contour_plot: Contour plots of functions of two variables

In mosaicCalc: R-Language Based Calculus Operations for Teaching

Contour plots of functions of two variables

Description

Creates a ggplot2-compatible contour plot of a function of two variables.

Usage

contour_plot(
  ...,
  npts = 100,
  labels = TRUE,
  filled = TRUE,
  contours_at = NULL,
  n_contours = 10,
  n_fill = 50,
  alpha = 1,
  fill_alpha = 0.1,
  label_alpha = 1,
  label_placement = 0.5,
  contour_color = "blue",
  label_color = contour_color,
  skip = 1,
  guide = FALSE,
  guide_title = "output",
  color_scale = scale_color_viridis_c(),
  fill_scale = scale_fill_viridis_d()
)

Arguments

...	Canonical first "three" arguments: ⁠[Previous layer]⁠, tilde expression, domain
npts	Integer number of points on each axis at which to evaluate the function
labels	Logical flag: label the contours
filled	Logical flag: fill between the contours
contours_at	Vector of numbers. Contours will be drawn at these levels of the output.
n_contours	hint at number of contours to show
n_fill	Integer number of points for calculating fill
alpha	Transparency of contours in ⁠[0-1]⁠
fill_alpha	Transparency of fill
label_alpha	Likewise, for contour labels
label_placement	A number, between 0 and 1, suggesting where to place the contour labels. Default: 0.5. This can be useful when there are two contour layers in one plaot.
contour_color	Set to a string, e.g. "blue" for contours to be drawn in a fixed color
label_color	Defaults to contour_color. Can be set to a
skip	Small integer. Skip this many contours between labeled contours
guide	Logical flag, whether to show a color guide.
guide_title	Character string for title of guide (if any)
color_scale	See ggplot2 color scales.
fill_scale	See ggplot2 fill scales

Value

ggplot2 graphics layers

Examples

## Not run: 
contour_plot(sin(0.2*x*y) ~ x & y, domain(x=-10.3:4.5, y=2:7.5))
contour_plot(x + y ~ x & y)
contour_plot(sin(0.2*x*y)) # but better to use tilde expression

## End(Not run)

mosaicCalc documentation built on Sept. 11, 2024, 9:10 p.m.