Find out who created the Stream Graph or the Chord diagram, the Sparklines or the Bullet Graph, the Pie chart and the Bar chart. And why exactly we also know the Polar Area chart as Nightingale Rose. This is a list of data scientists and other influencers in data visualization, credited as inventors of a particular type of chart.
If you are wondering about alternatives to Pie charts you may use, here is a detailed reference, with a short checklist for every transition to an equivalent or similar chart type. At the end, we share a cheat sheet infographic you may use for your projects.
We limited this post to a typical single-series Pie chart with a small acceptable number of slices, having all values already sorted in descending order. Other specific Pie chart types, with just two slices, or with multiple side-by-side or nested pies, may be considered separately in another post.
Let’s see how Query Xtractor can help you solve the typical SQL problem of detecting overlapping datetime intervals. We have a table of projects employees are working on for a period of time, between a start and end date. It is indeed very hard to figure out from the results grid how large each period of time is and how they compare to each other.