Indeed it needs ALL bands. I used this module in class a couple of weeks ago. You need to import and use all bands, including the panchromatic.
Carlos On Tue, Jun 18, 2019 at 9:32 AM Veronica Andreo <[email protected]> wrote: > Seems to me that the module needs all Landsat bands. Try importing all of > them > > Vero > > El lun., 17 jun. 2019 a las 15:54, Gabriel Cotlier (<[email protected]>) > escribió: > >> Dear Vero, Nikos and Markus, >> >> I'm trying to get an NDVI from different preprocessing atmospheric >> correction methods DOS1, DOS2, DOS 2b, DOS3, DOS4. However, unsuccessfully, >> I'm not being able to run my supposed workflow on GRASS GIS which is: >> >> Step 1. DN to TOA Radiance ( *i.landsat.toar*) >> Step 2. TOA Radiance to Land Surface Reflectance (*i.atcorr*) >> >> that thought maybe is the correct workflow for Landdsat 8 Level 1 >> products, maybe is not? >> >> Since I need it only for Band 4 and Band 5 I proceeded as follows: >> >> 1. in a grassdata directory named with the correspondent Landsat 8 scene >> "LC82270832018074LGN00" I put Band 4 and Band 5 together with the MTL >> metadata txt file. >> >> 2. set a "Location" for this data set using Band 4 data by reading >> projection and Datum from Band 4. >> >> 3.started grass gis and d.rast for displaying the already automatically >> loaded Band 4 >> >> 5. import with r.in.gdal Band 5 using Band 5 complete name as was Band 4 >> loaded "LC82270832018074LGN00_B5" >> >> [image: image.png] >> 6. I changed working directory to where the data is: >> >> [image: image.png] >> 7. in command line (the withe one in grass interface) I tried to >> *i.landsat.toar* for obtaining TOA Radiance as follows : >> >> i.landsat.toar -r input=LC82270832018074LGN00_B >> output=TOAR_LC82270832018074LGN00_B metfile=LC82270832018074LGN00_MTL.txt >> sensor=oli8 date=2018-03-15 sun_elevation=45.06637424 >> product_date=2018-03-20 >> >> and the resulting error was: >> >> [image: image.png] >> >> I do not really understand what could be happening related to the bands >> names? >> >> Thanks a lot I will appreciate a way to solve this problem. May target is >> to get finally both bands 4 and 5 radiometrically callibrated and further >> atmospherically corrected with *i.atcorr* using different DOS methos. >> >> Thanks a lot again for the help and guidance. >> >> Gabriel >> >> _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user -- Prof. Carlos Henrique Grohmann Institute of Energy and Environment - Univ. of São Paulo, Brazil - Digital Terrain Analysis | GIS | Remote Sensing - http://carlosgrohmann.com http://orcid.org/0000-0001-5073-5572 ________________ Can’t stop the signal.
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