predict.gl1ce

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Prediction Method for a `gl1ce' Object

This is a method for the generic function predict for class "gl1ce", typically produced from gl1ce(). When newdata is missing, the fitted values are extracted, otherwise returns new predictions.

Keywords
models
Usage
# S3 method for gl1ce
predict(object, newdata, type=c("link", "response"),
              se.fit = FALSE, …)
Arguments
object

a fitted gl1ce object.

newdata

a data frame containing the values at which predictions are required. This argument can be missing, in which case predictions are made at the same values used to compute the object. Only those predictors referred to in the right side of the formula in object need be present by name in newdata.

type

type of predictions, with choices "link" (the default), or "response". The default produces predictions on the scale of the additive predictors, and with newdata missing, predict() is simply an extractor function for this component of a gl1ce object. If "response" is selected, the predictions are on the scale of the response, and are monotone transformations of the additive predictors, using the inverse link function.

se.fit

logical indicating if standard errors should be returned as well. Not yet available.

further potential arguments passed to methods.

Value

a vector of predictions.

Warning

predict can produce incorrect predictions when the newdata argument is used if the formula in object involves data-dependent transformations, such as poly(Age, 3) or sqrt(Age - min(Age)).

Aliases
  • predict.gl1ce
Examples
# NOT RUN {
  ## start with
  example(gl1ce)
  predict(gl1c.E, new = esoph[1:7,])# type 'link'
  predict(gl1c.E, new = esoph[1:7,], type = "response")

  ## identities / consistency checks :
  stopifnot(predict(gl1c.E, type = "response") == fitted(gl1c.E),
            all.equal(predict(gl1c.E)[1:7],
                      as.vector(predict(gl1c.E, new = esoph[1:7,]))),
            all.equal(fitted(gl1c.E)[1:7],
                      as.vector(predict(gl1c.E, new = esoph[1:7,], type = "response")))
           )
# }
Documentation reproduced from package lasso2, version 1.2-20, License: GPL (>= 2)

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