| lines {base} | R Documentation |
Add Connected Line Segments to a Plot
Description
A generic function taking coordinates given in various ways and joining the corresponding points with line segments.
Usage
lines(x, ...)
lines.default(x, y=NULL, type="l", col=par("col"), lty=par("lty"), ...)
Arguments
x, y |
coordinate vectors of points to join. |
type |
character indicating the type of plotting; actually any of
the |
col |
color to use. |
lty |
line type to use. |
... |
Further graphical parameters (see |
Details
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 it 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.
See Also
points,
plot,
and the underlying “primitive” plot.xy.
Examples
data(cars)
# draw a smooth line through a scatter plot
plot(cars, main="Stopping Distance versus Speed")
lines(lowess(cars))