[GRASS-dev] Re: [GRASS-user] Line of sight and r.cva

IMHO, r.cva is a good candidate to consider for the regular GRASS
distribution. According to Benjamin Ducke (who built on Mark Lake's original
code to bring this to GRASS 6), it could use some optimization improvements
because it is VERY slow at times.

Michael

On 6/28/07 7:16 AM, "Silvia Franceschi" <silvia.franceschi@ing.unitn.it>
wrote:

Thanks Markus, you're right... :slight_smile:
I hope next time I'll check better in all the available documentation.

Only one question... in the package r.cva I downloaded there are no
instruction to install it...
Is it possible to copy only the binary command in my commands directory
and use it?

Ciao

Silvia

Silvia Franceschi wrote on 06/27/2007 12:30 PM:
  

Hi all,
I am trying to use r.los and have a problem, I looked in the
documentation but no answer,
    

Hi silvia,

the last chance is always the user forum *archive* :slight_smile:

so I'll ask the list if anyone knows if r.los takes into account of
the terrestrial curvature?
    

No, but:
http://www.nabble.com/forum/Search.jtp?forum=1200&local=y&query=r.los+curvatu
re

ciao
Markus

------------------
ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
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Michael Barton wrote:

IMHO, r.cva is a good candidate to consider for the regular GRASS
distribution. According to Benjamin Ducke (who built on Mark Lake's
original code to bring this to GRASS 6), it could use some
optimization improvements because it is VERY slow at times.

yes, but IIRC the author has copyright problems from his university
which wouldn't let him release it as GPL. Otherwise it would have
replaced r.los a long time ago. IIRC2 as mentioned in the Google SOC
project thread that even with the r.cva improvements the base r.los
algorithm is badly inefficient, and could be implemented a lot better.

Hamish