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

In RandomFields: Simulation and Analysis of Random Fields

Description

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

This explicit transformation is only necessary if several variables and 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.

Note

The two options varnames and coordnames, cf. section ‘coords’ in RFoptions, might be useful.

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

stopifnot(all.equal(emp.var, emp.var1))
stopifnot(all.equal(emp.var, emp.var2))

RandomFields documentation built on Jan. 19, 2022, 1:06 a.m.