Choropleth map of unemployment 2006 to 2015

Key features of this map include:

• slider bar for changing year
• pop-up box when hovering over counties (box displays county name and unemployment rate), and legend year that updates based on the year chosen by the slider bar.
• Load two external files, a GeoJSON and a CSV, at runtime.
• Process these data, binding attribute data to geometries.
• Draw a classed choropleth map of unemployment rates for US counties using an appropriate classification method, e.g., ckmeans or quantile, or quartile and a sequential color scheme.
• Draw an accompanying legend with an appropriate legend title and class break labels.
• Display the map at 100% width and height of the browser window's viewport.
• Allow the user to zoom and pan.
• Provide a meaningful title for the map, placed upon the map.
• In addition to these requirements, your map should also provide the following UI enhancements for the user:
• A visual affordance when the user hovers over specific counties (e.g., making the stroke of the county yellow).
• A tooltip triggered when the user clicks on a specific county, which provides the name of the county and the specific unemployment rate for the currently displayed year.