an integer that indicates the number of points to skip/remove from the beginning of the curve. If skip=1L (default) only the initial residual – that is computed before any iteration, is skipped, if present in the track (it associated with iteration 0).

the coordinates of points in the plot. Alternatively, a single plotting structure, function or any R object with a plot method can be provided.

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 ‘high-density’) vertical lines,

• "s" for stair steps,

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

• "n" for no plotting.

All other types 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.