[GRASS-user] new scripts for surface roughness

Carlos "Guâno" Grohmann carlos.grohmann at gmail.com
Mon Aug 20 17:35:46 EDT 2007

Hello all,
I just uploaded two new scripts to GRASS AddOns Wiki page.

r.roughness.window.area - similar to the old one (r.roughness), but
this one uses moving-window instead of "jumping" windows and surface
area is calculated with trigonometry from slope.

r.roughness.window.vector - this one calculates roughness as vector
strength and vector dispersion. There is a provisional help page for
this also. The user can run without optional maps, in which case
several temp maps will be created. If the idea is to calculate a lot
of map (with different neighbourhood sizes, for instance), it is
recommended to create the optional maps first (see help page).

hope it works for you.

have fun!


              Carlos Henrique Grohmann - Guano
  Visiting Researcher at Kingston University London - UK
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
"Good morning, doctors. I have taken the liberty of removing Windows
95 from my hard drive."
--The winning entry in a "What were HAL's first words" contest judged
by 2001: A SPACE ODYSSEY creator Arthur C. Clarke

Can't stop the signal.

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