if FALSE, only two different symbols (outlier and no outlier) will be used
quan
Number of subsets used for the robust estimation of the covariance matrix. Allowed are values between 0.5 and 1., see covMcd
alpha
Maximum thresholding proportion, see arw
bw
if TRUE, symbols are in gray-scale (only if symb=TRUE)
pch2, cex2, col2
graphical parameters for the points
lcex.fac
factor for multiplication of symbol size (only if symb=TRUE)
…
further graphical parameters for the plot
Value
o
returns the outliers
md
the square root of the Mahalanobis distance
euclidean
the Euclidean distance of the scaled data
References
C. Reimann, P. Filzmoser, R.G. Garrett, and R. Dutter: Statistical Data Analysis
Explained. Applied Environmental Statistics with R. John Wiley and Sons, Chichester, 2008.