plotInbag {rfPermute}

Plot Inbag distribution

Description

Plot distribution of the fraction of trees that samples were inbag in the Random Forest model.

Usage

plotInbag(x, bins = 10, replace = TRUE, sampsize = NULL, plot = TRUE)

Arguments

x

a rfPermute or randomForest model object..

bins

number of bins in histogram.

replace

was sampling done with or without replacement?

sampsize

sizes of samples drawn. Either a single value or vector of sample sizes as long as the number of classes.

plot

display the plot?

Value

the ggplot2 object is invisibly returned.

Note

Red vertical lines on the plot denote the expected inbag rate(s). These rates are based on the values of replace and sampsize supplied. If not specified, they are set to the randomForest defaults. If this is not the same as the arguments used to run the model, there will be a mismatch in the location of these indicator lines and the inbag frequency distribution.

Author(s)

Eric Archer [e-mail]

Examples

library(randomForest)
data(mtcars)

sampsize = c(5, 5)

rf <- randomForest(factor(am) ~ ., data = mtcars, ntree = 10)
plotInbag(rf)

rf <- randomForest(factor(am) ~ ., data = mtcars, ntree = 1000)
plotInbag(rf)

rf <- randomForest(factor(am) ~ ., data = mtcars, ntree = 10000)
plotInbag(rf)