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PROCEDURE:
mms_load_mec
PURPOSE:
Load the attitude/ephemeris data from the LANL MEC files
KEYWORDS:
trange: time range of interest [starttime, endtime] with the format
['YYYY-MM-DD','YYYY-MM-DD'] or to specify more or less than a day
['YYYY-MM-DD/hh:mm:ss','YYYY-MM-DD/hh:mm:ss']
probes: list of probes, valid values for MMS probes are ['1','2','3','4'].
if no probe is specified the default is probe '1'
datatype: valid datatypes include ['ephts04d', 'epht89q', 'epht89d']
default is 'ephts04d'
data_rate: instrument data rates include ['srvy', 'brst']. The default is 'srvy'.
local_data_dir: local directory to store the CDF files; should be set if
you're on *nix or OSX, the default currently assumes Windows (c:\data\mms\)
source: specifies a different system variable. By default the MMS mission system
variable is !mms
get_support_data: load support data (defined by support_data attribute in the CDF)
tplotnames: names for tplot variables
no_color_setup: don't setup graphics configuration; use this keyword when you're
using this load routine from a terminal without an X server running
time_clip: clip the data to the requested time range; note that if you do not use
this keyword you may load a longer time range than requested
no_update: set this flag to preserve the original data. if not set and newer data is
found the existing data will be overwritten
suffix: appends a suffix to the end of the tplot variable name. this is useful for
preserving original tplot variable.
varformat: should be a string (wildcards accepted) that will match the CDF variables
that should be loaded into tplot variables
cdf_filenames: this keyword returns the names of the CDF files used when loading the data
cdf_version: specify a specific CDF version # to load (e.g., cdf_version='4.3.0')
latest_version: only grab the latest CDF version in the requested time interval
(e.g., /latest_version)
major_version: only open the latest major CDF version (e.g., X in vX.Y.Z) in the requested time interval
min_version: specify a minimum CDF version # to load
cdf_records: specify a number of records to load from the CDF files.
e.g., cdf_records=1 only loads in the first data point in the file
This is especially useful for loading S/C position for a single time
spdf: grab the data from the SPDF instead of the LASP SDC (only works for public access)
available: returns a list of files available at the SDC for the requested parameters
this is useful for finding which files would be downloaded (along with their sizes) if
you didn't specify this keyword (also outputs total download size)
versions: this keyword returns the version #s of the CDF files used when loading the data
always_prompt: set this keyword to always prompt for the user's username and password;
useful if you accidently save an incorrect password, or if your SDC password has changed
tt2000: flag for preserving TT2000 timestamps found in CDF files (note that many routines in
SPEDAS (e.g., tplot.pro) do not currently support these timestamps)
EXAMPLES:
to load/plot the S/C position data for probe 3 on 2/20/2016:
MMS> mms_load_mec, probe=3, trange=['2016-02-20', '2016-02-21']
MMS> tplot, 'mms3_mec_r_gsm'
NOTES:
MISSING DATA: if the MEC data are missing for a date you suspect should contain data (>30 days ago),
try loading the datatype 'epht89d' instead of the default of 'epht04d'.
There are sometimes issues with creating the Tsyganenko 04 data products,
which leads to the default 'epht04d' files not being available. The 'epht89d' files
contain the same ephemeris data - the only difference are the data products that rely on
the field model.
The MMS plug-in in SPEDAS requires IDL 8.4 to access data at the LASP SDC
Have questions regarding this load routine, or its usage?
