MDSplot | R Documentation |

Plot the scaling coordinates of the proximity matrix from randomForest.

MDSplot(rf, fac, k=2, palette=NULL, pch=20, ...)

`rf` |
an object of class |

`fac` |
a factor that was used as response to train |

`k` |
number of dimensions for the scaling coordinates. |

`palette` |
colors to use to distinguish the classes; length must be the equal to the number of levels. |

`pch` |
plotting symbols to use. |

`...` |
other graphical parameters. |

The output of `cmdscale`

on 1 - `rf$proximity`

is
returned invisibly.

If `k > 2`

, `pairs`

is used to produce the
scatterplot matrix of the coordinates.

Robert Gentleman, with slight modifications by Andy Liaw

`randomForest`

set.seed(1) data(iris) iris.rf <- randomForest(Species ~ ., iris, proximity=TRUE, keep.forest=FALSE) MDSplot(iris.rf, iris$Species) ## Using different symbols for the classes: MDSplot(iris.rf, iris$Species, palette=rep(1, 3), pch=as.numeric(iris$Species))

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