23096825121

Committed 14 Mar 2026 09:34PM UTC coverage: 10.65% (-79.8%) from 90.486%

Build # 23096825121

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push

github

Committed by

jameswilburlewis

Commit Message

Allow uploading of hidden files

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5208 of 48900 relevant lines covered (10.65%)

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33.33

/pyspedas/tplot_tools/tplot_math/derive.py

# Copyright 2018 Regents of the University of Colorado. All Rights Reserved.
# Released under the MIT license.
# This software was developed at the University of Colorado's Laboratory for Atmospheric and Space Physics.
# Verify current version before use at: https://github.com/MAVENSDC/Pytplot

import pyspedas
from pyspedas.tplot_tools import store_data
import numpy as np
import copy
import logging

def derive(tvar,newname=None):
    """
    Takes the derivative of the tplot variable.

    Parameters
    ----------
        tvar : str
            Name of tplot variable.
        newname : str
            Name of new tplot variable.  If not set, then the data in tvar is replaced.

    Returns
    -------
        None

    Examples
    --------

        >>> pyspedas.store_data('b', data={'x':[2,5,8,11,14,17,20], 'y':[[1,1,1,1,1,1],[2,2,5,4,1,1],[100,100,3,50,1,1],[4,4,8,58,1,1],[5,5,9,21,1,1],[6,6,2,2,1,1],[7,7,1,6,1,1]]})
        >>> pyspedas.derive('b','dbdt')

    """

    a = pyspedas.tplot_tools.data_quants[tvar].differentiate('time')
    if newname is None:
        a.name = tvar
        a.attrs = copy.deepcopy(pyspedas.tplot_tools.data_quants[tvar].attrs)
        pyspedas.tplot_tools.data_quants[tvar] = a
    else:
        data = {'x':a.coords['time'], 'y':a.values * 1e09}  # Internal time in units of nanoseconds
        for coord in a.coords:
            if coord != 'time' and coord != 'spec_bins':
                data[coord] = a.coords[coord].values

        store_data(newname, data=data)
        pyspedas.tplot_tools.data_quants[newname].attrs = copy.deepcopy(pyspedas.tplot_tools.data_quants[tvar].attrs)

    return

1	# Copyright 2018 Regents of the University of Colorado. All Rights Reserved.
2	# Released under the MIT license.
3	# This software was developed at the University of Colorado's Laboratory for Atmospheric and Space Physics.
4	# Verify current version before use at: https://github.com/MAVENSDC/Pytplot
5
6	import pyspedas	1✔
7	from pyspedas.tplot_tools import store_data	1✔
8	import numpy as np	1✔
9	import copy	1✔
10	import logging	1✔
11
12	def derive(tvar,newname=None):	1✔
13	"""
14	Takes the derivative of the tplot variable.
15
16	Parameters
17	----------
18	tvar : str
19	Name of tplot variable.
20	newname : str
21	Name of new tplot variable. If not set, then the data in tvar is replaced.
22
23	Returns
24	-------
25	None
26
27	Examples
28	--------
29
30	>>> pyspedas.store_data('b', data={'x':[2,5,8,11,14,17,20], 'y':[[1,1,1,1,1,1],[2,2,5,4,1,1],[100,100,3,50,1,1],[4,4,8,58,1,1],[5,5,9,21,1,1],[6,6,2,2,1,1],[7,7,1,6,1,1]]})
31	>>> pyspedas.derive('b','dbdt')
32
33	"""
34
35	a = pyspedas.tplot_tools.data_quants[tvar].differentiate('time')	×
36	if newname is None:	×
37	a.name = tvar	×
38	a.attrs = copy.deepcopy(pyspedas.tplot_tools.data_quants[tvar].attrs)	×
39	pyspedas.tplot_tools.data_quants[tvar] = a	×
40	else:
41	data = {'x':a.coords['time'], 'y':a.values * 1e09} # Internal time in units of nanoseconds	×
42	for coord in a.coords:	×
43	if coord != 'time' and coord != 'spec_bins':	×
44	data[coord] = a.coords[coord].values	×
45
46	store_data(newname, data=data)	×
47	pyspedas.tplot_tools.data_quants[newname].attrs = copy.deepcopy(pyspedas.tplot_tools.data_quants[tvar].attrs)	×
48
49	return	×

spedas / pyspedas / 23096825121

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