RandomFields (version 3.0.5)

sp2RF: Transformation of an 'sp' object to an 'RFsp' object

Description

The function transforms an 'sp' object to an 'RFsp' object.

This explicite transformation is only necessary if several variables are repeated measurements are given.

Usage

sp2RF(sp, param=list(n=1, vdim=1))

Arguments

sp

an sp object

param

n number of repetitions; vdim the number of variables (multivariability)

Value

• sp2RF returns an object of class RFsp.

See Also

RFsp

Examples

RFoptions(seed=0) ## *ANY* simulation will have the random seed 0; set
##                   RFoptions(seed=NA) to make them all random again

p <- 100
n <- 5
x <- runif(p, 0, 1)
y <- runif(p, 0, 1)
z <- RFsimulate(RMexp(), x=x, y=y, n=n)
z1 <- z2 <- as.data.frame(z)
coordinates(z2) <- ~coords.x1 + coords.x2

emp.var <- RFempiricalvariogram(data=z)
emp.var1 <- RFempiricalvariogram(data=z1)
emp.var2 <- RFempiricalvariogram(data=sp2RF(z2, param=list(n=n, vdim=1)))

## results are all equal, except for the calls:
emp.var@call <- emp.var1@call <- emp.var2@call <- NULL
stopifnot(all.equal(emp.var, emp.var1))
stopifnot(all.equal(emp.var, emp.var2))
FinalizeExample()