psi_func-class


  The class <code>"psi_func"</code> is used to store $psi$
  functions for M-estimation.  In particular, an object of the class
  contains $rho(x)$, its derivative
  $psi(x)$, the weight function $\psi(x)/x$, and
  first derivative of $\psi$, <code>Dpsi = </code> $\psi'(x)$.


robust

classes

"Essential" Robust Statistics.
Tools allowing to analyze data with robust methods.  This includes
regression methodology including model selections and multivariate
statistics where we strive to cover the book "Robust Statistics,
Theory and Methods" by 'Maronna, Martin and Yohai'; Wiley 2006.

Martin Maechler

robustbase

Basic Robust Statistics

psi_func-class function

Objects can be created by calls of the form <code>new("psi_func", ...)</code>,
  but preferably by <code><a rd-options="" href="/link/psiFunc?package=robustbase&version=0.92-7" data-mini-rdoc="robustbase::psiFunc">psiFunc</a>(...)</code>.

Objects from the Class

Slots

Currently, only <code><a rd-options="" href="/link/chgDefaults?package=robustbase&version=0.92-7" data-mini-rdoc="robustbase::chgDefaults">chgDefaults</a>()</code>, <code><a rd-options="=plot-methods" href="/link/plot?package=robustbase&version=0.92-7&to=%3Dplot-methods" data-mini-rdoc="=plot-methods::plot">plot</a>()</code>
  and <code>show()</code>.

Methods

Objects can be created by calls of the form <code>new("psi_func", ...)</code>,
  but preferably by <code><a rd-options='' href='psiFunc'>psiFunc</a>(...)</code>.

Currently, only <code><a rd-options='' href='chgDefaults'>chgDefaults</a>()</code>, <code><a rd-options='=plot-methods' href='plot'>plot</a>()</code>
  and <code>show()</code>.

psi_func-class: Class of "Psi Functions" for M-Estimation

Description

Arguments

Objects from the Class

Slots

Methods

See Also

Examples