rhoSph: Spherical Correlation Function

In geoCount: Analysis and Modeling for Geostatistical Count Data

Description

This function calculates the spherical correlation.

Usage

rhoSph(u, a, k=NULL)

Arguments

u	a value which indicates the distance
a	a value which indicates the scale parameter, φ
k	useless (it is kept here only in the purpose of maintaining consistent argument format to other corrlelation functions)

Details

The function is \; \;ρ (u)= 1 - 1.5*(u/φ) + 0.5*(-u/φ)^3 \; \;.

Value

A value of the correlation.

Author(s)

Liang Jing [e-mail]

See Also

rhoPowerExp, rhoMatern, U2Z, loc2U.

Examples

## Not run: 
  rhoSph(0.1, a=0.2)                  

## End(Not run)

geoCount documentation built on May 2, 2019, 12:38 a.m.