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 |
... |
Further graphical parameters (see |
The coordinates can be passed in a plotting structure
(a list with x
and 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 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.
lines.formula
for the formula method;
points
, particularly for type %in% c("p","b","o")
,
plot
,
and the workhorse function plot.xy
.
abline
for drawing (single) straight lines.
par
for line type (lty
) specification and how to
specify colors.
# draw a smooth line through a scatter plot
plot(cars, main = "Stopping Distance versus Speed")
lines(stats::lowess(cars))