[Units] Discussion about current unit list about eml HOT 5 OPEN

While working on the unidata units, I observe there are no "deciBel" entry (bu ta wide set of units derived from deciBel)

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New question:

Intended use of SI

Is the parentSI meant to be used with only the seven base SI units? Or are SI-derived units valid in this column?

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Well, here it is: a reviewed list of the EML::get_unitList()$units.
This file is built on the Unidata unit lists (https://www.unidata.ucar.edu/software/udunits/udunits-2.2.28/udunits2.html#Database)
I listed units programmatically in a table with their name, udunit name and definitions. I then removed all duplicates or marked them as deprecatedInFavorOf. Then searched for definition and conversion in SI units.
Most lines have a green background, meaning I am 90% sure of the content, some have a lightgreen background meaning I would appreciate those units to be reviewed, and some have an orange background meaning I am not sure these are even units (like Pi or Avogadro's number).
I also added kiloYear (kyr) ad megaYear (myr) since these are commonly used by paleontologists.

EML_files_2.ods

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DeciBel and logarithmitc units

Yes, another topic: how could deciBel be handled in the {EML} way, since it is defined as a logarithmic value?

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Arf, just got a view into the code and saw this issue shall get into https://github.com/ropensci/emld/issues (and more broadly into EML standard)

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