kernels | R Documentation |
Kernel functions for creating kernel based weights with st_kernel_weights()
kernels
An object of class list
of length 5.
Supported kernels are below.
Formulas come from Anselin & Morrison's notes.
uniform
: K(z) = 1/2 for |z|<1
triangular
: K(z) = (1-|z|) for |z| < 1
epanechnikov
: K(z) = (3/4)(1-z^2) for |z| < 1
quartic
: K(z) = (15/16)*(1-(z/threshold)^2^)2 for |z| < 1
gaussian
: K(z) = (2pi)^{1/2} * exp(-z^2/2)
a list of length 5 where each element is a kernel function.
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