[GRASS-user] r.slope.aspect: Unexpected Results

Glynn Clements glynn at gclements.plus.com
Wed Jan 27 04:16:18 EST 2010


Rich Shepard wrote:

> > It's possible that the cropping may have changed the grid slightly.
> 
> Glynn,
> 
>    I do hope it's something simple. I can't do more until I have a good DEM
> map for the project area.
> 
> > What are the grid parameters (bounds, resolution, rows/cols) for the
> > source map and the cropped version?
> 
> Source map (demNW raster map):

> nsres:      32.82281055
> ewres:      32.82281055

>    Resolution in feet.
> 
> Cropped map (abernethy vector boundary map):

> nsres:      4.99982001
> ewres:      4.99979979

>    Resolution in metres.

32.82281055 international feet is 10.00439265564 metres.

32.82281055 US survey feet is 10.00441266446533 metres.

-- 
Glynn Clements <glynn at gclements.plus.com>


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