Search found 214 matches

by OB SeaDAS - dshea
Wed May 20, 2020 11:39 am America/New_York
Forum: All Questions/Comments
Question: l2bin error
Replies: 4

l2bin error

"line 1479 of /home/seadas/ocssw/src/l2bin/l2bin.c: Permission denied"is the line of source code that had the problem.  l2bin can not create the output netCDF file.  Make sure you have permission to write in the current directory and that the file you are trying to create does no...
by OB SeaDAS - dshea
Mon Apr 20, 2020 8:26 am America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

All sensors that l2gen can read are supported by lonlat2pixline.  Both programs share the same sensor reading code.

don
by OB SeaDAS - dshea
Tue Apr 14, 2020 11:37 am America/New_York
Forum: All Questions/Comments
Question: l2gen products
Replies: 45

l2gen products

It is easy on the command line also.  Assume you want to run l2gen with ifile=A2008080195500.L1B_LACgetanc.py A2008080195500.L1B_LACwhich will create the file A2008080195500.L1B_LAC.anc  Now use the ancillary files in l2gen:l2gen ifile=A2008080195500.L1B_LAC geofile=A2008080195500.GEO ofil...
by OB SeaDAS - dshea
Wed Apr 08, 2020 9:00 am America/New_York
Forum: All Questions/Comments
Question: Problems building SeaDAS
Replies: 9

Problems building SeaDAS

Looks like we needed to add the date_time module to boost.  Add "date_time" to the build line of:

$OCSSWROOT/opt/src/boost/BuildIt

Make line 25 look like this:

./bootstrap.sh --prefix=$installdir --with-libraries=chrono,filesystem,timer,date_time

Then run the boost/BuildIt script

don
by OB SeaDAS - dshea
Thu Mar 19, 2020 8:35 pm America/New_York
Forum: All Questions/Comments
Question: What is the processing flow for VIIRS for L0 -> L1 -> L2 -> l2bin -> l3mapgen
Replies: 10

What is the processing flow for VIIRS for L0 -> L1 -> L2 -> l2bin -> l3mapgen

If you are grabbing the L1A files from us, you might as well get the GEO files from us also also.  Dealing with the L0 files is more difficult, and we do not distribute the L0->L1A program.L1A:V2020078180000.L1A_SNPP.ncV2020078185400.L1A_JPSS1.ncGEO:V2020078180000.GEO-M_SNPP.nc  V202007818...
by OB SeaDAS - dshea
Mon Mar 16, 2020 8:34 pm America/New_York
Forum: All Questions/Comments
Question: command line OCSSW advice
Replies: 21

command line OCSSW advice

Not sure how the TileSize attribute got in your L2 file, but the flags line up easily:l2_flags:flag_meanings = "ATMFAIL LAND PRODWARN HIGLINT HILT HISATZEN COASTZ SPARE8 STRAYLIGHT CLDICE COCCOLITH TURBIDW HISOLZEN SPARE14 LOWLW CHLFAIL NAVWARN ABSAER SPARE19 MAXAERITER MODGLINT CHLWARN ATMWARN...
by OB SeaDAS - dshea
Wed Mar 04, 2020 3:28 pm America/New_York
Forum: All Questions/Comments
Question: Geolocation issue with L2 Sentinel2 and Landsat8 products
Replies: 3

Geolocation issue with L2 Sentinel2 and Landsat8 products

Yes, it looks like our L1 reader for MSI data is flagging any pixel with bad Lt as NAVFAIL.  The scene you sent has mostly bad Lt except in the lower corner, which caused problems for the code which sets the North, South, East, West metadata.  We have new software that can handle this situ...
by OB SeaDAS - dshea
Mon Mar 02, 2020 9:42 am America/New_York
Forum: All Questions/Comments
Question: How to get higher than 1000m/pixel resolution?
Replies: 18

How to get higher than 1000m/pixel resolution?

Remember that most of the MODIS bands used to calculate the products are 1KM,  so you need to decide if 250m resolution is appropriate.  This it what I would change to get the highest possible resolution from MODIS.modis_L1A.pygetanc.pymodis_GEO.pymodis_L1B.pyl2gen resolution=250 l2prod=ss...
by OB SeaDAS - dshea
Wed Feb 26, 2020 12:13 pm America/New_York
Forum: All Questions/Comments
Question: Geolocation issue with L2 Sentinel2 and Landsat8 products
Replies: 3

Geolocation issue with L2 Sentinel2 and Landsat8 products

can you give me an L1 file where l2gen produces a coordinate box for the whole earth.  Remember, if the scene is near a pole this bounding box is correct.

don
by OB SeaDAS - dshea
Wed Feb 19, 2020 12:29 pm America/New_York
Forum: All Questions/Comments
Question: L2gen error - file A2017072165000.L1A_LAC
Replies: 7

L2gen error - file A2017072165000.L1A_LAC

This file works fine for me with l2gen version 9.5.0-V2019.3.  Looks like l2gen is only allocating 3 L1 buffers when it needs 5.  Can you give me the exact command line you are using to run l2gen.  A smaller filter kernel can cause this problem.

don