R Packages

Open source tools for data science and geospatial analysis

3 CRAN Packages
49+ Citations
10,000+ Monthly Downloads

I develop and maintain open source R packages that solve real-world data science challenges. All packages are published on CRAN, the official R package repository, and are actively maintained with comprehensive documentation.

Most Popular

zipcodeR

Work with U.S. ZIP code data including distance calculations, demographic information, and geographic boundaries.

Distance calculationsDemographics lookupGeographic boundariesReverse geocoding
10,000+ downloads
49 citations
CRAN platform
CRAN GitHub Docs

njgeo

Interface to New Jersey's official geocoding service for free address geocoding within R.

Batch geocodingReverse geocodingAddress candidatesNJ boundary data
CRAN platform
MIT license
Free cost
CRAN GitHub Docs

njtr1

Download and analyze New Jersey motor vehicle crash data from NJDOT for transportation research.

Automated downloadsData cleaningMultiple tablesTidy output
CRAN platform
2001-Present data Years
MIT license
CRAN GitHub Docs

Quick Install

R Console 
# Install any package from CRAN
install.packages("zipcodeR")
install.packages("njgeo")
install.packages("njtr1")

# Load the package
library(zipcodeR)
library(njgeo)
library(njtr1)

Package Comparison

Feature zipcodeR njgeo njtr1
Primary Use ZIP code analysis NJ geocoding Crash data
Geographic Scope United States New Jersey New Jersey
Data Source Embedded database NJOGIS API NJDOT files
Offline Support Yes No (API) Downloads data
License GPL-3 MIT MIT

Related Articles

New Jersey's official geocoding API now has a client for R

Using New Jersey's official state geocoding service just got easier! This post introduces njgeo, a new R package that simplifies working with New Jersey-specific spatial datasets.

Feb 4, 2022

Announcing zipcodeR: A new R package for ZIP code analysis

Introducing zipcodeR, an R package that makes it easy to work with ZIP code-level data in spatial analysis and demographics research

Mar 15, 2021

njtr1: An R Package to Download & Analyze New Jersey Car Crash Data

Introducing njtr1, an R package that automates the acquisition and cleaning of motor vehicle crash data published by the New Jersey Department of Transportation.

Jan 20, 2021

What's New in zipcodeR v0.2?

A review of the new features in zipcodeR v0.2, including congressional district lookups, FIPS code searches, and community-contributed improvements.

Dec 13, 2020

Frequently Asked Questions

What R packages has Gavin Rozzi created?

I have created three R packages available on CRAN: zipcodeR for ZIP code analysis, njgeo for New Jersey geocoding, and njtr1 for NJ traffic crash data. All are open source and free to use.

How do I install these R packages?

All packages can be installed from CRAN using install.packages(). For example: install.packages('zipcodeR').

Are these R packages free to use?

Yes, all R packages are open source and free to use. zipcodeR is licensed under GPL-3, while njgeo and njtr1 use the MIT license.

Which R package is most popular?

zipcodeR is the most popular with over 10,000 monthly downloads on CRAN and 49 peer-reviewed citations in journals including Nature and Cancer Discovery.

About the Author

Gavin Rozzi

Gavin Rozzi

Gavin Rozzi is a civic technologist, data scientist, and digital transformation executive based in New Jersey. He leads technology initiatives at the NJ Department of Community Affairs and has created widely-used open-source tools including OPRAmachine and zipcodeR.

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