FD.ternaryplot: Ternary Plot of a Flexible Dirichlet
In FlexDir: Tools to Work with the Flexible Dirichlet Distribution

Description Usage Arguments Details References See Also Examples

Ternary plot and contour lines of the density function of a fitted Flexible Dirichlet distribution.

1	FD.ternaryplot(x, zoomed = T, showgrid = T, showdata = T, nlevels = 10)

`x`	an object of class FDfitted, usually the result of `FD.estimation`.
`zoomed`	if `TRUE`, shows only the area where most of the density is concentrated. If `FALSE`, shows the whole area of the ternary diagram.
`showgrid`	if `TRUE`, shows the axis and the labels. If `FALSE`, only the graph is printed.
`showdata`	if `TRUE`, prints the data points. If `FALSE`, shows only the contour lines.
`nlevels`	approximate number of contour lines to be drawn.

The number of variables in the fitted model must be 3 to draw a ternary plot.

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. (2016) A structured Dirichlet mixture model for compositional data: inferential and applicative issues. Statistics and Computing, doi:10.1007/s11222-016-9665-y.

FD.estimation, FD.rightplot, FD.marginalplot

data <- FD.generate(n=20,a=c(12,7,15),p=c(0.3,0.4,0.3),t=8)
data
results <- FD.estimation(data, normalize=TRUE,iter.initial.SEM = 5,iter.final.EM = 10)
results
FD.ternaryplot(results)
FD.ternaryplot(results, zoomed=FALSE, showgrid=TRUE, showdata=FALSE, nlevels=3)