Thayer and Storer's labeling algorithm
thayer(dmin, dmax, m)
vector of axis label locations
minimum of the data range
maximum of the data range
number of axis labels
Justin Talbot justintalbot@gmail.com
Thayer, R. P. and Storer, R. F. (1969) AS 21. Scale Selection for Computer Plots, Journal of the Royal Statistical Society. Series C., pp. 206-208.