earth (version 2.5-1)

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 data frame, a matrix, or a vector with length equal to a multiple of the column length of the original input matrix x. Note that this is more flexible than the predict me

type

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

thresh

Threshold, 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 18.11