plot2sphere
:
Draws a sphere plot
plot2sphere
draws plots in an isotropic 3-dimensional space
using spherical polar coordinates.
The plotting volume is a cube,
which is viewed from the outside and usually bounded by a
wire frame annotated by Cartesian coordinates.
This viewing cube is not necessarily centered on the coordinate origin.
This plotting geometry is like that used by
plot2cube
,
but the coordinate unit size is always the same in the three dimensions,
and the coordinates are specified differently.
Positional coordinates are specified as
lon
, lat
, r
triples,
e.g.:
plot2sphere layer1=mark in1=survey.fits lon1=RA lat1=DEC r1=REDSHIFT
Content is added to the plot by specifying
one or more plot layers using the
layerN
parameter.
The N
part is a suffix applied to
all the parameters affecting a given layer;
any suffix (including the empty string) may be used.
Available layers for this plot type are:
mark
,
size
,
sizexy
,
link2
,
mark2
,
poly4
,
mark4
,
polygon
,
area
,
central
,
label
,
arealabel
,
line3d
,
contour
,
spheregrid
.