Re: i.atcorr with Sentinel2

Hi Stefan

I tried with your data, and it works for me.

Check the output here:
http://www.scientificpubs.com/data_share/s2a_b8_corr.tif.tar.gz

I am running it in Ubuntu 16.04, and GRASS latest trunk version, inside a
EPSG:25833 location.

I will send you the other clipped data from my study area, shortly.

Regards

Sajid


On Tue, Dec 19, 2017 at 3:31 PM, Stefan Blumentrath <
[email protected]> wrote:

> Forgot to mention, my test data is tiny (< 3MB)…
>
>
>
> *From:* grass-user [mailto:[email protected]] *On Behalf
> Of *Stefan Blumentrath
> *Sent:* tirsdag 19. desember 2017 15.24
> *To:* Sajid Pareeth <[email protected]>
> *Cc:* GRASS user list <[email protected]>
>
> *Subject:* Re: [GRASS-user] i.atcorr with Sentinel2
>
>
>
> Dear Sajid,
>
>
>
> Thanks so much for your reply and confirming that the module works in
> principle!
>
>
>
> Would you be able to provide me with the 1000 X 1000 clip of your data, so
> I can check if it is my installation?
>
>
>
> I tried also two different boxes and GRASS versions (Ubunut 14.04 with
> GRASS 7.3 and 7.4 compiled from source and Ubuntu 16.04 with GRASS 7.4 from
> UbuntuGIS) and none of it worked.
>
> Also, altering the terrain model from floating point with negative values
> to integer without negative values did not change a thing…
>
> I still get only NULL pixels…
>
>
>
> In case someone would be willing to test my data (which I would be very
> grateful for), you can get it directly here:
>
> dem: http://www.filedropper.com/dem_1
>
> S2 band 8: http://www.filedropper.com/s2aoperprdmsil1cpdmc20160907t0
> 44118r008v20160905t10402220160905t104245b08
>
> 62 params: http://www.filedropper.com/p6s
>
> I also have it on FTP and can share username and password offlist…
>
>
>
> Cheers
>
> Stefan
>
>
>
> *From:* Sajid Pareeth [mailto:[email protected] <[email protected]>]
> *Sent:* tirsdag 19. desember 2017 12.51
> *To:* Stefan Blumentrath <[email protected]>
> *Cc:* Moritz Lennert <[email protected]>; Žofie Cimburová <
> [email protected]>; GRASS user list <[email protected]>
> *Subject:* Re: [GRASS-user] i.atcorr with Sentinel2
>
>
>
> To add, I have used the input as such with out applying the quantification
> value.
>
>
>
> >>
> >>          ----------------------------------------
> >>          6s file:
> >>          25- geometrical conditions=Sentinel-2A
> >>          9 5 10.6728 10.73413 59.90647- month day hh.ddd longitude
> latitude
> >>          4 - atmospheric model=subarctic summer
> >>          3- aerosol model=urban
> >>          50- visibility [km] (aerosol model concentration) (this is
> >>          estimated, I also tried with AOD specified)
> >>          -0.055- mean target elevation above sea level [km]
> >>          -1000- sensor height
> >>          166- Sentinel2A Blue band B2 (440nm - 535nm)
>
>
>
> Just noticed, the last parameter should be 167 for Sentinel B2.
>
>
>
> Sajid
>
>
>
>
>

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