.g.
to combine the colour information in an airphoto
with the elevation information in a DEM) in the
context of a visualization software like NVIZ
(which does the same stuff ArcScene does for ArcGIS).
If you want to turn 3D elevation vector points
into a raster with elevation values, use one
of the v.surf.* interpolation modules.
Ben
On 11/03/2011 03:32 PM, Anna Hodgkinson wrote:
Thank you, but neither of those would work for me - what I'm trying to do is to
make a 2D raster image 3D.
And I don't mean visualisation, I mean assigning cell values for elevation from
either another 3D surface or vector layer (both of which I have).
Sorry!
Anna
----- Original Message -----
From: "Saber Razmjooei"<[email protected]>
To: "Anna Hodgkinson"<[email protected]>
Cc: "Saber Razmjooei"<[email protected]>, "grass-user
grass-user"<[email protected]>
Sent: Thursday, 3 November, 2011 2:21:23 PM
Subject: Re: [GRASS-user] Draping of Raster images
Alternatively, you can use:
r.shaded.relied
That will be 2D only.
Thanks, but there doesn't seem to be a way of elevating a 2D raster
surface. Do you have any experience with this, and would know what
command to use?
Many thanks,
Anna
----- Original Message -----
From: "Saber Razmjooei"<[email protected]>
To: "Anna Hodgkinson"<[email protected]>
Cc: [email protected]
Sent: Thursday, 3 November, 2011 1:52:36 PM
Subject: Re: [GRASS-user] Draping of Raster images
This page might be helpful:
http://grass.osgeo.org/wiki/Help_with_3D
Cheers
Saber
Dear all,
I was wondering whether it is possible to use GRASS to drape raster
images over existing 3D surfaces or vector layers.
I know ArcGIS is capable of this, is seems a fairly straight-forward
procedure there
(http://webhelp.esri.com/arcgisdesktop/9.3/tutorials/3D_analyst/3D_5.htm),
so I was hoping to achieve the same using open source GIS.
GRASS has a v.drape module, which can drape vector layers over 3D
surfaces, NVIZ seems to do the same.
It would be great if someone could tell me that GRASS (or any other
open source GIS package) is capable of draping raster images over
either other
rasters or vectors containing elevation information.
Many thanks and all the best,
Anna
______________________________________________ Anna Kathrin
Hodgkinson MA MSt (Oxon) AIFA EES
Supervisor Geomatics
Oxford Archaeology: Exploring the Human Journey
Mobile: +44 (0)7906 638308 (personal)
Direct Dial: +44 (0)1865 980 855
http://thehumanjourney.net
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