[GRASS-user] r.param.scale Incorrect Output

Rich Shepard rshepard at appl-ecosys.com
Thu Jan 28 19:36:23 EST 2010

On Thu, 28 Jan 2010, Dylan Beaudette wrote:

> Are you working with data in a projected coordinate system? Are you x,y
> and z coordinates all in the same units. What is the general nature of the
> terrain you are looking at? Try adjusting the window size to get
> generalized features-- remember that the quantification of terrain is a
> fractal problem.


   All data are Oregon Lambert Conformal Conic. x,y distances are in metres,
z in international feet. I specify the zmult of 0.3048 or the module does
this automatically.

   The drainage basin has an area about 12,000 acres. There are portions of
surrounding basins in the window, but I'm interested only in the one basin.

   The attached screenshot has the DEM, basin boundaries, streams, and other
features too small to see at the reduced scale.

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