EdX Viewership 2013: Aggregating in App! back to normal, 10:23
A Mercator map of the world shows the geographic distribution of video views in the HarvardX/MITx online courses for 2013. Circles sized with `d3.scaleSqrt` mark the number of video plays at each recorded latitude and longitude, with hover tooltips revealing the specific country and view count. The visualization uses `d3.geoPath` to render land and graticules from World Atlas TopoJSON, while React manages the component state. The dataset is loaded from a CSV file via `d3.csv`, with each point’s radius proportional to its view total.
AI-generated descriptionThis is a visualization of the Harvardx/MITx Course-Person Dataset for the academic year 2013. The data shows the number of video views of the online courses, represented by the circles on the map. The data can be found [here] (https://gist.githubusercontent.com/sophburke/e2a5a57fd931cb6174b2ba4494b24996/raw/16d11e7f2ba5920161880e346f988dfea337eee0/hxmitx_pers-courseAY2013_viewer_location-test,csv).
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The world map behind the points is a Mercator type map using the World Atlas TopoJSON. The points are off by a small fraction (down and to the left) however it fits much better on the Mercator projection over the Natural Earth projection. When the user hovers over each point, they can see the latitude and logitude of that deployment.