sphkde.plot {pgKDEsphere}

sphkde.plot

Description

Function sphkde.plot provides a graphical representation of the parametrically guided kernel density estimator for spherical and circular data. For circular data, both linear and circular representations are available. For spherical data, an interactive 3D spherical representation is provided.

Usage

sphkde.plot(object, type = "sph", axis = TRUE, shrink = 1.2)

Arguments

object

Object of the class sphkde.

type

Character string giving the desired type of plot. For circular data, it can be "sph" for a circular representation or "line" for a linear representation. For spherical data the value "sph" is required.

axis

Logical; if TRUE, the axis are represented in the spherical representation. If FALSE, axis are not represented. Only for spherical representations.

shrink

Numeric parameter that controls the size of the plotted circle in the circular representations. Default is 1.3. Larger values shrink the circle, while smaller values enlarge the circle.

Details

See Alonso-Pena et al. (2023) for details.

Value

sphkde.plot is called for the side effect of drawing the plot.

References

Alonso-Pena, M., Claeskens, G. and Gijbels, I. (2023) Nonparametric estimation of densities on the hypersphere using a parametric guide. Under review.

Examples

library(movMF)
n<-200
mu<-matrix(c(0,0,1,0,0,-1),ncol=3,byrow=TRUE)
k<-c(7,2)
probs<-c(0.85,0.15)
datax<-rmovMF(n,k*mu,alpha=probs)
est<-sphkde.pg(datax,guide=TRUE)
sphkde.plot(est,type="sph")