Chris Pudney cpudney

When Is Easter Sunday?

Country	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013
Afghanistan		0.0047225682	0.0045613952	0.0878912529	0.10580903	1.2241480837	2.1071236455	1.9	1.84	3.55	4	5	5.4545454545	5.9
Albania	0.1140973466	0.3257983771	0.3900812734	0.9719004152	2.4203877978	6.043890864	9.6099913158	15.0361154084	23.86	41.2	45	49	54.6559590399	60.1
Algeria	0.4917056791	0.6461140167	1.5916412604	2.1953597309	4.6344750878	5.843942092	7.3759849563	9.4511906256	10.18	11.23	12.5	14	15.2280267564	16.5
American Samoa
Andorra	10.5388356092		11.260468717	13.5464128764	26.8379543895	37.6057662175	48.9368469989	70.87	70.04	78.53	81	81	86.4344246167	94
Angola	0.1050455625	0.1360138674	0.2703767456	0.3706820652	0.464814618	1.1433668266	1.9076475072	3.2	4.6	6	10	14.776	16.9372101137	19.1
Anguilla	22.4054490052	25.8843830889	24.8036378669	24.5233763152	25.0436366396	29	36	41	44	48	49.6	53.64	59.2149831732	64.8
Antigua & Barbuda	6.482225737	8.8992855145	12.5	17.2286487817	24.2665437162	27	30	34	38	42	47	53	59	63

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...

Data Source

Wikipedia

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

This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

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:

	All AFL (VFL) games 1897 - 2012

	Src: Wikipedia AFL

	TODO:
	Handle draws

	Axis labels: years & teams

	Highlight finals