Visual Data Insights Using SAS ODS Graphics: A Guide to Communication-Effective Data Visualization

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

L. BesslerVisual Data Insights Using SAS ODS Graphicshttps://doi.org/10.1007/978-1-4842-8609-8_15

15. Delivering Precise Numbers When Using PROC SGMAP

LeRoy Bessler¹  

(1)

Mequon, WI, USA

 

The first choropleth map was created in 1826 by Baron Charles Dupin. It was a gray-shaded map concerning primary school education across France. Choropleth maps are also called thematic maps .

My first encounter with choropleth maps was to assist a SAS/GRAPH project by Steven J. Subichin in the Market Research Department at Miller Brewing Company in the 1980s. To create output at faster rates, they were printed with gray shades on a laser printer, rather than being output ...