Search found 306 matches

by fsteinmetz
Mon Aug 21, 2023 1:14 pm
Forum: Support
Topic: Error Processing Landsat-8
Replies: 7
Views: 27877

Re: Error Processing Landsat-8

Hi Sydney,
It is the "l8_angles" command that should be used in the first place to generate the angles files, not polymer_cli.py.
polymer_cli.py should be run afterwards, once the angles file is present.
Cheers,
François
by fsteinmetz
Mon Aug 21, 2023 1:10 pm
Forum: Support
Topic: Landsat 5, 7, and 9?
Replies: 4
Views: 30467

Re: Landsat 5, 7, and 9?

Hello, These sensors are currently not supported. L5 and L7 are not supported and Polymer's applicability to these sensors may be limited due to the available spectral bands. L9 could be supported, and would require the development of a reader. I am currently not planning to work on it in the short ...
by fsteinmetz
Mon Aug 21, 2023 12:59 pm
Forum: Support
Topic: error of processing sentinel-2
Replies: 3
Views: 24519

Re: error of processing sentinel-2

Thanks Tiago, I will check and update the dependencies in next release.
by fsteinmetz
Mon Aug 21, 2023 12:51 pm
Forum: Support
Topic: Inconsistencies in tau_r, K_O2, and K_NO2 coefficients
Replies: 2
Views: 21901

Re: Inconsistencies in tau_r, K_O2, and K_NO2 coefficients

Hi Guillaume,

Thanks for this. Indeed the absorption coefficients would require some more up-to-date and consistent information. I will include this in next Polymer release.
Cheers,
François
by fsteinmetz
Mon Aug 21, 2023 12:41 pm
Forum: Support
Topic: MSI2 Sline Endline command error
Replies: 4
Views: 24800

Re: MSI2 Sline Endline command error

Hi, The answer to your question is in the Level1_MSI docstring ; I agree it may not be the most visible ;) sline, eline, scol, ecol refers to the coordinate of the area to process: * in the 1830x1830 grid at 60m resolution * in the 5490x5490 grid at 20m resolution => eline-sline and ecol-scol must b...
by fsteinmetz
Mon Aug 21, 2023 12:34 pm
Forum: Support
Topic: Assigning a Bounding Box
Replies: 1
Views: 20698

Re: Assigning a Bounding Box

Hi, Indeed it is possible, but the bounding box has to be specified in pixel coordinates. All Level1 objects support the following arguments: sline, eline, scol, ecol, which provide the start and end lines and columns for the bounding box. For Sentinel-2, the coordinates also depend on the chosen re...
by fsteinmetz
Mon Aug 21, 2023 10:37 am
Forum: Support
Topic: Incorrect latitude and longitude values while processing S3_OL_1_EFR
Replies: 1
Views: 21461

Re: Incorrect latitude and longitude values while processing S3_OL_1_EFR

Hi Tiago and sorry for my late reply. Thanks for providing a test image and location, I can reproduce the issue of lat/lon unicity on this file. The lat/lon in Polymer are directly copied from the level1 datasets, located in the "geo_coordinates.nc" file (no tie points are involved). I initially sus...
by fsteinmetz
Mon Aug 21, 2023 8:31 am
Forum: Support
Topic: HICO Data processing
Replies: 1
Views: 21502

Re: HICO Data processing

Hello, To process HICO, you can use the same logic as with the other sensors, using the Level1_HICO class. The resulting python script would look like : from polymer.level1_hico import Level1_HICO from polymer.main import run_atm_corr from polymer.level2_nc import Level2_NETCDF run_atm_corr( Level1_...
by fsteinmetz
Tue May 09, 2023 8:53 pm
Forum: Support
Topic: Bitmask and flags - OLCI
Replies: 1
Views: 20834

Re: Bitmask and flags - OLCI

Dear Patricia, BITMASK_INVALID is an internal mask, and corresponds to the bits in "bitmask", that lead to an empty product (presence of NaN values). BITMASK_REJECT is the value (1023) included in the recommended expression that you should apply on the resulting products to filter out pixels that ma...
by fsteinmetz
Tue May 09, 2023 8:36 pm
Forum: Support
Topic: ImportError: cannot import name 'Level1' from 'polymer.main'
Replies: 1
Views: 20599

Re: ImportError: cannot import name 'Level1' from 'polymer.main'

Thanks Rafael ! This will be included in next release.