This site contains supplements to the above-titled article published in Cartography and Geographic Information Science, Volume 46 (2019) written by Jim Burt, Jeremy White, Greg Allord, Ken Then and A-Xing Zhu. Please direct questions and comments to Jim (firstname.lastname@example.org).
The supplementary files include software, documentation, data files and videos related to the two computer programs discussed in the article (Quad-G+ and NotAQuad):
Quad-G+ software (16.5 MB)
Quad-G+ user manual (1.5 MB)
NotAQuad software (16.4 MB)
NotAQuad user manual (1.5 MB)