[GRASS-user] Openness Calculation

[Rebecca Bennett]

It's an addon to GRASS 7 but I'm not having much success with it this morning as the module doesn't allow you to specify an output raster then fails to run because you haven't specified an output raster... at least in the windows version :)
I can of course use the commandline, I just haven't got round to it yet...

best wishes,
Rebecca





On Wednesday, 6 November 2013, 17:48, Thomas Adams <tea3rd at gmail.com> wrote:
 
Nevermind, I see it now in Helmut's email

On Wednesday, November 6, 2013, Thomas Adams  wrote:

Rebecca,
>
>
>The module I was thinking of is r.param.scale; where are you finding r.geomorphons? I can't find it.
>
>
>Tom
>
>
>
>On Tuesday, November 5, 2013, Rebecca Bennett  wrote:
>
>Thank you everyone for your suggestions and links to further papers (and apologies for the multiple original posts - I think my computer must have been having a moment)
>> 
>>r.geomorphons looks like just the ticket - time to experiment!
>> 
>>Best wishes,
>>Rebecca
>> 
>>
>>
>>
>>On Monday, 4 November 2013, 21:01, Helmut Kudrnovsky <hellik at web.de> wrote:
>> 
>>Rebecca Bennett wrote
>>> Dear GRASS users,
>>>  
>>> I have recently been made aware of the positive and negative openness
>>> vizualisations (Yokoyama et al 2002
>>> http://www.asprs.org/a/publications/pers/2002journal/march/2002_mar_257-265.pdf)
>>> and would like to try to compute them in GRASS to help identify micro
>>> relief.
>>>  
>>> Though I suspect that this has already been done, I can't find a heads up
>>> other than this paper (which claims to have creates the web service based
>>> on GRASS here
>>> http://geobrain.laits.gmu.edu/grassweb/manuals/raster/openness.html)
>>> http://www.lpi.usra.edu/science/stepinskiWebPage/pdfFiles/geoinformaticsConf2009.pdf
>>>  
>>> Just a note that although similar in it's aim of highlighting
>>> microtopography, this is not quite the same as the r.horizon calculation
>>> (image attached for clarification).
>>>  
>>> All the best,
>>> Rebecca
>>> _______________________________________________
>>> grass-user mailing list
>>
>>> grass-user at .osgeo
>>
>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>> 
>>> Openness.png (109K)
>>> <http://osgeo-org.1560.x6.nabble.com/attachment/5087322/0/Openness.png%3E
>>
>>at http://sil.uc.edu/downloads.htmlsee 
>>
>>T.F. Stepinski, and J. Jasiewicz (2011) Geomorphons - A New Approach to
>>Classification of Landforms, in: T. Hengl, I. S. Evans, J. P. Wilson, M.
>>Gould (Eds.), Geomorphometry 2011, pp.
 109-112. paper. Watch a video of an
>>actual presentation of this paper at the Geomorphometry 2011 conference. 
>>
>>there is a nice video that shows their work is based upon Yokoyama et al
>>
>>2002.
>>
>>
>>
>>-----
>>best regards
>>Helmut
>>--
>>View this message in context: http://osgeo-org.1560.x6.nabble.com/Openness-Calculation-tp5087322p5087347.html
>>Sent from the Grass - Users mailing list archive at Nabble.com.
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>>
>
>-- 
>Thomas E Adams, III
>718 McBurney Drive
>Lebanon, OH 45036
>
>
>1 (513) 739-9512 (cell)
>
>
>

-- 
Thomas E Adams, III
718 McBurney Drive
Lebanon, OH 45036

1 (513) 739-9512 (cell)
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