[GRASS-user] R: R: R: R: NULL values as output of i.atcorr

Thank you very much for your support! I will keep you update on my (I hope) progresses! -Messaggio originale- Da: Moritz Lennert Inviato: venerdì 28 gennaio 2022 12:07 A: ilaria.ferrand...@gmail.com; 'Maris Nartiss' Cc: 'GRASS user list' Oggetto: Re: R: R: R: [GRASS-user] NULL values

[GRASS-user] R: R: R: R: NULL values as output of i.atcorr

Thank you very much Vero for your kind answer and for sharing the presentation, which for sure will result very useful! Da: Veronica Andreo Inviato: venerdì 28 gennaio 2022 14:50 A: Moritz Lennert Cc: Pilafin ; Maris Nartiss ; GRASS user list Oggetto: Re: [GRASS-user] R: R: R: NULL

[GRASS-user] R: R: R: NULL values as output of i.atcorr

Thank you Moritz, I will do some research on visibility (aerosol model concentration) to put a reasonable value there (any suggestion is appreciated, also regarding references to look at). How can I transform digital number into radiance/reflectance? Thank you very much for your precious help!

[GRASS-user] R: R: NULL values as output of i.atcorr

The output of r.info is the following r.info map=immagine@mapset ++ | Map: immagine@mapsetDate: Tue Nov 30 12:51:12 2021| | Mapset: mapset Login of

[GRASS-user] R: NULL values as output of i.atcorr

Dear Moritz, thank you for your reply. I tried with and without the -r flag and the results is the same. Please find attached the parameters of the file 22giugno2020_b4.txt: 26 6 22 17.05 9.68728523 43.75514951 2 1 0 -0.293 -1000 182 Best regards, ilaria -Messaggio originale-

[GRASS-user] NULL values as output of i.atcorr

Dear all, I am having troubles in processing a Sentinel-2 image with i.atcorr. The command I use is the following: i.atcorr -r -input=immagine@mapset range=0,1 parameters=C:\...\22giugno2020_b4.txt output=immagine_atcorr rescale=0,1 and I obtain this output: wavelength less than 0.25