x0
$\in R^2$ for the $n$ Fourier frequencies.kern(x0, h, freq)
n
$\times$ 2 matrix with the n
Fourier frequencies, where n
is the number of points in the analyzed lattice.x0
$\in R^2$ for the $n$ Fourier frequencies. In particular the $k$-th vector element is
$$e^{-\frac{(\boldsymbol{\omega}_k - x_0)^T(\boldsymbol{\omega}_k - x_0)}{h^2}}.$$scICA
, locmulti
, grad
, hess
.