Search found 140 matches

by fsteinmetz
Wed Oct 14, 2020 6:11 am
Forum: Support
Topic: run lots of images
Replies: 8
Views: 418

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: 495

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: 8
Views: 418

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: 1076

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: 286

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: 495

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: 415

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: 495

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...
by fsteinmetz
Mon Sep 21, 2020 7:59 am
Forum: Support
Topic: Problems encountered in processing sentinel2 data using polymer4.13
Replies: 3
Views: 286

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

Hi,
polymer.level2_hdf is a module.
You have to import the Level2_HDF class like so : from polymer.level2_hdf import Level2_HDF
Cheers,
François
by fsteinmetz
Mon Sep 21, 2020 7:56 am
Forum: Support
Topic: What is Bitmask 2112
Replies: 7
Views: 725

Re: What is Bitmask 2112

Hi Vishnu, Indeed, the recommended flags to be rejected are the first 10, which does not include CASE2. I would advice that you can keep pixels flagged with "INCONSISTENCY" (value 2048) and remove those flagged with "THICK_AEROSOLS" (value 64), but your feedback is welcome if you identified instabil...