| lines {graphics} | R Documentation |
A generic function taking coordinates given in various ways and joining the corresponding points with line segments.
lines(x, ...) ## Default S3 method: lines(x, y = NULL, type = "l", ...)
x, y |
coordinate vectors of points to join. |
type |
character indicating the type of plotting; actually any of
the types as in plot.default. |
... |
Further graphical parameters (see par) may
also be supplied as arguments, particularly, line type, lty,
line width, lwd, color, col and for type = "b",
pch. Also the line characteristics lend, ljoin
and lmitre. |
The coordinates can be passed to lines in a plotting structure
(a list with x and y components), a time series,
etc. See xy.coords.
The coordinates can contain NA values. If a point contains
NA in either its x or 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.
For type = "h", col can be a vector and will be recycled
as needed.
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.
points, particularly for type %in% c("p","b","o"),
plot,
and the workhorse function plot.xy.
abline for drawing (single) straight lines.
par for how to specify colors.
# draw a smooth line through a scatter plot plot(cars, main="Stopping Distance versus Speed") lines(lowess(cars))