[GRASS-user] Problems using i.worldview.toar

William Hudspeth bhudspeth at edac.unm.edu
Fri Sep 9 08:45:40 PDT 2016


Nikos.

On 09/09/2016 01:37 AM, Nikos Alexandris wrote:
> William Hudspeth:
>
>> I am using i.worldview.toar with the latest version of GRASS 7.3. I was
>> able to successfully download and install this extension. I have tried
>> using the module with the following input and error. All of the input
>> files exist, and I get an error stating that "No data base element files
>> found". Help appreciated...
>>
>> i.worldview.toar 
>> band=worldview2_b1_RED at worldview2,worldview2_b2_GREEN at worldview2,worldview2_b3_BLUE at worldview2,worldview2_b4_NIR at worldview2 
>> outputsuffix=toar utc=2010-04-11T18:07:06.558405Z doy=101 sea=60.3
>
> Do you really need the 'worldview2' prefix for your band names? It's
> identical to your Mapset's name. This is what a mapset is meant (or can
> be used) for: a set of maps.  In this case, it's a set of 'worldview2'
> "maps".
>
>
> Would you rename your bands and try again?
>
> i.worldview.toar band=b1_RED,b2_GREEN,b3_BLUE,b4_NIR outputsuffix=toar 
> utc=2010-04-11T18:07:06.558405Z doy=101 sea=60.3
>
> Nikos
>
> [rest deleted]

I have given the bands simpler names, have re-run i.worldview.toar, and 
am getting the same error:

i.worldview.toar 
band=b1_red at worldview2,b2_green at worldview2,b3_blue at worldview2,b4_nir at worldview2 
outputsuffix=toar utc=2010-04-11T18:07:06.558405Z doy=101 sea=60.3
|! Using Day of Year to calculate Earth-Sun distance.

|! Region matching the b1_red at worldview2 spectral band

|* Processing the b1_red at worldview2 band
Traceback (most recent call last):
   File
"/home/wilbur/.grass7/addons/scripts/i.worldview.toar", line
416, in <module>
     sys.exit(main())
   File
"/home/wilbur/.grass7/addons/scripts/i.worldview.toar", line
320, in main
     acf = float(CF_BW_ESUN[band][2])
KeyError: 'b1_red'
WARNING: No data base element files found

Thank you

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