[GRASS-user] i.atcorr whit Aster Data - null value - WARNING: Unknown atmospheric model!....
gis.gn at libero.it
Mon Jul 13 04:58:27 PDT 2015
I have a problem with i.atcorr with data aster. I tried it with grass 64
and 7, on ubuntu 15.04 64-bit.
Maybe I'm wrong to set the parameters of the txt? (Is there anyone can tell
me if they are correct? I have attached the file .met)...Otherwise I do not
/10 - geometrical conditions=ASTER
01 16 15.28 -74.9 -14.8 - month day hh.ddd longitude latitude ("hh.ddd"
is in GMT decimal hours)
2 - atmospheric mode=midlatitude summer
1 - aerosols model=continental
15 - visibility [km] (aerosol model concentration)
-0.121 - mean target elevation above sea level [km]
-1000 - sensor on board a satellite
72 - aster band 1 (0.480-0.645) /
The result I get is always with null values.
/ | Total Cells: 27293388
| Projection: UTM (zone 18)
| N: -1605247.26436317 S: -1678867.26436317 Res: 15
| E: 552980.14168175 W: 469565.14168175 Res: 15
| Range of data: min = -nan max = -nan
In the output window:
wavelength less than 0.25 micron:
let's take s(l)=s(0.25)
WARNING: Unknown atmospheric model!
WARNING: Unknown aerosol model!/
Only in some cases there is a warning wavelength.
Here there is the file .met
I've seen other threads such as Yann but I did not understand the problem
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