sub_btree: Sub btree
In ben519/btree: Binary Tree Wrangling

Description Usage Arguments Details Examples

Extract a sub-btree from either an existing btree, or to a specified depth

1	sub_btree(btree, nodeId = NULL, depth = NULL)

`btree`	A data.table object that is a btree
`nodeId`	Id of the node which should be the root node in the sub-btree
`depth`	subset btree by nodes <= this depth

Returns a btree, data.table

library(data.table)
mytree <- make_btree(nodeIds=c(1,2,3,4,5,6,7), parentNodeIds=c(NA,1,1,2,2,3,3))
sub_btree(mytree, nodeId=3)
sub_btree(mytree, depth=1)