RMaskey: Askey model

Description Usage Arguments Details Value References See Also Examples

View source: R/RMmodels.R

Description

Askey's model

C(x)= (1-x)^α 1_{[0,1]}(x)

Usage

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RMaskey(alpha, var, scale, Aniso, proj)
RMtent(var, scale, Aniso, proj)

Arguments

alpha

a numerical value in the interval [0,1]

var,scale,Aniso,proj

optional arguments; same meaning for any RMmodel. If not passed, the above covariance function remains unmodified.

Details

This covariance function is valid for dimension d if α ≥ (d+1)/2. For α=1 we get the well-known triangle (or tent) model, which is only valid on the real line.

Value

RMaskey returns an object of class RMmodel.

References

Covariance function

Applications as covariance function

Tail correlation function (for α ≥ [d / 2] + 1)

See Also

RMmodel, RMbigneiting, RMgengneiting, RMgneiting, RFsimulate, RFfit.

Examples

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

model <- RMtent()
x <- seq(0, 10, 0.02) 
plot(model)
plot(RFsimulate(model, x=x))

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