On Thu, Jun 28, 2018 at 2:03 PM, Stefan Blumentrath < [email protected]> wrote: > > Just one quick follow up question regarding your wild guess: > > > > With a raster map option, the module would have to make assumptions on units / scale of values in the map (documented in the manual), so in the further process e.g. average or median could be extracted (r.univar) and fed to 6s input file, right?
no, i.atcorr accepts a visibility raster map as input, equivalent to aerosol optical depth at 550nm. Note that internally i.atcorr converts AOD at 550nm to visibility with v = exp(-log(taer55 / 2.7628f) / 0.79902f); Markus M > > > > Cheers > > Stefan > > > > > > From: grass-dev <[email protected]> On Behalf Of Yann Chemin > Sent: torsdag 28. juni 2018 13:38 > To: [email protected] > Cc: Markus Metz <[email protected]>; GRASS-dev < [email protected]>; Roberta Fagandini <[email protected]> > Subject: Re: [GRASS-dev] compile 6S library in GRASS > > > > a wild guess: specify a raster input option for AOT (alongside other options), let user find its image source and use it. > > > > Very limited requirement for the GSoC student, most latitude for the the modules user. > > > > ---------- > Dr. Yann Chemin > > Freelancer > > +33 7 83 85 5234 > > 3 Toulmelin, 56400 Plumergat, FR > > https://www.paypal.me/yannchemin > > > > > > On Thu, 28 Jun 2018 at 13:35, Moritz Lennert <[email protected]> wrote: > > On 28/06/18 12:17, Roberta Fagandini wrote: > > I'm not an expert in MODIS data so if someone wants to give > > suggestions about how to retrieve the AOT from these data, I will > > definitely add this option too. > > I'm not an expert, and MarkusM can probably provide you with more info, > but you can already see https://lpdaac.usgs.gov/node/1265. > > Moritz > > > _______________________________________________ > grass-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-dev
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