Due: 2014-05-05 1:45p (i.e., you have 24 hours if you didn’t finish in class)
We are going to do a simple visualization to learn something about the location of major supermarket chains in the UK (why you ask? well, why not?). I have gathered together a list of the supermarket locations from the six major chains in the UK (about 2900 stores). I would like a visualization that answers two questions: Which areas of the UK are underserved by the big chains? Are the any of the chains regional (does one dominate a particular area, or is one restricted to a particular area)?
We are going to answer this with a basic dot density plot. To help us, we will add some filtering tools that allow us to turn the various chains on and off.
I have assembled a TopoJSON map of the UK. Note that is also includes Ireland because otherwise Northern Ireland looks funny (to make it clear that this is not part of the visualization, I have given you some styling that should color Ireland grey). To get you started, here is a stub with directions about what you need to include. The order I would suggest would be 1) get the map working, 2) add the dots, 3) add the legend, and then 4) answer the questions.
Answer the questions in the “answers” div.
The visualization should be contained in a single HTML file called username1+username2_hw9.html. Turn the file in on Moodle in the usual way.