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Return the number of resolutions

Source: R/AllGeneric.R, R/basisfns.R
nres.Rd

Return the number of resolutions from a basis function object.

Usage

nres(b)

# S4 method for Basis
nres(b)

# S4 method for TensorP_Basis
nres(b)

# S4 method for SRE
nres(b)

Arguments

b

object of class Basis or SRE

See also

auto_basis for automatically constructing basis functions and show_basis for visualising basis functions.

Examples

library(sp)
set.seed(1)
d <- data.frame(lon = runif(n=500,min = -179, max = 179),
                lat = runif(n=500,min = -90, max = 90),
                z = rnorm(500))
coordinates(d) <- ~lon + lat
slot(d, "proj4string") = CRS("+proj=longlat")

### Now create basis functions on sphere
G <- auto_basis(manifold = sphere(),data=d,
                nres = 2,prune=15,
                type = "bisquare",
                subsamp = 20000)
#> NOTE: Zero process variability is implicitly enforced in regions where basis functions are pruned. Please use the option prune carefully: regions of data paucity are generally not reflective of regions of low process variability. Please set prune = 0 if unsure what to do.
nres(G)
#> [1] 2