Dear Guillaume,
To provide a custom directory to NASA ancillary data, you should pass the argument "directory" to the class Ancillary_NASA (Ancillary_NASA(directory=<custom dir>)). Do you confirm this is what you did ? If so, what is the error ?
Cheers,
François
Search found 306 matches
- Tue Jul 19, 2022 7:20 am
- Forum: Support
- Topic: custom ancillary folder doesn't work for NASA satellites
- Replies: 2
- Views: 2686
- Tue Jun 14, 2022 12:27 pm
- Forum: Support
- Topic: Output filename assertion error
- Replies: 2
- Views: 2518
Re: Output filename assertion error
Hi,
No, I think the problem is on the input file : you should provide the path the the granule (ex: S2B_MSIL1C_20200719T100029_N0209_R122_T32TQR_20200719T124000.SAFE/GRANULE/L1C_T32TQR_A017594_20200719T100614)
Cheers,
François
No, I think the problem is on the input file : you should provide the path the the granule (ex: S2B_MSIL1C_20200719T100029_N0209_R122_T32TQR_20200719T124000.SAFE/GRANULE/L1C_T32TQR_A017594_20200719T100614)
Cheers,
François
- Tue Jun 14, 2022 12:25 pm
- Forum: Support
- Topic: Polymer cloud cover and land flag
- Replies: 1
- Views: 2545
Re: Polymer cloud cover and land flag
Hi Tong, The cloud mask in Polymer is determined by a threshold on the reflectance in the NIR band, but by default it is quite relaxed to avoid masking out the sun glint (20%). This way, the semi-transparent clouds are processed by Polymer, and water underneath still being visible. ACOLITE has a str...
- Tue May 24, 2022 2:04 pm
- Forum: Support
- Topic: Strips in Polymer VIIRS Rw image
- Replies: 4
- Views: 3232
Re: Strips in Polymer VIIRS Rw image
I couldn't say, sorry. It seems that the reprojection software handles the VIIRS standard L2 and VIIRS Polymer L2 differently, but this question goes back to the reprojection software.
Cheers,
François
Cheers,
François
- Mon May 23, 2022 9:56 am
- Forum: Support
- Topic: Strips in Polymer VIIRS Rw image
- Replies: 4
- Views: 3232
Re: Strips in Polymer VIIRS Rw image
Dear Mengmeng, Indeed, this is a particularity of the VIIRS sensor. There is no data at level1 for these pixels. This is due to the fact that pixels at the edge of the swath cover a larger area at ground, so some lines of pixels are spared. If you reproject to a similar spatial resolution, there are...
- Fri May 20, 2022 1:17 pm
- Forum: Support
- Topic: Error L8-OLI scene
- Replies: 1
- Views: 2332
Re: Error L8-OLI scene
Dear Muhammad,
I could process a part of this file with Polymer v4.14. Did you use particular processing options ?
Thanks,
Cheers,
François
I could process a part of this file with Polymer v4.14. Did you use particular processing options ?
Thanks,
Cheers,
François
- Fri May 20, 2022 11:07 am
- Forum: Support
- Topic: Error converting VIIRS L1A to L1C data
- Replies: 2
- Views: 2560
Re: Error converting VIIRS L1A to L1C data
Dear Mengmeng,
It seems that you are missing the "viirs" part of the SeaDAS install. You can refer to https://seadas.gsfc.nasa.gov/downloads/ to get the instructions for installing it.
Cheers,
François
It seems that you are missing the "viirs" part of the SeaDAS install. You can refer to https://seadas.gsfc.nasa.gov/downloads/ to get the instructions for installing it.
Cheers,
François
- Fri May 06, 2022 9:17 am
- Forum: Support
- Topic: Failed to download external oceandata files
- Replies: 1
- Views: 2526
Re: Failed to download external oceandata files
Hello, The auxiliary data are fixed files downloaded by the command "make auxdata_all". The ancillary files are different, and are downloaded on the fly to get information about wind speed, surface pressure, etc, for the file you want to process. Installing wget through anaconda should work - could ...
- Fri May 06, 2022 9:01 am
- Forum: Support
- Topic: Polymer running error for MSI
- Replies: 1
- Views: 2645
Re: Polymer running error for MSI
Dear Tong,
Can you confirm that the file auxdata/common/no2_climatology.hdf is present ?
Have you downloaded all auxiliary data with "make auxdata_all" ?
Cheers,
François
Can you confirm that the file auxdata/common/no2_climatology.hdf is present ?
Have you downloaded all auxiliary data with "make auxdata_all" ?
Cheers,
François
- Fri May 06, 2022 8:52 am
- Forum: Support
- Topic: POLYMER ice flagging
- Replies: 1
- Views: 2341
Re: POLYMER ice flagging
Dear Jonathan, Polymer treats ice pixels the same way it treats clouds - in that regard, partial ice coverage can be corrected by Polymer, and thick ice blocks should be flagged as clouds, based on a simple cloud mask based on pixel reflectance in the NIR and standard deviation over a block of pixel...