Angular Spreading

WaveSpec.AngularSpreading.DiscreteAngularSpreading — Type

DiscreteAngularSpreading{D<:UnivariateDistribution, T<:Real}

A structure to define angular spreading models for wave spectra.

distribution: A truncated univariate distribution defining the angular spreading.
nθ: Number of discrete angles to sample from the distribution.

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WaveSpec.AngularSpreading.DiscreteAngularSpreading — Method

DiscreteAngularSpreading(dist::UnivariateDistribution, a::Real, b::Real, nθ::Int)

Creates a DiscreteAngularSpreading by truncating the given univariate distribution between [a, b].

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WaveSpec.AngularSpreading.DiscreteAngularSpreading — Method

DiscreteAngularSpreading(θ)

Default constructor for a long-crested sea (no angular spreading) in θ direction. Sets nθ = 2 (2 samples to define a single bin) and uses a narrow Uniform distribution centered at θ.

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WaveSpec.AngularSpreading.DiscreteAngularSpreading — Method

DiscreteAngularSpreading(model_type::Symbol, μ, σ, a, b, nθ)

Factory constructor.

:uniform -> Uniform
:normal -> Gaussian
:cosinepow -> Cosine Power (2s).
:vonmises -> Circular Normal.
:donelan -> Donelan-Banner (sech²).

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WaveSpec.AngularSpreading.get_angles — Method

get_angles(sm::DiscreteAngularSpreading, rng=AbstractRNG)

Returns n_theta random angles sampled from the truncated distribution.

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WaveSpec.AngularSpreading.get_bandwidths — Method

get_bandwidths(sm::DiscreteAngularSpreading)

Returns the Δθ for the nθ - 1 bins.

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WaveSpec.AngularSpreading.get_central_angles — Method

get_central_angles(sm::DiscreteAngularSpreading)

Returns the nθ - 1 central angles between the sampled edges.

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WaveSpec.AngularSpreading.get_weights — Method

get_weights(sm::DiscreteAngularSpreading)

Returns the PDF values at central bins angles, corrected for discrete sampling.

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