Hello, I want to find the first i such that x[i] < y and x[i+1] >= y. Is there a way to do this without using a Python loop? I can't use np.searchsorted(), because my x array crosses y several times. Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C