ellipse: Create multivariate ellipse.
Randomly sample points from a probability contour of a multivariate normal.
Description
There are two ways to use this function. You can either supply
a data set for which a multivariate normal ellipse will be drawn
or you can supply the mean vector, covariance matrix and number
of dimensions yourself.
Usage
ellipse(data, npoints = 1000, cl = 0.95, mean = colMeans(data), cov = var(data), df = nrow(data))
Arguments
npoints
number of points to sample
cl
proportion of density contained within ellipse
cov
variance-covariance matrix
df
degrees of freedom used for calculating F statistic