A short, friendly guide to basic principles of thematic mapping.
http://axismaps.github.io/thematic-cartography

This brief overview of basic thematic mapping is adapted from documentation for indiemapper written in 2010 by Axis Maps. It has been edited to remove software-specific content, to add a bit more information here and there, and to update some links. We hope that with further contributions it can expand to include more helpful information and references.

• Mark Harrower
• Andy Woodruff
• Ben Sheesley
• David Heyman
• Daniel Huffman