| Contour plot of a mixture of von Mises-Fisher distributions model {Directional} | R Documentation |
Contour plot of a mixture of von Mises-Fisher distributions model for spherical data only.
Description
Contour lines are produced of mixture model for spherical data only.
Usage
mixvmf.contour(u, mod)
Arguments
u |
A two column matrix. The first column is the longitude and the second is the latitude. |
mod |
This is mix.vmf object, actually it is a list. Run a mixture model and save it as mod for example, mod = mix.vmf(x, 3). |
Details
The contour plot is displayed with latitude and longitude in the axes. No Lambert projection is used here. This works for spherical data only which are given as longitude and latitude.
Value
A plot including: The points and the 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
Kurt Hornik and Bettina Grun (2014). movMF: An R Package for Fitting Mixtures of von Mises-Fisher Distributions http://cran.r-project.org/web/packages/movMF/vignettes/movMF.pdf
See Also
vmf.kerncontour, vmf.contour, mixvmf.mle
Examples
k <- runif(2, 4, 20)
prob <- c(0.4, 0.6)
mu <- matrix( rnorm(6), ncol = 3 )
mu <- mu / sqrt( rowSums(mu^2) )
x <- rmixvmf(200, prob, mu, k)$x
mod <- mixvmf.mle(x, 2)
y <- euclid.inv(x)
mixvmf.contour(y, mod)