Hi,everyone.
I downloaded the three-level product of the 10 bands of MODIS Rrs. Now I want to extract Rrs with Matlab. How can I do this? Or can you send me a detailed description of the contents of this data file? Or how to extract Rrs?
Or other softwares can get the Rrs will be OK!
Many Thanks!:grin::grin:
some questions about how to extract MODIS L3 Rrs
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some questions about how to extract MODIS L3 Rrs
There are 2 types of level-3 data: binned and mapped. Both use NetCDF4-CF format, which are also HDF5 format (NetCDF4 is a simplified subset of HDF5). NASA SeaDAS 7 and ESA SNAP both support level-3 mapped data. The OCSSW Processing System has command-line programs to map binned data, see Topic 9292. There are also many generic tools to read a display data from these files, including NASA Panoply and HDFview from the HDF Group.
The NetCDF4-CF format is "self-documenting". Matlab has tools to display the structure of a given file. If you have mapped data the contents are stored as 2-D arrays that recent Matlab versions can use without a lot of manipulation. There is a Matlab example using a binned file. For some Matlab versions the HDF5 support may work when NetCDF4 fails.
The NetCDF4-CF format is "self-documenting". Matlab has tools to display the structure of a given file. If you have mapped data the contents are stored as 2-D arrays that recent Matlab versions can use without a lot of manipulation. There is a Matlab example using a binned file. For some Matlab versions the HDF5 support may work when NetCDF4 fails.
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- Posts: 3
- Joined: Tue Feb 26, 2019 9:44 am America/New_York