predict.pffr for alternative options.## S3 method for class 'pffr':
fitted(object, reformat = TRUE, ...)pffr-objectn x yindex matrix form
(default for regular grid data) or in the shape of the
originally supplied ydata argument or (default for
sparse/irregular data), or, if data.frame
(sparse/irregular data) or vector (if !reformat)
of fitted values