Source code for pyrfu.pyrf.gse2gsm
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 3rd party imports
import xarray as xr
# Local imports
from .cotrans import cotrans
__author__ = "Louis Richard"
__email__ = "louisr@irfu.se"
__copyright__ = "Copyright 2020-2023"
__license__ = "MIT"
__version__ = "2.4.2"
__status__ = "Prototype"
[docs]def gse2gsm(inp, flag: str = "gse>gsm"):
r"""Converts GSE to GSM.
Parameters
----------
inp : xarray.DataArray or ndarray
Time series of the input in GSE (GSM) coordinates.
If ndarray first column is time in unix format.
flag : {"gse>gsm", "gsm>gse"}, Optional
Flag for conversion direction. Default is "gse>gsm"
Returns
-------
out : xarray.DataArray or ndarray
Time series of the input in GSM (GSE) coordinates.
If ndarray first column is time in unix format.
See also
--------
pyrfu.pyrf.geocentric_coordinate_transformation
"""
assert isinstance(inp, xr.DataArray), "inp must be a xarray.DataArray"
assert inp.ndim == 2 and inp.shape[1] == 3, "inp must be a vector"
message = "flag must be a string gse>gsm or gsm>gse"
assert isinstance(flag, str) and flag.lower() in ["gse>gsm", "gsm>gse"], message
out = cotrans(inp, flag)
return out