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Roughly speaking, you get a weighted contribution from the underwater concentration.   The wavelengths used in chlor_a algorithms can penetrate many meters, but due to attenuation of the light on both downward and return paths, the contribution to Rrs is heavily weighted towards the surfac...

Try Oracle Java.  OpenJDK is known to have problems with graphics updating.

My personal approach to the issues you posed:1.  attaching a colorbara. GPT is generally used in batch processing to create lots of images, hopefully all with the same colour scale.  Rather than attaching a colour scale to each image, it often makes sense to keep it separate.  I often...

Try using the full paths for the lines:dnb_dynamic_lut_file=<** missing path **>/VIIRS_NPP_CAL_DNB_DYNAMIC_LUT_v2.0.0.2_obpg.ncrsb_dynamic_lut_file=<** missing path **>/VIIRS_NPP_CAL_RSB_DYNAMIC_LUT_v2.0.0.2_obpg.ncI don't think the big dem files are needed if you use V*.GEO-M_SNPP.nc files, and...

I get the same error on 2 different systems (macOS and linux).  Using "strace geolocate_viirs verbose=true ifile=V2017072153000.L1A_SNPP.nc" reveals that the problem is with "$OCDATAROOT/viirsn/dem//NPP_VIIRS_Terrain-Eco-ANC-Tile_N0722_v1.5.04.00_LP.teb".   I have ...

If you want to do VIIRS geolocation you need to install the files manually, see What is needed to geolocate NASA L1 VIIRS data?-SeaDAS 7 FAQ

The log shows "Caused by: java.awt.HeadlessException".  In plain language, this says Java didn't find keyboard, mouse, or display so is running in "headless" mode.

I have SeaDAS 7.4 on Linux Mint 18.1 (based on Ubuntu 16.04).  After running update_luts.py I also have the new $OCVARROOT/viirsn/cal/OPER/*_LUT_v2.0.0.2_obpg.nc files but ocssw/run/data/viirsn/instrument_defaults.par still has *_LUT_v1.1.0.1_obpg.nc.

The "quick fix" get around an incomplete or broken installation is to remove the broken software and install a "known working" configuration (Anaconda python 2.7, which includes curl or macports' python 2.7 with git, wget, and curl).   The "--no-check-certifica...

For https URL's, wget needs an SSL/TLS library, usually openssl, and certificates.  I use Macports's wget on darwin 15.6.0, linked to Macports' openssl.  The certifcates are in /opt/local/etc/openssl and come from the curl-ca-bundle package:Description:      ...