Axis labeling
Functions for positioning tick labels on axes
| Package: | labeling |
| Type: | Package |
| Version: | 0.2 |
| Date: | 2011-04-01 |
| License: | Unlimited |
| LazyLoad: | yes |
Implements a number of axis labeling schemes, including those compared in An Extension of Wilkinson's Algorithm for Positioning Tick Labels on Axes by Talbot, Lin, and Hanrahan, InfoVis 2010.
Justin Talbot justintalbot@gmail.com
Heckbert, P. S. (1990) Nice numbers for graph labels, Graphics Gems I, Academic Press Professional, Inc. Wilkinson, L. (2005) The Grammar of Graphics, Springer-Verlag New York, Inc. Talbot, J., Lin, S., Hanrahan, P. (2010) An Extension of Wilkinson's Algorithm for Positioning Tick Labels on Axes, InfoVis 2010.
heckbert(8.1, 14.1, 4) # 5 10 15
wilkinson(8.1, 14.1, 4) # 8 9 10 11 12 13 14 15
extended(8.1, 14.1, 4) # 8 10 12 14
# When plotting, extend the plot range to include the labeling
# Should probably have a helper function to make this easier
data(iris)
x <- iris$Sepal.Width
y <- iris$Sepal.Length
xl <- extended(min(x), max(x), 6)
yl <- extended(min(y), max(y), 6)
plot(x, y,
xlim=c(min(x,xl),max(x,xl)),
ylim=c(min(y,yl),max(y,yl)),
axes=FALSE, main="Extended labeling")
axis(1, at=xl)
axis(2, at=yl)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.