Planet image rendering into the X root window
Xplanet was inspired by Xearth, which renders an image of the earth into the
X root window. All of the major planets and most satellites can be drawn,
similar to the Solar System Simulator. A number of different map projections
are also supported, including azimuthal, Lambert, Mercator, Mollweide,
orthographic, and rectangular.
Specify an arc file to be plotted against the background stars. Each
line in the file must have the following syntax:
dec1 ra1 dec2 ra2
where declination is in degrees and right ascension is in hours. This
option has no effect if -projection is specified.
When drawing an arc, draw line segments that are spacing degrees
apart. The default is 0.1 degrees. Line s
Each line should have the following syntax:
lat1 lon1 lat2 lon2
where all values are in degrees. In addition, the keywords "color"
and "spacing" are supported as in the example below:
33.9 -118.4 52.3 4.8 color=SpringGreen spacing=0.5 # LAX-AMS
Valid values for "color" are the same as for the -color option. The
value for spacing defines the distance between dots on the great arc.
The config file is divided into sections which start with a line like
[body], where body is either default (everything in this section,
which should be at the top, applies to all bodies unless overridden
later), or a body name like saturn.
Be careful to specify options that apply to only one planet under that
planet's section, and not under [default]. For example, a common
mistake is to put clou
Put JPL digital ephemeris files (DE200, DE405, or DE406) here to use
for computing planetary positio
The format of each line is generally latitude, longitude, string, as
in the example below:
The format of an origin file is
YYYYMMDD.HHMMSS range lat lon [localtime]
Where the date is in G
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