Node to a data.frameNode to a data.frame## S3 method for class 'Node':
as.data.frame(x, row.names = NULL, optional = FALSE, ...,
filterFun = function(x) TRUE)NULL or a character vector giving the row names for the data frame.
Missing values are not allowed.TRUE, setting row names and converting column names
(to syntactic names: see make.names) is optional.Node$Getmethoddata.frame. The function must
take a Node as an input, and it must return TRUE or FALSE, depending on whether the
Node and its subtree should