https://groups.google.com/forum/#!forum/spedas
$LastChangedBy: egrimes $
$LastChangedDate: 2019-07-10 14:19:15 -0700 (Wed, 10 Jul 2019) $
$LastChangedRevision: 27435 $
$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/tags/spedas_3_2/projects/mms/mec/mms_load_mec.pro $
(See projects/mms/mec/mms_load_mec.pro)
PROCEDURE:
mms_mec_fix_metadata
PURPOSE:
Helper routine for setting metadata of MEC variables
$LastChangedBy: egrimes $
$LastChangedDate: 2017-05-01 13:00:22 -0700 (Mon, 01 May 2017) $
$LastChangedRevision: 23255 $
$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/tags/spedas_3_2/projects/mms/mec/mms_mec_fix_metadata.pro $
(See projects/mms/mec/mms_mec_fix_metadata.pro)
PROCEDURE:
mms_mec_formation_plot
PURPOSE:
Creates a plot showing the spacecraft formation
at a given time
INPUT:
time: string containing the date and time to create
the plot for. e.g., 'YYYY-MM-DD/HH:MM'
KEYWORDS:
projection: project the spacecraft positions
onto all planes
xy_projection: project the S/C positions onto the XY plane
xz_projection: project the S/C positions onto the XZ plane
yz_projection: project the S/C positions onto the YZ plane
quality_factor: include the tetrahedron quality factor
coord: coordinate system of the formation plot; default is GSE
valid options are eci, gsm, geo, sm, gse, gse2000
xyz: a 3 x 3 rotation matrix for rotating position data to an
arbitrary coordinate system from the coordinate system
defined by coord
lmn: a 3 x 3 rotation matrix for rotating position data to an
LMN coordinate system from the coordinate system
defined by coord (do not use with xyz keyword)
sundir: direction of the sun (+x) in the figure (right or left); default is 'right'
(+N direction for LMN coordinate)
independent_axes: by default, the same scale is used for each axis; set this keyword
to use different scales for the x, y, and z axes
EXAMPLES:
mms_mec_formation_plot, '2016-1-08/2:36', /xy_projection, coord='gse'
should create something like:
https://lasp.colorado.edu/mms/sdc/public/data/sdc/mms_formation_plots/mms_formation_plot_20160108023624.png
Sun to the left:
mms_mec_formation_plot, '2016-1-08/2:36', /xy_projection, coord='gse', sundir='left'
Specify an LMN transformation:
mms_mec_formation_plot, '2016-1-08/2:36', /xy_projection, coord='gse', lmn=[[0.00,0.00,1.00],[0.00,-1.00,0.00],[1.00,0.00,0.00]], sundir='left'
Specify an XYZ transformation:
mms_mec_formation_plot, '2016-1-08/2:36', /xy_projection, coord='gse', xyz=[[0.00,0.00,1.00],[0.00,-1.00,0.00],[1.00,0.00,0.00]], sundir='left'
HISTORY:
August 2016: Lots of updates from Naritoshi Kitamura
The original copy of this comes from the
SDC version, which was written by Kris Larsen
and Kim Kokkonen at LASP
$LastChangedBy: egrimes $
$LastChangedDate: 2019-10-16 10:31:13 -0700 (Wed, 16 Oct 2019) $
$LastChangedRevision: 27875 $
$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/tags/spedas_3_2/projects/mms/mec/mms_mec_formation_plot.pro $
(See projects/mms/mec/mms_mec_formation_plot.pro)
PROCEDURE:
mms_orbit_plot
PURPOSE:
Creates a plot showing the spacecraft location
KEYWORDS:
trange: time range of interest
probes: probes to include in the orbits plot
plane: orbital plane to plot (default: 'xy', other options include: 'yz', 'xz')
xrange: min and max of the horizontal axis
yrange: min and max of the vertical axis
coord: coordinate system of the plot (default: gse)
other options include: 'eci', 'gsm', 'geo', 'sm', 'gse2000'
title: title of the plot; defaults to the time range of the orbit
EXAMPLES:
IDL> mms_orbit_plot, probe=[1, 2, 3, 4], trange=['2015-12-15', '2015-12-16']
HISTORY:
Based on SDC routine that produces historical orbit plots for MMS originally
by Kris Larsen, Kim Kokkonen, Chris Lindholm; egrimes heisted the important parts
and turned this into a SPEDAS routine on November 27, 2017
NOTES:
terminator line on Earth is probably going to be incorrect when plane is specified to be YZ
$LastChangedBy: egrimes $
$LastChangedDate: 2019-09-12 10:29:05 -0700 (Thu, 12 Sep 2019) $
$LastChangedRevision: 27748 $
$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/tags/spedas_3_2/projects/mms/mec/mms_orbit_plot.pro $
(See projects/mms/mec/mms_orbit_plot.pro)