Add Connected Line Segments to a Plot
A generic function taking coordinates given in various ways and joining the corresponding points with line segments.
lines(x, ...)"lines"(x, y = NULL, type = "l", ...)
- x, y
- coordinate vectors of points to join.
- character indicating the type of plotting; actually any of
types as in
- Further graphical parameters (see
par) may also be supplied as arguments, particularly, line type,
lty, line width,
type = "b",
pch. Also the line characteristics
The coordinates can be passed in a plotting structure
(a list with
y components), a two-column matrix, a
time series, .... See
xy.coords. If supplied
separately, they must be of the same length.
The coordinates can contain
NA values. If a point contains
NA in either its
y value, it is omitted from
the plot, and lines are not drawn to or from such points. Thus
missing values can be used to achieve breaks in lines.
type = "h",
col can be a vector and will be recycled
lwd can be a vector: its first element will apply to lines but
the whole vector to symbols (recycled as necessary).
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
abline for drawing (single) straight lines.
par for line type (
lty) specification and how to
# draw a smooth line through a scatter plot plot(cars, main = "Stopping Distance versus Speed") lines(stats::lowess(cars))