getCommodityLevel: Get Commodity Level

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

Description

This function takes a commodity tree and provides the level of each commodity within that tree.

Usage

getCommodityLevel(commodityTree, parentColname, childColname,
  returnMinLevel = 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.
returnMinLevel	Logical. If a node exists at multiple processing levels, should the minimum level be returned? Or, should multiple records be returned for each level?

Value

A data.table with two columns: node (the ID of the commodity code) and level. A level of 0 indicates a top level node which is then processed into a level 1 node. Level 1 nodes are processed into level 2, and so on.

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