Scale vectors to fill the current plot
Calculates a scale factor so that a collection of vectors nearly fills the current plot, that is, the longest vector does not extend beyond the plot region.
vecscale(vectors, bbox = matrix(par("usr"), 2, 2), origin = c(0, 0), factor = 0.95)vectors |
a two-column matrix giving the end points of a collection of vectors |
bbox |
the bounding box of the containing plot region within which the vectors are to be plotted |
origin |
origin of the vectors |
factor |
maximum length of the rescaled vectors relative to the maximum possible |
scale factor, the multiplier of the vectors
Michael Friendly
bbox <- matrix(c(-3, 3, -2, 2), 2, 2)
colnames(bbox) <- c("x","y")
rownames(bbox) <- c("min", "max")
bbox
vecs <- matrix( runif(10, -1, 1), 5, 2)
plot(bbox)
arrows(0, 0, vecs[,1], vecs[,2], angle=10, col="red")
(s <- vecscale(vecs))
arrows(0, 0, s*vecs[,1], s*vecs[,2], angle=10)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.