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 NASA missions.
How It Works
CDF files are downloaded from the internet to the local machine. The data from these files is loaded into pytplot objects and can be plotted.
These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.
Python 3.5+ is required.
We recommend Anaconda which comes with a suite of packages useful for science.
To install pySPEDAS, open a command line and type the command:
pip install pyspedas
If you have already installed pySPEDAS, you can upgrade to the latest version using:
pip install --upgrade pyspedas
Time History of Events and Macroscale Interactions during Substorms (THEMIS) data
After installation, please change the file
pyspedas/prefs.ini and set
data_dir=C:\Datapy\themis to a writable directory of your choice. This is the local directory where the CDF files will be saved.
To download CDF files for the THEMIS mission, use:
import pyspedas pyspedas.load_data(mission, dates, probes, instruments, level, downloadonly)
d = pyspedas.load_data('themis', '2015-12-31', ['tha'], 'state', 'l1', False)
examples contains some crib sheets to get you started.
Magnetospheric Multiscale (MMS) data
To set your local data directory for MMS, change the local_data_dir option in pyspedas/mms/mms_config.py
To load 1 day of L2 srvy-mode FGM data:
from pyspedas import mms_load_fgm mms_load_fgm(trange=['2015-10-16', '2015-10-17'], data_rate='srvy')
To load 1 minute of L2 brst-mode FPI electron moments data for probes 3 and 4:
from pyspedas import mms_load_fpi mms_load_fpi(probe=[3, 4], trange=['2015-10-16/13:06', '2015-10-16/13:07'], data_rate='brst', datatype='des-moms')
For pytplot, see: https://github.com/MAVENSDC/PyTplot
For cdflib, see: https://github.com/MAVENSDC/cdflib
For SPEDAS, see http://spedas.org/blog/
For information on the THEMIS mission, see http://themis.ssl.berkeley.edu/
(This is the permanent location of pyspedas. Previous location for the initial version of pyspedas was: https://github.com/nickssl/pyspedas)