#  orbital_input.txt
#
#  Input to GNUPLOT, causing it to read ORBITAL_GNUPLOT.TXT and
#  create a contour plot of the data.
#
#  Warning: the data must be in a very specific format.
#  The data file will contain records of the form
#    x y z
#  There will be M x N total records.
#  There must be a blank space after each set of M records.
#  The M successive records might all have the same X value,
#  or, if not, they must represent successive points along a line on the surface.
#
#  View data from above.
#
set view map
#
#  Use equal units in both directions.
#
set size square
#
#  Turn off display of the surface Z(X,Y).
#
unset surface
#
#  Enable contour lines.
#
set contour
#
#  Request 20 contour lines.
#
set cntrparam levels 20
#
#  Contour levels will be printed with 1 decimal place.
#
set clabel "%.1f"
#
#  Request PNG output.
#
set term png
#
#  Name the PNG file.
#
set output "orbital.png"
#
#  Timestamp the plot.
#
set timestamp
#
#  Read the data file, display contours using lines.
#
splot "orbital_gnuplot.txt" with lines
#
#  Terminate.
#
quit