[GRASS-user] Ussage of new i.* modules in Grass70

[Yann Chemin]

Hi,

i.eb.z0m is producing an estimation of the surface roughness accordingly to
the requirement, unfortunately, I did not have time to move it to the main
trunk, would that be of interest?

Cheers,
Yann

On Thu, Jun 11, 2015 at 2:07 PM Markus Neteler <neteler at osgeo.org> wrote:

> On Thu, Jun 11, 2015 at 10:01 AM, Huub Munstege <hmunstege at yahoo.com>
> wrote:
> > Dear GRASS community,
> >
> > Hello, I am thrilled to find a number of promising modules under
> 'imagery'
> > incorporated in the standard GRASS70 version. Specifically the
> > "evapotranspiration calculation" modules have our special interest.
> Weren't
> > they before addons?
>
> Yes, that is right.
>
> > However I have some troubles to go through the complete calculation. The
> > explanations on the manual pages are very (too) basic.
>
> Agreed - we hope to find volunteers to contribute. But there is a
> starter which may be helpful for you:
>
> Evapotranspiration mapping with Landsat 5TM in GRASS GIS
>
> https://svn.osgeo.org/grass/grass-promo/tutorials/grass_landsat_ETa/main_document.pdf
>
> > For example, I got
> > stuck at the "sensible heat flux calculation" that demands the
> "aerodynamic
> > resistance to the heat momentum". I supposed an average value that I
> found
> > on the web and created with r.mapcalc a raster with that value. But
> finally
> > I got a raster with only 0 values.
> > Would it be possible to create a Wiki for this evaporation module with
> some
> > examples? Or could someone direct me where I can get detailed advice?
>
> A wiki page would be excellent. Feel free to generate it, it is a
> community wiki.
> Searching, I just found this stub page:
>
> http://grasswiki.osgeo.org/wiki/Image_processing/Evapotranspiration
>
> Maybe a good starting point for further editing.
>
> Best
> Markus
>
> --
> http://courses.neteler.org/blog
> http://gis.cri.fmach.it/neteler/
>
>
> > Thanks,
> >
> > Huub
> >
> > Huub Munstege
> > Bamako
> > Rép. du Mali
> >
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-user
>
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