Contour plot of the Flexible Dirichlet distribution in S^2 {Compositional}R Documentation

Contour plot of the Flexible Dirichlet distribution in S^2

Description

Contour plot of the Flexible Dirichlet distribution in S^2.

Usage

fd.contour(alpha, prob, tau, n = 100, x = NULL, cont.line = FALSE)

Arguments

alpha

A vector of the non-negative α parameters.

prob

A vector of the clusters' probabilities. It must sum to one.

tau

The non-negative scalar tau parameter.

n

The number of grid points to consider over which the density is calculated.

x

This is either NULL (no data) or contains a 3 column matrix with compositional data.

cont.line

Do you want the contour lines to appear? If yes, set this TRUE.

Details

The user can plot only the contour lines of a Dirichlet with a given vector of parameters, or can also add the relevant data should they wish to.

Value

A ternary diagram with the points and the Flexible Dirichlet contour lines.

Author(s)

Michail Tsagris and Christos Adam.

R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Christos Adam pada4m4@gmail.com.

References

Ongaro A. and Migliorati S. (2013). A generalization of the Dirichlet distribution. Journal of Multivariate Analysis, 114, 412–426.

Migliorati S., Ongaro A. and Monti G. S. (2017). A structured Dirichlet mixture model for compositional data: inferential and applicative issues. Statistics and Computing, 27, 963–983.

See Also

fd.est, norm.contour, fold.contour, bivt.contour, comp.kerncontour, mixnorm.contour

Examples

fd.contour(alpha = c(10, 11, 12), prob = c(0.25, 0.25, 0.5), tau = 4)

[Package Compositional version 5.2 Index]