getChildren: Get Children

In SWS-Methodology/faoswsUtil: A suite of function to support the FAO new Statistical Working System

Description

This function takes a commodity tree and a vector of node ids and returns a vector of these nodes as well as all the descendants (or ancestors) of these nodes.

Usage

getChildren(commodityTree, parentColname, childColname, topNodes,
  parentFlag = TRUE)

Arguments

commodityTree	A data.table with parent and child node IDs (corresponding to the IDs in nodes) which specify the commodity tree structure.
parentColname	The column name of commodityTree which contains the ID of the parent node.
childColname	The column name of commodityTree which contains the ID of the child node.
topNodes	Vector containing the node names/ids for which the children are sought.
parentFlag	Logical. If TRUE (default) this function gets all descendants. If FALSE, it gets all ancestors.

Value

A numeric vector containing topNodes as well as all descendants (or ancestors) of topNodes.

SWS-Methodology/faoswsUtil documentation built on May 9, 2019, 11:53 a.m.