Category Archives for Open Source

New Resource for Learning Choroplethr

Last week I had the honor of giving a 1 hour talk about Choroplethr at a private company. When this company reached out to me about speaking there, I originally planned to give the same talk I gave at CDC two years ago. But as I reviewed the CDC talk, I realized two things: My […]

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Bug when Creating Reference Maps with Choroplethr

Last week the Census Bureau published a free course I created on using Choroplethr to map US Census Data. Unfortunately, a few people have reported problems when following one of the examples in the course. This post describes that issues and provides instructions for working around it. Where does the bug occur? The bug occurs […]

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New Free R Course on!

Today I am happy to announce that a new free course on Choroplethr – Mapping Census Bureau Data in R with Choroplethr – is available on Census Academy, the US Census Bureau’s new training platform! (Choroplethr is a suite of R packages I created for mapping demographic statistics).This course is a more in-depth version of Learn […]

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“A Guide to Working With Census Data in R” is now Complete!

Two weeks ago I mentioned that I was clearing my calendar until I finished writing A Guide to Working with Census Data in R. Today I’m happy to announce that the Guide is complete! I even took out a special domain for the project: The Guide is designed to address two problems that people who […]

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New Version of!

Last year I decided to take out the domain I used it to host information about Choroplethr, my suite of R packages for mapping demographic statistics. A year and a half later, I’ve made the first significant change to the site! The old version of was structured as a series of essays that […]

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Choroplethr v3.6.2 is now on CRAN

A new version of Choroplethr is now on CRAN! You can get it by typing the following from the R Console:

I encourage all Choroplethr users to install this new version! Overview A new version of ggplot2 will be released shortly. This new version of ggplot2 introduces many new features. These new features, however, […]

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New Version of ggplot2

I just received a note from Hadley Wickham that a new version of ggplot2 is scheduled to be submitted to CRAN on June 25. Here’s what choroplethr users need to know about this new version of ggplot2. Choroplethr Update Required The new version of ggplot2 introduces bugs into choroplethr. In particular, choroplethr does not pass […]

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My Proposal to the R Consortium

I recently submitted a Proposal to the R Consortium. I decided to share this proposal on my blog for two reasons: To raise awareness of an opportunity I see in the R ecosystem. To raise awareness of the R Consortium as a funding source for R projects. I first learned about the R Consortium when […]

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Update: “Difficult to Reproduce Choroplethr Bug” Isolated and Fixed

Yesterday I wrote that I’ve received a number of choroplethr bug reports recently that I simply cannot reproduce. Due to a large number of people replying with their system information, along with whether or not they were able to reproduce the bug, I was able to track it down. Thank you to everyone who helped! […]

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Difficult to Reproduce Choroplethr Bug: Can You Help?

Since November 2017 I have received three bug reports from users who see this error when running any command in the choroplethr package:

Normally when someone reports a choroplethr bug that I cannot reproduce I recommend they do the following: Update to the latest version of R and RStudio. Type “update.packages(ask=FALSE)” to get the […]

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