func ExampleEclipticPrecessor_ReduceElements() {
// Example 24.a, p. 160.
ele := &elementequinox.Elements{
Inc: 47.122 * math.Pi / 180,
Peri: 151.4486 * math.Pi / 180,
Node: 45.7481 * math.Pi / 180,
}
JFrom := base.JDEToJulianYear(base.BesselianYearToJDE(1744))
JTo := base.JDEToJulianYear(base.BesselianYearToJDE(1950))
p := precess.NewEclipticPrecessor(JFrom, JTo)
p.ReduceElements(ele, ele)
fmt.Printf("i = %.4f\n", ele.Inc*180/math.Pi)
fmt.Printf("Ω = %.4f\n", ele.Node*180/math.Pi)
fmt.Printf("ω = %.4f\n", ele.Peri*180/math.Pi)
// Output:
// i = 47.1380
// Ω = 48.6037
// ω = 151.4782
}
func ExampleEclipticPrecessor_ReduceElements() {
// Example 24.a, p. 160.
ele := &elementequinox.Elements{
Inc: unit.AngleFromDeg(47.122),
Peri: unit.AngleFromDeg(151.4486),
Node: unit.AngleFromDeg(45.7481),
}
JFrom := base.JDEToJulianYear(base.BesselianYearToJDE(1744))
JTo := base.JDEToJulianYear(base.BesselianYearToJDE(1950))
p := precess.NewEclipticPrecessor(JFrom, JTo)
p.ReduceElements(ele, ele)
fmt.Printf("i = %.4f\n", ele.Inc.Deg())
fmt.Printf("Ω = %.4f\n", ele.Node.Deg())
fmt.Printf("ω = %.4f\n", ele.Peri.Deg())
// Output:
// i = 47.1380
// Ω = 48.6037
// ω = 151.4782
}