Generic XY Plotting
Description
Generic function for plotting of R objects. For more details about
the graphical parameter arguments, see par .
For simple scatter plots, plot.default will be used.
However, there are plot methods for many R objects,
including function s, data.frame s,
density objects, etc. Use methods(plot) and
the documentation for these.
Usage
plot(x, y, ...)
Arguments
x 
the coordinates of points in the plot. Alternatively, a
single plotting structure, function or any R object with a
plot method can be provided.

y 
the y coordinates of points in the plot, optional
if x is an appropriate structure.

... 
Arguments to be passed to methods, such as
graphical parameters (see par ).
Many methods will accept the following arguments:
type what type of plot should be drawn. Possible types are

"p" for points,

"l" for lines,

"b" for both,

"c" for the lines part alone of "b" ,

"o" for both ‘overplotted’,

"h" for ‘histogram’ like (or
‘highdensity’) vertical lines,

"s" for stair steps,

"S" for other steps, see ‘Details’ below,

"n" for no plotting.
All other type s give a warning or an error; using, e.g.,
type = "punkte" being equivalent to type = "p" for S
compatibility. Note that some methods,
e.g. plot.factor , do not accept this.
main an overall title for the plot: see title .
sub a sub title for the plot: see title .
xlab a title for the x axis: see title .
ylab a title for the y axis: see title .
asp the y/x aspect ratio,
see plot.window .

Details
The two step types differ in their xy preference: Going from
(x1,y1) to (x2,y2) with x1 < x2, type = "s"
moves first horizontal, then vertical, whereas type = "S" moves
the other way around.
Examples
require(stats) # for lowess, rpois, rnorm
plot(cars)
lines(lowess(cars))
plot(sin, pi, 2*pi) # see ?plot.function
## Discrete Distribution Plot:
plot(table(rpois(100, 5)), type = "h", col = "red", lwd = 10,
main = "rpois(100, lambda = 5)")
## Simple quantiles/ECDF, see ecdf() {library(stats)} for a better one:
plot(x < sort(rnorm(47)), type = "s", main = "plot(x, type = \"s\")")
points(x, cex = .5, col = "dark red")
