Minimum Volume Ellipsoid Object

DESCRIPTION:

These are objects of class mve They represent the minimum volume ellipsoid of a data set.

GENERATION:

This class of objects is returned from the cov.mve function.

METHODS:

The "mve" class of objects has methods for the following generic functions:

plot, print, summary.

STRUCTURE:

The following components must be included in a legitimate mve object.

VALUE:

cov
the estimated covariance matrix.
center
an estimate for the location of the data.
n.obs
the number of data observations.
cor
the estimated correlation matrix for the data. This is only returned if the input cor is TRUE.
method
a character string that contains the number of samples taken and the number that were singular.
objective
vector of the objective for each component of the output stock. These are in increasing order.
stock
list of length nkeep containing vectors of observation numbers. This is only returned for multivariate data sets.
births.n
the number of genetic births that were performed. This is only returned for multivariate data sets.
mve.wt
weights based on the estimated covariance matrix and the estimated location of the data.
X
same as the input data of cov.mve.default or the data matrix. X is invisible for printing methods.
model
optionally the model frame, if model=TRUE (in cov.mve.formula).
x
optionally the model matrix, if x=TRUE (in cov.mve.formula).

SEE ALSO:

, .