Contour plots of the von Mises-Fisher distribution on the sphere

Description

Contour plots of the von Mises-Fisher distribution on the sphere.

Usage

vmf.contour(k)

Arguments

Details

The user specifies the concentration parameter only and not the mean direction or data. This is for illustration purposes only. The graph will always contain circles, as the von Mises-Fisher distribution is the analogue of a bivariate normal in two dimensions with a zero covariance.

Value

A contour plot of the von Mises-Fisher distribution.

Author(s)

Michail Tsagris

R implementation and documentation: Michail Tsagris <mtsagris@yahoo.gr> and Giorgos Athineou <athineou@csd.uoc.gr>

See Also

rvmf, vmf, vmf.kerncontour, kent.contour

Examples

par(mfrow = c(1,3) )
vmf.contour(1)
vmf.contour(5)
vmf.contour(10)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(Directional)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/Directional/vmf.contour.Rd_%03d_medium.png", width=480, height=480)
> ### Name: vmf.contour
> ### Title: Contour plots of the von Mises-Fisher distribution on the sphere
> ### Aliases: vmf.contour
> ### Keywords: von Mises-Fisher distribution Contour plot
> 
> ### ** Examples
> 
> par(mfrow = c(1,3) )
> vmf.contour(1)
> vmf.contour(5)
> vmf.contour(10)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>