3.7. Path #
A spherical path is a concatenation of spherical lines. Use cases are:
rivers on earth
trajectories of planets or comets on the sky plane
Paths within pgSphere are simplified lists of positions. The input syntax is :
{pos1,pos2[,pos3[,pos4[,...]]]}Note
The distance between 2 sequent positions has to be less than 180° and greater than zero.
At least 2 positions are required.
Example 3.10. Path input example
A path going from (10d,0d) to
(80d,30d) via
(45d,15d).
sql> SELECT spath '{ (10d,0d),(45d,15d),(80d,30d) } ';