A Geographic Map (also known as a choropleth map) is a heatmap that uses geographical boundaries like regions, states, and countries with shading according to data values. It is used to highlight geographical differences and similarities in data.
Technical details
Description
See Visualization - Geographic Map - Geographic Map for details on creating geographic maps. This page is dedicated to the "small multiples" version and will highlight differences below.
Data/Inputs
The geographic map requires a table with more than two columns:
Column 1: a list of geographic entities. The entities may be countries, continents, states, regions, or zipcodes.
Column 2-k: Contains data value for each geographic entity, where each column will have its own panel in the final visualization.
Chart tab
See Visualization - Geographic Map - Geographic Map for details.
Output
The example below visualizes the homicide rate for US states over time. The geographic maps are created using the following table. The small multiples feature takes data from every column and creates a separate panel for each year.
Acknowledgements
See Visualization - Geographic Map - Geographic Map for details.
Method
- In Displayr: How to Create a Small Multiples Geographic Map
- In Q: Chart > Visualization > Geographic Map > Small Multiples Geographic Map