Choropleth story maps in 1826: Encoding 뿯½ Encoding

Shade regions by a rate - elections, health, sales - with open geo stacks and honest color scales. Choropleth story maps encodes values as color of administrative regions mapped to a quantitative rate. Baron Charles Dupin (1826); modern TopoJSON + D3 geo pipelines. In reports, ads and assignments it fits regional comparisons, civics assignments, territory KPIs. Skip it when raw counts without normalizing by population or area.

This page gathers anatomy, fit, craft, failure modes and work / ads / school recipes for Choropleth story maps. When should I pick Choropleth story maps? When the story is: regional comparisons, civics assignments, territory KPIs. When should I avoid Choropleth story maps? Skip it in cases like: raw counts without normalizing by population or area.

Baron Charles Dupin (1826); modern TopoJSON + D3 geo pipelines color of administrative regions mapped to a quantitative rate Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure. Yes for lab reports and poster boards if axes, units and a source line are present.