[GRASS-user] shifted surfaces - bug in interpolation modules?

[Maciej Sieczka]

Carlos "Guâno" Grohmann wrote:
> Dear list,
> 
> After running some tests to compare different interpolation methods
> (kriging in R, IDW, RST, nnbathy and bsplines), I realized that the
> surfaces produced by GRASS presented a shift to southwest, when
> compared with the surface made with R or ArcGIS. I know that the
> surface that came from R is in the right place, I compared it with the
> original SRTM data.

Carlos,

Interesting.

How did you import the R (sorry, I don't know a thing about the R-GRASS
interface), ArcGIS and the SRTM rasters into GRASS, respectively?

What SRTM tile is it?

What projection are you working in?

What GRASS version?

Maciek