When Is Easter Sunday?
Chris Pudney cpudney
- Perth, Western Australia
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Easter Sunday Visualization
Easter Sunday is the Sunday following the first full moon after March 21. A few years ago I published this histogram of Easter Sunday dates. A friend then asked whether it was possible to visualize Easter Sunday dates from one year to the next. I've finally gotten around to producing such a visualization.
The time-series chart shows 1000 years of Easter Sunday dates. Use the mini-chart to focus the top chart on a specific range of years.
This chart allows us to see repeating patterns in the sequence of Easter Sunday dates. The patterns don't always repeat exactly but the human visual system is good at spotting similar patterns. For example, I was quickly able to match the sequence of Easter Sunday dates starting in 1943 and 2038 (April 25, 21, 17, 13, ...). The sequences are identical for almost 30 years. If you spot any others please let us know.
Triple-J Hottest 100 Artists
This chart visualizes tracks by artists who have appeared most often in the Hottest 100. Each circle represents a track. Mouse-over a circle to see more information about the track. Mouse-over year/artist labels to highlight tracks for the year/artist. More...
Simpsons Co-Appearances Graph
This project holds co-appearances graphs of Simpsons characters. Each node of the graph represents a Simpsons character. An (undirected) edge connects each pair of nodes whose characters appear in the same episode. To each edge I add a weight; the number of episodes in which the pair of characters co-appear. I also label each node with the number of episodes in which its character appears.
See this blog post for more information.
Data source: Wikisimpsons
Australian Federal Budget 2014/15: Changes to Public Service Staffing Levels
A treemap is used to display the hierarchy of Federal Government ministries and departments. The size and colour of the rectangles encode the number of staff (2013/14 or 2014/15) and the change in staffing levels (absolute or percentage), respectively.
Source data comes from Budget Paper 4 Table 2.2 Average Staffing Table.
The treemap was implemented using D3.js, and borrowed heavily from a couple of excellent examples: