[gdal-dev] Re: Add GCP's to a file

[Kim Besson]

Thanks Mr Paulsen and Jukka

Ok I tried  the command and it seemed to work :) Thanks

By the way, if my image has no Coordinates system and my GCPs corresponds to
a certain projection/coordinate system, How I define now the coordinate
system in which that data is?

Thank you



>
> 2010/2/22 Gaige B. Paulsen <osgeo at gbp.gaige.net>
>
> Pixel and line in the description below are actually two different numbers,
>> one representing the pixel (x coordinate) and the line (y coordinate) of the
>> point in the image.
>>
>> Hope this helps,
>> -Gaige
>>
>>
>> On Feb 22, 2010, at 12:31 PM, Kim Besson wrote:
>>
>> >Hi,
>> >Gdal_translation has on option
>> > [-gcp pixel line easting northing [elevation]]*
>>
>> >I know it works with tiffs but I have not tried it with HDF4. Some
>> working
>> >examples and considerations about this is hidden inside a document
>> >http://www.scangis.org/scangis2007/papers/r3_rahkonen.pdf
>>
>> Thanks Jukka. Although why does it only requires pixel line? The dataset
>> that I'm using, Easthing and Northing varies along pixel line. Shouldn't it
>> be Pixel column and row (or pixel (x,y)?
>>
>> Thanks
>> Kim
>>
>>
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>>
>>
>
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