choropleth

plural choropleths

1. abbreviationattributiveellipsissometimesEllipsis of choropleth map.

   An elevation matrix approximation provides us with very small, regularly placed units which can overcome many of the problems of choropleth representation.

   2008, Nicholas J. Tate, Peter F. Fisher, David J. Martin, “Chapter 13: Geographic Information Systems and Surfaces”, in John P. Wilson, A. Stewart Fotheringham, editors, The Handbook of Geographic Information Science, page 241

   2 more examples

   The choropleths were generated using the SAS/GRAPH software package [23].[…]On each choropleth, the blocks in the key are labeled between zero and one, in interval increments of 0.05 over the range of the sample cdf values.

   1994, Osman Balci, Simulation and Modeling, page 466

   2012, R. B. Thapa, R. C. Estoque, 6: Grographically Weighted Regression in Geospatial Analysis, Yuji Murayama, Progress in Geospatial Analysis, page 90, Previous approaches to mapping the results of GWR have primarily employed an equal-step classification and sequential no-hue color scheme for choropleth mapping of parameter estimates.