Return the induced subtree on the synthetic tree that relates a list of nodes.

  ott_ids = NULL,
  node_ids = NULL,
  label_format = NULL,



Numeric vector. OTT ids indicating nodes to be used as tips in the induced tree.


Character vector. Node ids indicating nodes to be used as tips in the induced tree.


Character. Defines the label type; one of “name”, “id”, or “name_and_id” (the default).


If specified, the function will write the subtree to a file in newick format.


additional arguments to customize the API call (see rotl for more information).


If no value is specified to the file argument (default), a phylogenetic tree of class phylo.

Otherwise, the function returns invisibly a logical indicating whether the file was successfully created.

Note that the tree returned when specifying a file name with the file argument is the “raw” Newick string returned by Open Tree of Life. This string contains singleton nodes, and therefore will be different from the tree returned as a phylo object which will not contain these singleton nodes.


Return a tree with tips corresponding to the nodes identified in the input set that is consistent with the topology of the current synthetic tree. This tree is equivalent to the minimal subtree induced on the draft tree by the set of identified nodes.


if (FALSE) { ## Result as a `phylo` object res <- tol_induced_subtree(ott_ids = c(292466, 267845, 316878, 102710)) ## Raw Newick string from Open Tree of Life tree_file <- tempfile(fileext = ".tre") tol_induced_subtree(ott_ids = c(292466, 267845, 316878, 102710), file=tree_file) }