Thresholds according to a tree object of the classes
treethresh or wtthresh.
# S3 method for treethresh
thresh(object, data, C, postmed=TRUE)
# S3 method for wtthresh
thresh(object, data, C, postmed=TRUE)An object of the class treethresh or
wtthresh according to which thresholding is to be
carried out.
The data to be thresholded. If object is of the class
treethresh, then object has to be an array (or
matrix) of exactly the same dimension as the data that was used to
estimate object. If object is of the class
wtthresh it has to be a list with elements of the
same name and dimensions as the list that was used to estimate
object. If no data object is given and if object is not
estimated directly from the \(\beta\) then the data used to
estimate object is used.
If C is given then the tree is pruned with constant
\(C\) (see the help of prune for details on the
pruning).
If postmed=TRUE then the thresholding is done by
returning the posterior median \(\mu_i|X_i\). If
postmed=FALSE then hard thresholding is performed.
thresh returns the thresholded data.