void latsph_c ( SpiceDouble radius,
SpiceDouble lon,
SpiceDouble lat,
SpiceDouble * rho,
SpiceDouble * colat,
SpiceDouble * lons )
Convert from latitudinal coordinates to spherical coordinates.
None.
CONVERSION, COORDINATES
VARIABLE I/O DESCRIPTION
  
radius I Distance of a point from the origin.
lon I Angle of the point from the XZ plane in radians.
lat I Angle of the point from the XY plane in radians.
rho O Distance of the point from the origin.
colat O Angle of the point from positive z axis (radians).
lons O Angle of the point from the XZ plane (radians).
radius Distance of a point from the origin.
lon Angle of the point from the XZ plane in radians.
lat Angle of the point from the XY plane in radians.
rho Distance of the point from the origin.
colat Angle between the vector from the origin to the point
and the positive z axis in radians. `colat' is computed
as pi/2  `lat'.
lons Angle of the point from the XZ plane (radians). `lons'
is set equal to `lon'.
None.
Error free.
None.
This routine returns the spherical coordinates of a point
whose position is input in latitudinal coordinates.
Latitudinal coordinates are defined by a distance from a central
reference point, an angle from a reference meridian, and an angle
above the equator of a sphere centered at the central reference
point.
Spherical coordinates are defined by a distance from a central
reference point, an angle from a reference meridian, and an angle
from the zaxis.
Colatitude is obtained by subtracting latitude from HALFPI()
Radius and longitude mean the same thing in both latitudinal
and spherical coordinates. The table below lists lat
corresponding lat in terms of degrees.
lat lat
 
0 90
20 70
45 45
30 120
90 0
45 135
None.
None.
W.L. Taber (JPL)
CSPICE Version 1.0.2, 26JUL2016 (BVS)
Minor headers edits.
CSPICE Version 1.0.1, 13DEC2005 (EDW)
Corrected typo in Deatiled_Output, substituted
"colat" for "lat."
CSPICE Version 1.0.0, 08FEB1998 (EDW)
latitudinal to spherical coordinates
