[GRASS-user] Draping of Raster images

[Benjamin Ducke]

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"<razmjooeis at faunalia.co.uk>
> To: "Anna Hodgkinson"<anna.hodgkinson at thehumanjourney.net>
> Cc: "Saber Razmjooei"<razmjooeis at faunalia.co.uk>, "grass-user grass-user"<grass-user at lists.osgeo.org>
> 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"<razmjooeis at faunalia.co.uk>
>> To: "Anna Hodgkinson"<anna.hodgkinson at thehumanjourney.net>
>> Cc: grass-user at lists.osgeo.org
>> 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
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-- 
Benjamin Ducke
{*} Geospatial Consultant
{*} GIS Developer

   benducke at fastmail.fm