earth (version 2.2-3)

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. Default is NULL, meaning return the fitted values from

type

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

thresh

Probability threshold from 0 to 1, default is .5. Only applies for binomial models with a binary response. 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