GNGTools (version 1.0.0)

gcurve: gcurve

Description

Returns a data.frame associated with a call to base::curve.

Usage

gcurve(
  expr,
  from = NULL,
  to = NULL,
  n = 101,
  add = FALSE,
  type = "l",
  xname = "x",
  xlab = xname,
  ylab = NULL,
  log = NULL,
  xlim = NULL,
  category = NULL,
  ...
)

Value

A data.frame is returned with x and y-values and an optional column called category

Arguments

expr

expression to be plotted

from

lower bound of x-values

to

upper bound of x-values

n

number of points to plot

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

xlab

labels and graphical parameters can also be specified as arguments.

ylab

For the "function" method of plot, ... can include any of the other arguments of curve, except expr

log

For the "function" method of plot, ... can include any of the other arguments of curve, except expr

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.

category

optional text column appends to data.frame returned

...

additional items passed to curve

Examples

my.gcurve <- gcurve(expr = dnorm(x, mean=0, sd=1),from=-4, to = 4, n= 1001,
category= "Standard Normal")
head(my.gcurve)