ContControl-class {simFrame}

Class "ContControl"

Description

Virtual class for controlling contamination in a simulation experiment (used internally).

Objects from the Class

A virtual Class: No objects may be created from it.

Slots

target:

Object of class "OptCharacter"; a character vector specifying specifying the variables (columns) to be contaminated, or NULL to contaminate all variables (except the additional ones generated internally).

epsilon:

Object of class "numeric" giving the contamination levels.

grouping:

Object of class "character" specifying a grouping variable (column) to be used for contaminating whole groups rather than individual observations.

aux:

Object of class "character" specifying an auxiliary variable (column) whose values are used as probability weights for selecting the items (observations or groups) to be contaminated.

Extends

Class "VirtualContControl", directly. Class "OptContControl", by class "VirtualContControl", distance 2.

Accessor and mutator methods

In addition to the accessor and mutator methods for the slots inherited from "VirtualContControl", the following are available:

getGrouping

signature(x = "ContControl"): get slot grouping.

setGrouping

signature(x = "ContControl"): set slot grouping.

getAux

signature(x = "ContControl"): get slot aux.

setAux

signature(x = "ContControl"): set slot aux.

Methods

In addition to the methods inherited from "VirtualContControl", the following are available:

contaminate

signature(x = "data.frame", control = "ContControl"): contaminate data.

show

signature(object = "ContControl"): print the object on the R console.

UML class diagram

A slightly simplified UML class diagram of the framework can be found in Figure 1 of the package vignette An Object-Oriented Framework for Statistical Simulation: The R Package simFrame. Use vignette("simFrame-intro") to view this vignette.

Note

The slot grouping was named group prior to version 0.2. Renaming the slot was necessary since accessor and mutator functions were introduced in this version and a function named getGroup already exists.

Author(s)

Andreas Alfons

References

Alfons, A., Templ, M. and Filzmoser, P. (2010) An Object-Oriented Framework for Statistical Simulation: The R Package simFrame. Journal of Statistical Software, 37(3), 1–36. doi: 10.18637/jss.v037.i03.

See Also

"DCARContControl", "DARContControl", "VirtualContControl", contaminate

Examples

showClass("ContControl")