ggformula (version 0.6)

gf_function: Layers displaying graphs of functions

Description

These functions provide two different interfaces for creating a layer that contains the graph of a function.

Usage

gf_function(object = NULL, fun, xlim, ..., inherit = FALSE)
gf_fun(object = NULL, formula, xlim, ..., inherit = FALSE)

Arguments

object

When chaining, this holds an object produced in the earlier portions of the chain. Most users can safely ignore this argument. See details and examples.

fun

A function.

xlim

A numeric vector providing the extent of the x-axis when creating the first layer in a plot. Ignored when creating a subsequent layer.

...

Other arguments such as position="dodge".

inherit

A logical indicating whether attributes should be inherited.

formula

A formula describing a function. See examples and mosaicCore::makeFun().

Examples

# NOT RUN {
gf_function(fun = sqrt, xlim = c(0, 10))
if (require(mosaicData)) {
  gf_histogram(..density.. ~ age, data = HELPrct, binwidth = 3, alpha = 0.6) %>%
    gf_function(fun = dnorm,
      args = list(mean = mean(HELPrct$age), sd = sd(HELPrct$age)),
      color = "red")
}
gf_fun(5 + 3 * cos(10 * x) ~ x, xlim = c(0,2))
# Utility bill is quadratic in month?
f <- makeFun(lm(totalbill ~ poly(month, 2), data = Utilities))
gf_point(totalbill ~ month, data = Utilities, alpha = 0.6) %>%
  gf_fun(f(m) ~ m, color = "red")
# }