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. 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. 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 NOERASE: Don't erase previously plotted positions. Can be used to build up a visual representation of sampling. KEEP: Do not kill the plot windows on exit. $LastChangedBy: dmitchell $ $LastChangedDate: 2014-10-31 14:24:42 -0700 (Fri, 31 Oct 2014) $ $LastChangedRevision: 16108 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/maven_orbit_tplot/maven_orbit_snap.pro $ CREATED BY: David L. Mitchell 10-28-11