Nutze Skyfield fuer praezisere Daemmerungsberechnung

2026-07-13 19:35:39 +02:00
parent dc5292735f
commit 97357a88e0
1092 changed files with 370248 additions and 61 deletions
@@ -0,0 +1,32 @@
+from skyfield.curvelib import Splines, build_spline_given_ends
+
+def test_spline_and_derivative():
+    parameters = 10, 12, 2.0, 3.0, 5.0, 7.0
+    x = 8.0, 9.0, 10.0, 11.0, 12.0
+    expected_values = 3.0, 5.0, 7.0, 10.5, 17.0
+    expected_slope = 2.5, 1.75, 2.5, 4.75, 8.5
+
+    # Does the Spline class work?
+
+    curve = Splines(parameters)
+    assert tuple(curve(x)) == expected_values
+    assert tuple(curve.derivative(x)) == expected_slope
+
+    # Can we rebuild the parameters from its endpoints and slopes?
+
+    parameters2 = build_spline_given_ends(
+        10, curve(10), curve.derivative(10),
+        12, curve(12), curve.derivative(12))
+
+    assert parameters == parameters2
+
+    # If we rebuild the spline around different bounds, does it still
+    # produce the same curve?
+
+    for lower, upper in (8,10), (8,9), (21,23):
+        parameters3 = build_spline_given_ends(
+            lower, curve(lower), curve.derivative(lower),
+            upper, curve(upper), curve.derivative(upper))
+        curve3 = Splines(parameters3)
+        assert tuple(curve3(x)) == expected_values
+        assert tuple(curve3.derivative(x)) == expected_slope