netsse.analys.spec.spec2d_to_spread_dist

netsse.analys.spec.spec2d_to_spread_dist(S2D, theta)

Converts the given 2-D wave spectrum into a directional spreading function and a 1-D wave spectrum.

Parameters:

• S2D (array_like of shape (...,Nf,Ntheta,...)) – Directional wave spectrum, as a function of frequency and wave direction (with arbitrary units).

• theta (array_like of shape (Ntheta,)) – Vector of wave headings (with arbitrary unit).

Returns:

• Sf (array_like of shape (…,Nf,…)) – One-sided variance spectrum of the waves, as a function of frequency.

• D (array_like of shape (…,Nf,Ntheta,…)) – Directional spreading function.

See also

spread_dist_to_spec2d

Converts the given 1-D wave spectrum and directional spreading function into a 2-D wave spectrum.

Example

>>> Sf, D = spec2d_to_spread_dist(S2D,theta)