CovNAClassic-class {rrcovNA} | R Documentation |
Class "CovNAClassic" - classical estimates of multivariate location and scatter for incomplete data (EM algorithm)
Description
The class CovNAClassic
represents an estimate of the
multivariate location and scatter of an incomplete data set. The class CovNAClassic
objects contain the classical estimates.
Objects from the Class
Objects can be created by calls of the form new("CovNAClassic", ...)
,
but the usual way of creating CovNAClassic
objects is a call to the function
CovNAClassic
which serves as a constructor.
Slots
call
:Object of class
"language"
cov
:covariance matrix
center
:location
n.obs
:number of observations used for the computation of the estimates
mah
:mahalanobis distances
method
:a character string describing the method used to compute the estimate: "Classic"
singularity
:a list with singularity information for the ocvariance matrix (or
NULL
of not singular)X
:data
Methods
- plot
signature(x = "CovNAClassic")
: plot the object
Author(s)
Valentin Todorov valentin.todorov@chello.at
References
Todorov V & Filzmoser P (2009), An Object Oriented Framework for Robust Multivariate Analysis. Journal of Statistical Software, 32(3), 1–47. <doi:10.18637/jss.v032.i03>.
Examples
data(bush10)
cv <- CovNAClassic(bush10)
cv
summary(cv)