[GRASS-user] Re: stream network extraction

[Margherita Di Leo]

Thank you for your work, Markus, it's wonderful :)

Best,

Margherita


> Hi all,
>
> in grass-addons is a new module for clean stream network extraction from
> flow accumulation. It can extract streams from accumulation maps
> generated with any method (D8, FD8, D-Inf, DEMON, etc) and any software,
> granted that exactly the same elevation map is provided that was used to
> calculate flow accumulation. In case of r.terraflow, that would be the
> flooded (filled) output elevation map, not the elevation map used as
> input for r.terraflow. For e.g. TAS flow accumulation as input, it must
> be the elevation map used within TAS to calculate flow accumulation.
>
> r.stream.extract output is available as raster and vector with unique
> stream IDs. The vector is a complete network with stream segments and
> points for stream heads, confluences and outlets. The raster output can
> be used as input for the r.stream.* modules of Jarek, also in grass-addons.
>
> Regards,
>
> Markus M
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-user/attachments/20090928/43fbbe2b/attachment.html