MFHD_bagplot: Computes the bagplot for the MFHD algorithm.
Description
This is an internal function not intended to be called
by the user. This function is a minimally modified adaptation of
"aplpack::bagplot". The main difference is that while
aplpack::bagplot returns the coordinate of the observations outside
the fence, this version returns the index of the observations outside
the fence. For more details, see help("aplpack::bagplot").
Usage
MFHD_bagplot(x, y,factor=3,approx.limit=300,verbose=FALSE)
Arguments
x
x values of a data set; in "bagplot": an object of class
"bagplot" computed by "compute.bagplot".
y
y values of the data set.
factor
Expanding factor of the fence.
approx.limit
if the number of data points exceeds "approx.limit" a
sample is used to compute some of the quantities; default:
300.
verbose
automatic commenting of calculations.
Value
Returns a list. Component "center" is a two dimensional
vector with the coordinate of the center. Component
outliers is a n-vector of binary values (the observations
outside the fence are assigned value 1).
References
P. J. Rousseeuw, I. Ruts, J. W. Tukey (1999): The bagplot: a
bivariate boxplot, The American Statistician, vol. 53, no. 4,
382--387.