Thank both of you Dominik and Loïc
alignExtent() did the job after regressing the wright points vs bad
points and predicting a new correct extent. After setting the new
extent, the points match correctly known features of the image.
I would give a try to gdalwarp to add GCPs to the dataset.
On 17/08/15 14:51, Dominik Schneider wrote:
Marcelo,
did you try alignExtent() in the raster package?
Dominik Schneider
o 303.735.6296 | c 518.956.3978
On Mon, Aug 17, 2015 at 8:34 AM, Loïc Dutrieux <[email protected]> wrote:
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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