Transformation of an 'sp' object to an 'RFsp' object
The function transforms an 'sp' object to an 'RFsp' object.
This explicit transformation is only necessary if several variables and repeated measurements are given.
sp2RF(sp, param=list(n=1, vdim=1))
sp |
an ‘sp’ object |
param |
|
The two options varnames and coordnames,
cf. section ‘coords’ in RFoptions,
might be useful.
Martin Schlather, schlather@math.uni-mannheim.de, https://www.wim.uni-mannheim.de/schlather/
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))
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