Below the visualization, I have step-by-step instructions detailing the process that led to the end product. Since this took a bit to figure out, I thought it might be helpful to talk about how I got from the original data source to the end product.
The Marey plot makes up the top half of the page, with some supporting charts for train times and locations below it. Use the drop-downs at the top of the page to select a start and end station. This visualization focuses on the PATH train that is primarily used to take commuters between New Jersey and New York City. Similar graphs have been created using other technologies in the past (most notably in D3 by Mike Bostock) but I was unable to find anything similar in Tableau. This visualization may look familiar to you if you're an Edward Tufte fan, as it is on the cover of his book The Visual Display of Quantitative Information. The original Marey Train Schedule visualization catalogs trips from Paris to Lyon in 1885. The idea for this visualization has been bouncing around my head for a while now, but I have had a tough time figuring out how to execute it.
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