A choropleth map is a thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.

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Choosing intervals for a map of race in the United States

I'm creating an open map layer of race in the United States using Census Data. This layer will be publicly available in the near future as "Justice Map". The goal is to help others create maps using ...
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Choropleth Mapping Using Quantile Method in CartoDB

Does anyone know how CartoDB calculates the buckets for a choropleth map using the quantile method? My understanding of choropleth maps that use the quantile method is that they will assign an equal ...
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leaflet choropleth map using dynamic value

I am doing a choropleth map using leaflet and JSON data. I got a clean tutorial in leaflet site. In that tutorial the used us-states.js JSON file where the choropleth was based on the ...