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Use SciPy cumulative trapezoid for equal-energy waves #667

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Merged
cmccomb merged 1 commit into from
Oct 24, 2026
Merged

Use SciPy cumulative trapezoid for equal-energy waves #667

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6 changes: 2 additions & 4 deletions wecsim/environment/irregularWave.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@

import numpy as np
from randomgen import ThreeFry
from scipy.integrate import cumulative_trapezoid
from scipy.interpolate import CubicSpline, RegularGridInterpolator
from scipy.io import loadmat

Expand Down Expand Up @@ -339,10 +340,7 @@ def _equal_energy_components(
d_omega = np.full(count, (omega_max - omega_min) / (count - 1))
spectral_amplitude = spectrum_hz / np.pi
else:
df = frequency[1] - frequency[0]
integrated = np.empty(len(frequency))
integrated[0] = 0.0
integrated[1:] = np.cumsum((spectrum_hz[:-1] + spectrum_hz[1:]) * df / 2)
integrated = cumulative_trapezoid(spectrum_hz, frequency, initial=0)
energy_per_bin = integrated[-1] / (count + 1)
boundaries = np.zeros(count + 2, dtype=int)
for k in range(1, count + 2):
Expand Down
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