Hi Norman,

I haven't heard about gdal vrt yet, So I search it and try to understand. I try 
your advice and It works as you said :)
Thanks so much your awesome help. 

And I want to ask you another question. I have a satellite data which I 
download from http://glcfapp.umiacs.umd.edu:8080/esdi/index.jsp . This data 
have four band. And I have all these band part. So I want to collect them in 
single tiff file. Which command I should use? I am new in using gdal utilities.

Thanks.

ÜMİT UZUN

----------------------------------------
> From: [EMAIL PROTECTED]
> To: [email protected]
> Date: Tue, 18 Mar 2008 13:17:43 -0400
> Subject: Re: [osg-users] Earth Model with height relief (BlueMarble)
> 
>  
> 
>> -----Original Message-----
>> From: [EMAIL PROTECTED] 
>> [mailto:[EMAIL PROTECTED] On Behalf 
>> Of ümit uzun
>> Sent: Tuesday, March 18, 2008 12:57 PM
>> To: OpenSceneGraph Users
>> Subject: Re: [osg-users] Earth Model with height relief (BlueMarble)
>> 
>> 
>> 
>> Hi Robert,
>> 
>> I am so sorry for writing wrong command. Actually I used to 
>> -d parameter in ;
>> 
>> //run the build.source
>> osgdem -s build.source --whole-globe -d topo.tif -v 1000.0 -l 4 
>> 
>> command.But I forgot typing this detail. 
>> I think my topo.tif hasn't georeference information in it. 
>> How can I get whole earth height relief data (for example as 
>> 10 km / pixel ) which has georefence information in it?
>> Could you suggest me a web site?
> 
> You need to add georeferencing to your topo.tif 
> Probably easiest using GDAL's vrt format
> http://www.gdal.org/gdal_vrttut.html
> 
> 
> I think this will do it
> 
> 
>   WGS84
>  
> -180,0.016666666666666666,0,90,0,-0.016666666666666666 nsform>
>    
>    Gray
>     
>       topo.tif 
>       1
>       
>       
>     
>   
> 
> 
> 
> 
>> 
>> Thanks for all your advice;
>> 
>> ÜMİT UZUN
>> 
>> ----------------------------------------
>>> Date: Tue, 18 Mar 2008 16:31:03 +0000
>>> From: [EMAIL PROTECTED]
>>> To: [email protected]
>>> Subject: Re: [osg-users] Earth Model with height relief (BlueMarble)
>>> 
>>> Hi Umit,
>>> 
>>> Try add a -d in from of the DEM file. i.e
>>> 
>>>    osgdem -s build.source --whole-globe -d topo.tif
>>> 
>>> For -l 4 you'll find that you want see an terrain.  I'd 
>> also recommend
>>> using --terrain as the build is well over a hundred times faster.
>>> 
>>> Robert.
>>> 
>>> On Tue, Mar 18, 2008 at 4:11 PM, ümit uzun  wrote:
>>>>
>>>>  Hi All.
>>>>
>>>>  I try to make earth model with height relief. I am using 
>> this command on Ubuntu 7.10, OpenSceneGraph Library 2.3.4 and 
>> VirtualPlanetBuilder/osgdem 0.9.5 ;
>>>>
>>>>  // Create the build.source file
>>>>  osgdem --bluemarble-west -t ../land_shallow_topo_west.tif \
>>>>            --bluemarble-east -t ../land_shallow_topo_east.tif \
>>>>            --geocentric \
>>>>            -o earth/earth.ive \
>>>>            --so build.source
>>>>
>>>>  //creating whole earth elevation data subroutines
>>>>  I download  srtm_ramp2.world.21600x10800.jpg from 
>> http://visibleearth.nasa.gov/view_detail.php?id=8391 web 
>> site. Then I use gdal utility commands;
>>>>
>>>>  //traslating jpg to geotiff
>>>>  gdal_translate srtm_ramp2.world.21600x10800.jpg topo.tif
>>>>
>>>>  //adding overview to topo.tif
>>>>  gdaladdo -r average topo.tif 2 4 8 16 32 64 128
>>>>
>>>>  //run the build.source
>>>>  osgdem -s build.source --whole-globe topo.tif -v 1000.0 -l 4
>>>>
>>>>  But when the process finished I see a globe which is not expected.
>>>>  The height relief and the earth lands surface can't 
>> overlap on same coordinate place.
>>>>  what can I do for to create original earth model with 
>> height relief.
>>>>
>>>>  ÜMİT UZUN
>>>>
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