[Gdal-dev] adding gcp's

Bart van den Eijnden bartvde at xs4all.nl
Tue Aug 23 13:47:07 EDT 2005


Hi Frank,

so will this generated file work with Mapserver (my experience is that it  
would not show up with Mapserver)?

Is the only way to work around it add a tfw or TAB file?

Best regards,
Bart

On Tue, 23 Aug 2005 17:50:47 +0200, Frank Warmerdam <fwarmerdam at gmail.com>  
wrote:

> On 8/23/05, Bart van den Eijnden <BEN at syncera-itsolutions.nl> wrote:
>> Hi list,
>>
>> I am trying to create a geotiff and add ground control points to it,  
>> using the following command:
>>
>> gdal_translate ondergrond.tif ondergrond_new.tif -gcp 0 0 63978 458335  
>> -gcp 1290 1619 85630 438699
>>
>> When I do gdalinfo, the gcp's are added, but the corner info is not  
>> using it:
>
> Bart,
>
> A review of the gdalinfo code shows that it does not try and
> use GCPs for computing georefencing.  It will only use a
> geotransform (if available).
>
> Sorry...
>
> Best regards,



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