A generic function taking coordinates given in various ways and
joining the corresponding points with line segments.
# S3 method for default
lines(x, y = NULL, type = "l", …)
coordinate vectors of points to join.
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
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
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.