CARTO, which is an open-source software built on PostGIS and PostgreSQL, is an online mapping platform which allows end-users to produce a variety of Web GIS end products, including thematic maps.
The Geographic Information Technology Training Alliance (GITTA) has an online lesson plan that provides some helpful information about creating thematic maps. The lesson provides an introduction to basic statistical techniques, understanding measurement, and provides an understanding of how and when to standardize and classify GIS data. The lesson is broken up […]
The FlowingData site has a post with instructions from Nathan Yau on how to create “a simple map without all the GIS stuff” of the United States at the county level using free tools. Using data from the Bureau of Labor Statistics on unemployment rates, Yau provides the steps necessary to […]
Zachary Forest Johnson provides an overview on Indiemaps.com on the first published instances of each of the six most commonly used thematic mapping techniques: choropleth, proportional symbol, dot density, flow, isarithmic, and cartogram. Each technique’s first mapping instance is described along with a scanned sample of the map. In conclusion, […]