Takes a fitted pffr-object produced by pffr() and produces
predictions given a new set of values for the model covariates or the original
values used for the model fit. Predictions can be accompanied by standard errors,
based on the posterior distribution of the model coefficients. This is a wrapper
function for predict.gam().
# S3 method for pffr
predict(object, newdata, reformat = TRUE, type = "link", se.fit = FALSE, ...)If type == "lpmatrix", the design matrix for the supplied covariate values in long format.
If se == TRUE, a list with entries fit and se.fit containing fits and standard errors, respectively.
If type == "terms" or "iterms" each of these lists is a list of matrices of the same dimension as the response for newdata
containing the linear predictor and its se for each term.
a fitted pffr-object
A named list (or a data.frame) containing the values of the
model covariates at which predictions are required.
If no newdata is provided then predictions corresponding to the original data
are returned. If newdata is provided then it must contain all the variables needed
for prediction, in the format supplied to pffr, i.e., functional predictors must be
supplied as matrices with each row corresponding to one observed function.
See Details for more on index variables and prediction for models fit on
irregular or sparse data.
logical, defaults to TRUE. Should predictions be returned in matrix form (default) or
in the long vector shape returned by predict.gam()?
see predict.gam() for details.
Note that type == "lpmatrix" will force reformat to FALSE.
see predict.gam()
additional arguments passed on to predict.gam()
Fabian Scheipl
Index variables (i.e., evaluation points) for the functional covariates are reused
from the fitted model object and cannot be supplied with newdata.
Prediction is always for the entire index range of the responses as defined
in the original fit. If the original fit was performed on sparse or irregular,
non-gridded response data supplied via pffr's ydata-argument
and no newdata was supplied, this function will
simply return fitted values for the original evaluation points of the response (in list form).
If the original fit was performed on sparse or irregular data and newdata was
supplied, the function will return predictions on the grid of evaluation points given in
object$pffr$yind.