Can you re-imagine this influential map? Introduction In 1854, Dr. John Snow mapped cholera deaths in London to investigate how the disease was spreading. At the time, most believed cholera came from “bad air.” Snow used mapping to reveal a strong cluster of deaths around a single water pump on Broad Street, proving that contaminated …
2025 Week 18 | Sigma: Can You Re-imagine This Map? Read More
Can you make a small multiples chart? Introduction Edward Tufte, often called the godfather of data visualization, brought a minimalist, no-nonsense approach to presenting information. In his seminal 1983 book The Visual Display of Quantitative Information, he introduced a now-iconic concept: small multiples — a simple but powerful way to show data through repetition and …
2025 Week 14 | Sigma: Can you Create a Small Multiples chart? Read More
Can you make a bump chart? Introduction Bump charts are a great way explore changes in rank over time. They’re also a snazzy way to gamify your data and create some friendly competition. A bump chart is more interactive with a continuous time field – the chart changes when a new date part occurs. We’ll …
2025 Week 8 | Sigma : Can you Create a Bump chart? Read More
