The Washington Post has compiled the first database of slaveholding members of Congress by examining thousands of pages of census records and historical documents

A list of recommended research papers and other readings on data visualization

Stat Breakfasts 2018

Simple parliament plots using ggplot2

Code examples for “Interactive Data Visualization for the Web”

R interface to D3 chord diagrams

Graphs for Everyone

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

A step-by-step design guide for data visualizations

Small examples of data driven graphics -- to be used as starting points...

OSM powered tool for extracting and visualizing road and building data for all capitals of the world

An extension to Leaflet that contains configurations for various free tile providers.

Cal-Heatmap is a javascript charting library to create a time-series calendar heatmap