summary.mcd: Summary Method for MCD objects

Description

summary method for class "mcd".

Usage

# S3 method for mcd
summary(object, ...)
# S3 method for summary.mcd
print(x, digits = max(3, getOption("digits") - 3),
     print.gap = 2, ...)

Value

summary.mcd returns an summary.mcd object, whereas the

print methods returns its first argument via

invisible, as all print methods do.

Arguments

object,x: an object of class "mcd" (or "summary.mcd"); usually, a result of a call to covMcd.
digits: the number of significant digits to use when printing.
print.gap: number of horizontal spaces between numbers; see also print.default.
...: further arguments passed to or from other methods.

Details

summary.mcd(), the S3 method, simply returns an (S3) object of class "summary.mcd" for which there's a print method:

print.summary.mcd prints summary statistics for the weighted covariance matrix and location estimates with weights based on MCD estimates. While the function print.mcd prints only the robust estimates of the location and the covariance matrix, print.summary.mcd will print also the correlation matrix (if requested in the call to covMcd with cor=TRUE), the eigenvalues of the covariance or the correlation matrix and the robust (“Mahalanobis”) distances.

Examples

Run this code

data(Animals, package = "MASS")
brain <- Animals[c(1:24, 26:25, 27:28),]
lbrain <- log(brain)
summary(cLB <- covMcd(lbrain))