[osg-users] vpb and GTOPO30

Rafa Gaitan rafa.gaitan at gmail.com
Mon Sep 1 00:29:10 PDT 2008


Hi Cedrid and Ümit,

Is it possible a bad behaviour with NODATA values?. I have seen some
elevation data files that don't use the standard NODATA value.

Is it possible to use a different NODATA value inside vpb?. Or set a list of
NODATA values?.

Rafa.


On Mon, Sep 1, 2008 at 6:40 AM, Ümit Uzun <umituzun84 at gmail.com> wrote:

> Hi Cedric,
>
> I had same problem before as you see from
> http://article.gmane.org/gmane.comp.graphics.openscenegraph.user/28101/match=gtopo30+umitBut I couldn't any solution to fix the land and water elevation problem. If
> you have any change to use different BlueMarble images and elevation data,
> you can use ftp://veftp.gsfc.nasa.gov/bluemarble/ images and elevations.
> But with using this data you must do some fixes by using gdal_vrt. If you
> will use these data and have any problem about creating whole earth database
> I can help you.
>
> Best Regards.
>
> Ümit Uzun
>
> 2008/8/31 Cedric Pinson <mornifle at plopbyte.net>
>
> here a screenshoot of the issue
>> http://www.plopbyte.net/tmp/Screenshot.jpg
>>
>> Cedric
>>
>>
>> Cedric Pinson wrote:
>>
>>> Hi,
>>>
>>> I generated earth planet with GTOP030 dem files, but when i view the
>>> result i have the sea higher than the land.
>>> Like if the water were not positioned correctly in the dem.
>>> My files are correctly filled with wgs84 and here the osgdem command line
>>> osgdem --TERRAIN --geocentric -t bluemarble_00.tiff -l 3 -d
>>> dems/E020N40.TIF  -d dems/E020N90.TIF -o puget.ive
>>>
>>>
>>> Anyone has already see that with those dem files ?
>>> And if others people has some recommendation about which set of data that
>>> works great.
>>>
>>> Thank you
>>> Cedric
>>>
>>>
>> --
>> +33 (0) 6 63 20 03 56  Cedric Pinson mailto:mornifle at plopbyte.net
>> http://www.plopbyte.net
>>
>>
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>
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-- 
Rafael Gaitán Linares
Instituto de Automática e Informática Industrial http://www.ai2.upv.es
Ciudad Politécnica de la Innovación
Universidad Politécnica de Valencia
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