Hi,
I've tried all the resampling methods and all of them produce a gridded
pattern. Is there any other way of reprojecting the data using gdal?
Cheers,
Ramiro
On 11/25/2015 04:32 PM, Even Rouault wrote:
Le mercredi 25 novembre 2015 16:16:17, Ramiro Marco Figuera a écrit :
Hi all,
I noticed a curious gridded pattern when using gdalwarp to reproject. I
am reprojecting some lunar south polar DEMs in stereographic projection
to gnomonic projection. I am using the following command: gdalwarp
-t_srs '+proj=gnom +lat_0=-90 +lon_0=0 +x_0=0 +y_0=0 +a=1737400
+b=1737400 +units=m +no_defs ' topo_stereo.tif topo_gnom.tif
The default resampling of gdalwarp is nearest neighbour. Perhaps try something
more advanced like -r bilinear or -r cubic ?
When I create a hillshaded map using gdaldem hillshade I can see a
gridded pattern. I did a hillshaded map with the original map and the
grid is no there. Am I making a mistake when reprojecting or is that a
bug? I can provide images if necessary.
Cheers,
Ramiro
--
Ramiro Marco Figuera
Research Associate - PhD Student
Department of Physics and Earth Sciences
Jacobs University Bremen
Campus Ring 1, 28759 Bremen, Germany
Office: Research III, Room 99b
Tel: +49 (0)421 200 3226
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