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You are on target.

Can you do and share the result here?

Is your Mac with M1/M2 chip? If so, you need take extra steps to set up the environment in order to run l2gen https://seadas.gsfc.nasa.gov/downloads/

Or you can try to run l2gen using Client Server model (docker is recommended)

You can try SeaDAS' BandMaths Tool to create new bands using avg() and/or stddev() functions. https://seadas.gsfc.nasa.gov/help-8.4.0/desktop/BandMaths.html The expression editor for avg() looks like this Screenshot 2023-10-26 at 12.52.50 PM.png If you want to do BandMaths on many files, you can try...

l2gen needs an L1 file as the input (e.g. LC08_L1TP_015033_20220329_20220406_02_T1_MTL.txt)

I just tried seadas-8.4.0 on an old mac (Monterey 12.6.5). It works fine.

Make sure you don't have another copy of SeaDAS opened. And this might help

I don't know about ODV software, but I know SeaDAS cannot read l3b files. https://seadas.gsfc.nasa.gov/ However, if you use l3mapgen tool to turn l3bin files into l3m files, SeaDAS can read it. https://seadas.gsfc.nasa.gov/help-8.4.0/processors/ProcessL3mapgen.html Or you can download and read the e...

If you choose "docker" instead of "virtualMachine" for OCSSW Location, you should be able to get rid of the red warnings. However, SeaDAS 8.4.0 is not able to print out the detailed info of ocssw that is installed through docker. Instead, you can run this command on the docker te...

LC08_L1TP_015036_20230503_20230509_02_T1/LC08_L1TP_015036_20230503_20230509_02_T1_MTL.txt

Could you please give SeaDAS 8.4.0 a try? Also install OCSSW (the latest tag is V2023.3) through Docker https://seadas.gsfc.nasa.gov/client_server/

I have Ubuntu 20.04.6 LTS

I can't replicate your error running If the generated GEO file is of the similar size of the GEO file on our site, and can be used for modis_L1B and/or l2gen, you probably can ignore the error message