Choose Univariate Class Intervals
Selected commonly used methods for choosing univariate class intervals for mapping or other graphics purposes. From 0.4-3, an implementation of the “headtails” style contributed by Diego Hernangómez - Jiang, B. 2013 “Head/tail breaks: A new classification scheme for data with a heavy-tailed distribution”, The Professional Geographer, 65 (3), 482 – 494. https://arxiv.org/abs/1209.2801v1.
If you want to compile this package from source, make sure you have the latest version of GNU Fortran installed, which you can find on the R Development Tools web page if you use OSX; on Windows make sure your Rtools includes Fortran. Fortran is needed to compile Fisher’s original code which was written in Fortran.
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