earth (version 2.3-0)

predict.earth: Predict with an "earth" model

Description

Predict with an earth model.

Usage

## S3 method for class 'earth':
predict(object = stop("no 'object' arg"), newdata = NULL,
                        type = c("link", "response", "earth", "class", "terms"),
                        thresh = .5, trace = FALSE, ...)

Arguments

object

An earth object. This is the only required argument.

newdata

Make predictions using newdata, which can be a dataframe, a matrix, or a vector with length equal to a multiple of the row length of the original input matrix x. Note that this more flexible than the predict methods f

type

Type of prediction. One of "link" (default), "response", "earth", "class", or "terms". See the Note below.

thresh

Threshold, typically a value between 0 and 1 when predicting a probability. Only applies when type="class"). Default is .5. See the Note below.

trace

Default FALSE. Set to TRUE to see which data, subset, etc. predict.earth is using.

...

Unused, but provided for generic/method consistency.

Value

• The predicted values (a matrix for multiple response models). Except if type="terms", then a matrix with each column showing the contribution of a predictor.

See Also

earth, predict

Examples

data(trees)
a <- earth(Volume ~ ., data = trees)
predict(a)           # same as a$fitted.values
predict(a, c(10,80)) # yields 17.76888