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

Value

sp2RF returns an object of class RFsp.

Note

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

Author(s)

Martin Schlather, schlather@math.uni-mannheim.de http://ms.math.uni-mannheim.de/de/publications/software

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
dimnames(emp.var@emp.vario) <- dimnames(emp.var1@emp.vario) <-
   dimnames(emp.var2@emp.vario) <- NULL
stopifnot(all.equal(emp.var, emp.var1))
stopifnot(all.equal(emp.var, emp.var2))