geospt (version 0.4-9)

RBF.phi: RBF.phi

Description

generate the value associated with radial basis functions; gaussian (GAU), exponential (EXPON), trigonometric (TRI), thin plate spline (TPS), inverse multiquadratic (IM), and multiquadratic (M)

Usage

RBF.phi(distance, sigma, func)

Value

value obtained from the radial basis function generated with a distance, a sigma smoothing parameter, and a function "GAU", "EXPON", "TRI", "TPS", "IM" or "M"

Examples

data(preci) 
d1 <- dist(rbind(preci[1,],preci[2,])) 
RBF.phi(distance=d1, sigma=0.5, func="TPS")