[GRASS-user] help, interpolation of vector results in one value?

MS mseibel at gmail.com
Sat Jan 9 14:41:46 EST 2010

Is your region set to the extent of the vector points?

Is the right attribute column being spicified to interpolate?


On Jan 9, 2010, at 2:34 PM, James Kebinger <jkebinger at gmail.com> wrote:

> Hello, I've imported a vector of points into GRASS - it's  
> approximately a grid with ~24k points according to GRASS. I'm trying  
> to interpolate it, but what ever methods I try (v.surf.idw or  
> v.surf.bspline), the resulting raster is just one point,  
> approximately in the middle of the grid with the average value of  
> the z values.
> I am able to see the points rendered as a vector field, so the data  
> looks like it's been imported correctly, but I can't figure out this  
> interpolation step.
> Thanks!
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