[GRASS-user] S.K. Jenson and J.O. Domingue (1988) method to filter the elevation map

[Markus Metz]

On Wed, Dec 11, 2019 at 2:16 PM Luis Moreira <lfsmmoreira at gmail.com> wrote:
>
> Hello everyone,
>
> I'd like to know if Grass still uses the S.K. Jenson and J.O. Domingue
> (1988) method to filter the elevation map, in its original conception.
I've
> read about some new and more improved methods and was wondering if there
> wasn't any improvement in Grass method.

r.watershed, available in GRASS since the late 1980's, uses an improved
method that provides more realistic results, especially with regard to
errors in the elevation map. As Stefan Blumentrath mentioned, there are by
now other modules that use the more realistic method of r.watershed,
particularly r.stream.extract and r.hydrodem.

Be aware that r.terraflow still uses the the method of Jenson and Domingue
(1988).

Markus M

>
> Thank you.
>
>
>
> --
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