grow {randomForest} | R Documentation |
Add additional trees to an existing ensemble of trees.
## S3 method for class 'randomForest': grow(x, how.many, ...)
x |
an object of class randomForest , which contains a
forest component. |
how.many |
number of trees to add to the randomForest
object. |
... |
currently ignored. |
An object of class randomForest
, containing how.many
additional trees.
The confusion
, err.rate
, mse
and rsq
components (as well as the corresponding components in the test
compnent, if exist) of the combined object will be NULL
.
Andy Liaw andy_liaw@merck.com
data(iris) iris.rf <- randomForest(Species ~ ., iris, ntree=50, norm.votes=FALSE) iris.rf <- grow(iris.rf, 50) print(iris.rf)