Directory Listing of Routines

projects/maven/models/sep_elec

MAG_MOLA_ORBIT2
Plots a set of [longitude,latitude] positions over a MAG-MOLA
MAVEN_ORBIT_SNAP2
After running maven_orbit_tplot, this routine plots the orbit as viewed

Routine Descriptions

MAG_MOLA_ORBIT2

PROCEDURE:   mag_mola_orbit
PURPOSE:
  Plots a set of [longitude,latitude] positions over a MAG-MOLA
  map.

USAGE:
  mag_mola_orbit, lon, lat

INPUTS:
       lon:       East longitude (0 to 360 degrees).

       lat:       Latitude (-90 to 90 degrees).

                  Note: lon and lat must have the same number
                        of elements.

KEYWORDS:
       PSYM:       Symbol type (same as for plot).

       LSTYLE:     Line style (same as for plot).

       COLOR:      Line/symbol color (same as for plot).

       RESET:      Read in the MAG-MOLA image and calculate the
                   plot size and position.

       NOERASE:    Do not refresh the plot for each [lon, lat] point.

       BIG:        Use a 1000x500 MAG-MOLA image.

       TERMINATOR: Overlay the terminator at the time specified by this
                   keyword.

       SHADOW:     If TERMINATOR is set, specifies which "terminator" to
                   plot.
                      0 : Optical shadow boundary at surface.
                      1 : Optical shadow boundary at s/c altitude.
                      2 : EUV shadow boundary at s/c altitude.

 $LastChangedBy: dmitchell $
 $LastChangedDate: 2017-01-09 16:53:18 -0800 (Mon, 09 Jan 2017) $
 $LastChangedRevision: 22552 $
 $URL: file:///disks/socware/thmsvn/repos/spdsoft/trunk/projects/maven/maven_orbit_tplot/mag_mola_orbit.pro $

CREATED BY:	David L. Mitchell  04-02-03

(See projects/maven/models/sep_elec/mag_mola_orbit2.pro)

MAVEN_ORBIT_SNAP2

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PROCEDURE: maven_orbit_snap
PURPOSE:
After running maven_orbit_tplot, this routine plots the orbit as viewed
along each of the MSO axes. Optionally, the orbit can be superimposed on
models of the solar wind interaction with Mars. Also optionally, the
position of the spacecraft can be plotted (in GEO coordinates) on a map
of Mars' topography and magnetic field based on MGS MOLA and MAG data.

All plots are generated at times selected with the cursor on the TPLOT
window. Hold down the left mouse button and drag for a movie effect.

USAGE:
maven_orbit_snap
INPUTS:

KEYWORDS:
PREC: Plot the position of the spacecraft at the selected time,
superimposed on the orbit. Otherwise, the periapsis
location for each orbit is plotted. For time ranges less
than one day, the default is PREC = 1. Otherwise the
default is 0.

MHD: Plot the orbit superimposed on an image of an MHD simulation
of the solar wind interaction with Mars (from Ma).
1 : Plot the XY projection
2 : Plot the XZ projection

HYBRID: Plot the orbit superimposed on an image of a hybrid simulation
of the solar wind interaction with Mars (from Brecht).
1 : Plot the XZ projection
2 : Invert Z in the model, then plot the XZ projection

LATLON: Plot MSO longitudes and latitudes of periapsis (PREC=0) or
the spacecraft (PREC=1) in a separate window.

CYL: Plot MSO cylindrical projection (x vs. sqrt(y^2 + z^2)).

XZ: Plot only the XZ projection.

MARS: Plot the position of the spacecraft (PREC=1) or periapsis
(PREC=0) on an image of Mars topography and magnetic field
based on MGS data (from Connerney).
1 : Use a small image
2 : Use a large image

NPOLE: Plot the position of the spacecraft (PREC=1) or periapsios
(PREC=0) on a north polar projection (lat > 55 deg). The
background image is the north polar magnetic anomalies observed
at 180-km altitude by MGS (from Acuna).

ALT: If set and keywords MARS and/or NPOLE are set, then indicate the
spacecraft altitude next its symbol.

TERMINATOR: Overplot the terminator and sub-solar point onto the Mars
topography plots (see MARS and NPOLE above). SPICE must be
installed and initialized (e.g., mvn_swe_spice_init) before
using this keyword. The following values are recognized:
0 : Do not plot any shadow boundary. (default)
1 : Plot optical shadow boundary at surface.
2 : Plot optical shadow boundary at s/c altitude.
3 : Plot EUV shadow boundary at s/c altitude.

NOERASE: Don't erase previously plotted positions. Can be used to build
up a visual representation of sampling.

NODOT: Do not plot a filled circle at periapsis or spacecraft location.

RESET: Initialize all plots.

COLOR: Symbol color index.

KEEP: Do not kill the plot windows on exit.

TIMES: An array of times for snapshots. Snapshots are overlain onto
a single version of the plot. For evenly spaced times, this
produces a "spirograph" effect. This overrides the interactive
entry of times with the cursor. Sets KEEP, NOERASE, and RESET.

BDIR: Set keyword to show magnetic field direction in three planes,
In each plane, the same two components of B in MSO coordinates
are shown, i.e. in XY plane, plotting Bx-By. The color shows
if the third component (would be Bz in XY plane) is positive
(red) or negative (blue).

BCLIP: Maximum amplitude for plotting B whisker.

SCALE: To change the scale/length of field lines, the default value is
set to 0.05

THICK: Line thickness.

MAGNIFY: Change size of plot windows.

PSNAME: Name of a postscript plot. Works only for orbit plots.

$LastChangedBy: dmitchell $
$LastChangedDate: 2017-10-02 17:58:29 -0700 (Mon, 02 Oct 2017) $
$LastChangedRevision: 24100 $
$URL: file:///disks/socware/thmsvn/repos/spdsoft/trunk/projects/maven/maven_orbit_tplot/maven_orbit_snap.pro $

CREATED BY: David L. Mitchell 10-28-11

(See projects/maven/models/sep_elec/maven_orbit_snap2.pro)