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Python Space Physics Environment Data Analysis Software (SPEDAS)

Project description

pySPEDAS

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pySPEDAS is an implementation of the SPEDAS framework in python.

The Space Physics Environment Data Analysis Software (SPEDAS) framework is written in IDL and contains data loading, data analysis and data plotting tools for various scientific missions (NASA, NOAA, etc.) and ground magnetometers.

Projects Supported

Requirements

Python 3.7+ is required.

We recommend Anaconda which comes with a suite of packages useful for scientific data analysis.

Installation

pySPEDAS supports Windows, macOS and Linux. To get started, install the pyspedas package using PyPI:

PyPI

pip install pyspedas --upgrade

Usage

To get started, import pyspedas and pytplot:

import pyspedas
from pytplot import tplot

You can load data into tplot variables by calling pyspedas.mission.instrument(), e.g.,

To load and plot 1 day of THEMIS FGM data for probe 'd':

thm_fgm = pyspedas.themis.fgm(trange=['2015-10-16', '2015-10-17'], probe='d')

tplot(['thd_fgs_gse', 'thd_fgs_gsm'])

To load and plot 2 minutes of MMS burst mode FGM data:

mms_fgm = pyspedas.mms.fgm(trange=['2015-10-16/13:05:30', '2015-10-16/13:07:30'], data_rate='brst')

tplot(['mms1_fgm_b_gse_brst_l2', 'mms1_fgm_b_gsm_brst_l2'])

Note: by default, pySPEDAS loads all data contained in CDFs found within the requested time range; this can potentially load data outside of your requested trange. To remove the data outside of your requested trange, set the time_clip keyword to True

To load and plot 6 hours of PSP SWEAP/SPAN-i data:

spi_vars = pyspedas.psp.spi(trange=['2018-11-5', '2018-11-5/06:00'], time_clip=True)

tplot(['DENS', 'VEL', 'T_TENSOR', 'TEMP'])

To download 5 days of STEREO magnetometer data (but not load them into tplot variables):

stereo_files = pyspedas.stereo.mag(trange=['2013-11-1', '2013-11-6'], downloadonly=True)

Standard Options

  • trange: two-element list specifying the time range of interest. This keyword accepts a wide range of formats
  • time_clip: if set, clip the variables to the exact time range specified by the trange keyword
  • suffix: string specifying a suffix to append to the loaded variables
  • varformat: string specifying which CDF variables to load; accepts the wild cards * and ?
  • varnames: string specifying which CDF variables to load (exact names)
  • get_support_data: if set, load the support variables from the CDFs
  • downloadonly: if set, download the files but do not load them into tplot
  • no_update: if set, only load the data from the local cache
  • notplot: if set, load the variables into dictionaries containing numpy arrays (instead of creating the tplot variables)

Getting Help

To find the options supported, call help on the instrument function you're interested in:

help(pyspedas.themis.fgm)

You can ask questions by creating an issue or by joining the SPEDAS mailing list.

Contributing

We welcome contributions to pySPEDAS; to learn how you can contribute, please see our Contributing Guide

Code of Conduct

In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation. To learn more, please see our Code of Conduct.

Additional Information

For examples of pyspedas, see: https://github.com/spedas/pyspedas_examples

For MMS examples, see: https://github.com/spedas/mms-examples

For pytplot, see: https://github.com/MAVENSDC/PyTplot

For cdflib, see: https://github.com/MAVENSDC/cdflib

For SPEDAS, see http://spedas.org/

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1.2.1

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