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README.md

Overview

lorenzgini is an R package that calculates the Gini coefficient and plots Lorenz curves. It builds on the gini function from package DescTools, and extends this function to the generalized Gini as derived in:

Bernasco, W. and W. Steenbeek (2017). More places than crimes: Implications for evaluating the law of crime concentration at place. Journal of Quantitative Criminology. https://doi.org/10.1007/s10940-016-9324-7

Version

The most recent version of the package is:

Steenbeek, W., Bernasco, W. (2018). lorenzgini: generalized Gini for sparse data situations. R package version 0.1.2. URL: https://github.com/wsteenbeek/lorenzgini

Installation

You can install the package from this GitHub repository. You first need to install the remotes package.

install.packages("remotes")

Then install lorenzgini using the install_github function in the remotes package.

remotes::install_github("wsteenbeek/lorenzgini")

How to start

After loading the package with library(lorenzgini), see the documentation of the two functions (these include examples) by typing:

  • ?gini
  • ?lorenz

Vignette

The package includes a vignette explaining the background and the functions in lorenzgini in more detail.

By far the easiest way to view the vignette is this direct link, courtesy of the GitHub HTML Preview service:

If instead you want to access the vignettes from R itself you need to take a few additional steps, because remotes::install_github() does not build vignettes by default to save time and because it may require additional packages.

  1. Install the rmarkdown package with install.packages("rmarkdown")

  2. Install pandoc (and afterwards restart your computer)

  3. Then, install the package again but force building of the vignettes using remotes::install_github("wsteenbeek/lorenzgini", build_vignettes = TRUE, force = TRUE). This will take a few minutes.

Afterwards, you should be able to view which vignettes are available using:

browseVignettes("lorenzgini")

To directly read the vignettes rather than going through browseVignettes("lorenzgini") you can use:

vignette("lorenzgini", package = "lorenzgini")

License

This package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 3, as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU General Public License for more details.

A copy of the GNU General Public License, version 3, is available at https://www.r-project.org/Licenses/GPL-3

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