Harald Kliems

A closer look at the data

Data viz with waffle charts, or not

The 2025 Census Bureau Population Estimates are out

I gave a talk at Mapping USA 2026

A look at OpenStreetMap data in Madison and Milwaukee

Another look at travel time estimates, now including the JND construction

Madison restaurants and their cuisine

A preliminary look at the data during the rush hour lane closure trial

Using American Community Survey data to look at car ownership in Madison over time.

Using the Google Maps API to collect travel time data during a traffic trial

Which counties have gained the most population between 2020 and 2024?

Using digital surface model data and `rayshader` to create a detailed rendering

Comparing fair market and assessed value in Madison

American Community Survey one-year estimates show commute mode share remains stable

Comparing pre-post data in Madison, Wisconsin

Do better bike networks lead to more bike commuters?

Pedestrian fatality data from 2001-2021 and how the time of fatal crashes varies over the day

From 67 to 15 F overnight??

A quick look at households with 4 cars or more.

Can Strava Metro data in Madison be a good indicator of overall bike traffic?

Mapping population growth since the 2020 census

Where did bike commuting grow, where did it shrink.

How long does it take Madisonians to get to work?

Places that start with "bad" (but not "badger"!)

Some maps and charts of 2015 and 2019 LEHD data

A look at several indicators of how many people biked (and took other means of transportation).

An R package for National Transit Database data

Some quick charts for Madison and how it compares to other US cities

Comparing transit accessibility with the r5r package

A comparison of Madison Metro ridership data released in the National Transit Database at different points in time.

Building age, property use, and architectural styles in Madison

Using `knitr` and `RMarkdown` for formatting form responses

A quick look at crash data to support efforts to no longer allow right turns on red.

Making a map of this year's season

What colors are most represented in the road names of Dane County?

Challenge 15: Food/drink

5-minute isochrones around Metro Transit bus stops

Working from home has seen an unprecedented boom, while biking stagnates.

Using R, {msgxtractor}, and R Markdown to wrangle a set of msg files

A look at housing permit data over time.

Comparing how far you can travel by bus, bike, and e-bike in Madison, before and after the bus network redesign

A quick time series chart of Metro ridership going back to 2002

A follow-up on a post on Metro bus boardings per stop in Madison (WI)

Using R, the rtweet package, and GitHub Actions to automate weekly tweets about traffic safety

What the locations of past crashes can and cannot tell us about future crashes

Policymakers proposed criteria for a where a shelter for homeless men in Madison (Wisconsin) could and couldn't go.

Web scraping and text analysis of the Society of Social Studies of Science's 2021 annual meeting panels.

How precincts voted about the questions whether Madison Alder should be a full-time job and how long terms should be

The `tidycensus` package got an exciting new function

What are the racial demographics of Madison's aldermanic districts