Search found 132 matches

by fsteinmetz
Sat Oct 17, 2020 8:50 pm
Forum: Support
Topic: What is Bitmask 2112
Replies: 7
Views: 622

Re: What is Bitmask 2112

Hello Vishnu, These flags are in the second category, so products are still provided by default even when these flags are raised. There is no need to modify anything in common.py. Even "case2" (1024) and "inconsistency" (2048) are not included in the recommended bitmask value 1023. To avoid filterin...
by fsteinmetz
Fri Oct 16, 2020 7:28 am
Forum: Support
Topic: What is Bitmask 2112
Replies: 7
Views: 622

Re: What is Bitmask 2112

Dear Vishnu, There are two kind of flags: 1) Those for which the products are empty (set to NaN) - these are defined by the variable BITMASK_INVALID in params.py 2) The other flags (see common.py), for which the products are still calculated. These flags must be removed by the user, so avoiding them...
by fsteinmetz
Wed Oct 14, 2020 6:11 am
Forum: Support
Topic: run lots of images
Replies: 5
Views: 287

Re: run lots of images

You are passing 'result' to Level1_MSI, which is not a variable but a string.
by fsteinmetz
Mon Oct 12, 2020 7:37 am
Forum: Support
Topic: Problems encountered when processing landsat-8 data
Replies: 5
Views: 411

Re: Problems encountered when processing landsat-8 data

Sorry, I have not received your images.
Cheers,
François
by fsteinmetz
Fri Oct 09, 2020 8:14 am
Forum: Support
Topic: run lots of images
Replies: 5
Views: 287

Re: run lots of images

Dear Binbin, Good to know that you are planning for a massive processing. You can activate parallel processing with the argument multiprocessing=-1 which will make the processing faster on a single computer. Then you can use a simple loop over the files, or set up a processing on a cluster, dependin...
by fsteinmetz
Wed Sep 23, 2020 9:03 am
Forum: Support
Topic: Why there are many NaN in processing sentinel-2 ?
Replies: 10
Views: 940

Re: Why there are many NaN in processing sentinel-2 ?

dingky wrote:
Tue Sep 22, 2020 1:34 pm
Can polymer algorithm only perform atmospheric correction on water bodies?
Yes
dingky wrote:
Tue Sep 22, 2020 1:34 pm
Can it perform atmospheric correction on land.
No

Cheers,
François
by fsteinmetz
Tue Sep 22, 2020 10:04 am
Forum: Support
Topic: Problems encountered in processing sentinel2 data using polymer4.13
Replies: 3
Views: 223

Re: Problems encountered in processing sentinel2 data using polymer4.13

Please mind the case sensitivity.
Cheers,
François
by fsteinmetz
Tue Sep 22, 2020 9:57 am
Forum: Support
Topic: Problems encountered when processing landsat-8 data
Replies: 5
Views: 411

Re: Problems encountered when processing landsat-8 data

The l8angles code is available at this address : https://landsat.usgs.gov/sites/default/files/documents/L8_ANGLES_2_7_0.tgz Documentation is here : https://www.usgs.gov/core-science-systems/nli/landsat/solar-illumination-and-sensor-viewing-angle-coefficient-files?qt-science_support_page_related_con=...
by fsteinmetz
Mon Sep 21, 2020 8:37 am
Forum: Support
Topic: way to shapes
Replies: 5
Views: 335

Re: way to shapes

Hi Brenner,
I suspect that the issue might be in the Level1 class, but I did not understand which Level1 class you have used: which one is it ?
Cheers,
François
by fsteinmetz
Mon Sep 21, 2020 8:06 am
Forum: Support
Topic: Problems encountered when processing landsat-8 data
Replies: 5
Views: 411

Re: Problems encountered when processing landsat-8 data

Hi, Processing landsat8 requires that the solar and sensor angles are calculated beforehand. This requires applying the program "l8angles" available on https://www.usgs.gov/land-resources/nli/landsat/solar-illumination-and-sensor-viewing-angle-coefficient-files "l8angles" must be applied with the fo...