These functions are provided for compatibility with older versions only, and may be defunct as soon as the next release.
1 2 3 4 5 6 7 8  sparseLTSGrid(x, ...)
## S3 method for class 'formula'
sparseLTSGrid(formula, data, ...)
## Default S3 method:
sparseLTSGrid(x, y, lambda, mode = c("lambda", "fraction"),
...)

x 
a numeric matrix containing the predictor variables. 
formula 
a formula describing the model. 
data 
an optional data frame, list or environment (or object coercible
to a data frame by 
y 
a numeric vector containing the response variable. 
lambda 
a numeric vector of nonnegative values to be used as penalty parameter. 
mode 
a character string specifying the type of penalty parameter. If

... 
additional arguments to be passed down, eventually to

sparseLTSGrid
is a wrapper function for sparseLTS
that only differs in the default values for the penalty parameter
lambda
.
Andreas Alfons
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