title {base} | R Documentation |
This function can be used to add labels to a plot. Its first four
principal arguments can also be used as arguments in most high-level
plotting functions. They must be of type character
or
expression
. In the latter case, quite a bit of
mathematical notation is available such as sub- and superscripts,
greek letters, fractions, etc.
title(main = "", sub = "", xlab = "", ylab = "", ...)
main |
The main title (on top) using font and size (character
expansion) par("font.main") and color
par("col.main") . |
sub |
Sub-title (at bottom) using font and size
par("font.sub") and color par("col.sub") . |
xlab |
X axis label using font and character expansion
par("font.axis") and color par("col.axis") . |
ylab |
Y axis label, same font attributes as xlab . |
... |
further graphical parameters (from par ). |
mtext
, text
;
plotmath
for details on mathematical annotation.
plot(cars, main = "") title(main = "Stopping Distance versus Speed") x <- seq(-4, 4, len = 101) y <- cbind(sin(x), cos(x)) matplot(x, y, type = "l", xaxt = "n", main = expression(paste(plain(sin) * phi, " and ", plain(cos) * phi)), ylab = expression("sin" * phi, "cos" * phi), # only 1st is taken xlab = expression(paste("Phase Angle ", phi)), col.main = "blue") axis(1, at = c(-pi, -pi/2, 0, pi/2, pi), lab = expression(-pi, -pi/2, 0, pi/2, pi)) abline(h = 0, v = pi/2 * c(-1,1), lty = 2, lwd = .1, col = "gray70")