Problem with GCMT convention in meca.py

[weiji14]

Description of the problem

Originally reported by @philcummins at https://forum.generic-mapping-tools.org/t/pygmt-parameter-check-in-meca-py/1874. Copying here to keep track.

In the parameters section of the documentation block in meca.py, it says that the GCMT convention is determined if a dictionary with the following keys is passed:

• "gcmt" — strike1, dip1, rake1, strike2, dip2, rake2, mantissa,exponent
  But later in the code, when the parameters to check against are set (line 250-252), it says:
  param_conventions = {
  “AKI”: [“strike”, “dip”, “rake”, “magnitude”],
  “GCMT”: [“strike1”, “dip1”, “dip2”, “rake2”, “mantissa”,“exponent”],
  …

So it seems if you pass all the parameters it says it requires, it fails with:
GMTError: Parameters in spec dictionary do not match known conventions.

BTW, it says a geopandas dataframe an be used to pass in location info. Are there any planes to pass in the focal mechanism parameters in the geopandas dataframe as well?

Solution would be to modify this line I think:

pygmt/pygmt/src/meca.py

Line 252 in 5cb1035

"GCMT": ["strike1", "dip1", "dip2", "rake2", "mantissa", "exponent"],

I.e., need to add "rake1", "strike2" in the middle of the list.

Full code that generated the error

PASTE CODE HERE

Full error message

PASTE ERROR MESSAGE HERE

System information

Please paste the output of python -c "import pygmt; pygmt.show_versions()":

PASTE THE OUTPUT HERE