*** Work in progress ***
The Hierarchy package aims to simplify the work with hierarchical data structures in R. It is inspired by Ancestry - a Ruby and Rails gem/plugin by Stefan Henzen. Hierarchy is created and maintained by Thomas Reinholdsson ([email protected]).
Use devtools for easy installation
library(devtools)
install_github('Hierarchy', 'reinholdsson')
Let's say that we have a data frame cpi of the following structure:
id name weight consumption
1 KPI
1.1 Inventarier
1.1.1 Möbler
1.1.1.1 Matbord 1.48 40000
1.1.1.2 Säng 2.90 20000
1.1.1.3 Taklampa 2.21 5000
1.2 Hälso- och sjukvård
1.2.1 Läkemedel
1.2.1.1 Sjukvårdsartiklar 0.98 10000
1.2.1.2 Naturläkemedel 3.03 12000
Then we define the hierarchical structure to be a path enumeration
a <- Hierarchy:::path_enum$new(cpi, metrics = c("weight", "consumption"))
Get node from id
a$node("1.1")
Check if it has a parent
a$has_parent("1.1")
Get children ids
a$children_ids("1.1")
Get children
a$children("1.1")
Get all descendants
a$descendants("1.1")
Get endnodes (the end points of the subtree)
a$endnodes("1.1")
Sum of endnodes:
a$aggregate("1.1", function(x) sum(x, na.rm = TRUE))
# id name weight consumption
# 1.1 Inventarier 6.59 65000
The master branch is the development branch, and might therefore be a bit instable. Stable releases are marked with tags, e.g. v1.0, where the first number represents a new stable release and the second number imply new bug fixes within the given release version.
Hierarchy is licensed under the AGPLv3, the terms of which are included in the file LICENSE.