gcurve: Draw function curves
In raredd/plotr: More plotting functions and examples

gcurve

R Documentation

Draw function curves

Description

Draws a curve corresponding to a function over the interval [from, to]. gcurve can plot also an expression in the variable xname, default x.

Usage

gcurve(
  expr,
  from = NULL,
  to = NULL,
  n = 101,
  add = FALSE,
  type = "l",
  xname = "x",
  xlab = xname,
  ylab = NULL,
  log = NULL,
  xlim = NULL,
  ...,
  grid = TRUE,
  col.grid = "grey90",
  col.acc = "white"
)

## S3 method for class ''function''
gplot(
  x,
  y = 0,
  to = 1,
  from = y,
  xlim = NULL,
  ylab = NULL,
  grid = TRUE,
  col.grid = "grey90",
  col.acc = "white",
  ...
)

Arguments

`expr`	The name of a function, or a call or an expression written as a function of `x` which will evaluate to an object of the same length as `x`.
`from, to`	the range over which the function will be plotted.
`n`	integer; the number of x values at which to evaluate.
`add`	logical; if `TRUE` add to an already existing plot; if `NA` start a new plot taking the defaults for the limits and log-scaling of the x-axis from the previous plot. Taken as `FALSE` (with a warning if a different value is supplied) if no graphics device is open.
`type`	plot type: see `plot.default`.
`xname`	character string giving the name to be used for the x axis.
`xlim`	`NULL` or a numeric vector of length 2; if non-`NULL` it provides the defaults for `c(from, to)` and, unless `add = TRUE`, selects the x-limits of the plot – see `plot.window`.
`grid`	logical; if `TRUE`, a background grid will be drawn
`col.grid`	`grid` color
`col.acc`	`grid` accent color
`x`	a ‘vectorizing’ numeric R function.
`y`	alias for `from` for compatibility with `plot`