[R-sig-Geo] georeferencing image from scratch

Loïc Dutrieux loic.dutrieux at wur.nl
Mon Aug 17 16:34:16 CEST 2015


Hi Marcelo,

I don't see anything in raster or rgdal that would do that directly. 
However, this can be done I believe using gdal_translate / gdal_edit 
(for adding the GCPs to the dataset) + gdalwarp (for warping). Both 
gdal_translate and gdalwarp utilities have wrappers in the gdalUtils 
package.

Cheers,
Loïc Dutrieux

On 08/17/2015 11:43 AM, Marcelo Kittlein wrote:
>
> Hi all
>
> I want to change a MSS landsat image which has bad georeferencing.
>
> I have a grid of points with correct georeferences and want to use them
> to reproject the image to a correct reference system.
>
> Is there some way to this in R using "raster" or other package?
>
> in idrisi I used to resample the image using a correspondence file
> (.cor) with xold yold xnew ynew values.
>
> I wonder if there is something similar I can do in R? Thanks in advance
>
> Marcelo Kittlein
>
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