render_contour: Render 3d observations as contours.

In rstudio/gggeom: Graphical Geometry

Description

Render 3d observations as contours.

Usage

render_contour(data, x, y, z, nbreaks = 10, breaks = NULL)

Arguments

data	A data frame.
x,y,z	3d location of each point
nbreaks,breaks	Either the number of breaks between the smallest and largest z values, or the positions of the breaks.

Value

A path geometry.

Examples

n <- 50
waves <- expand.grid(
   x = seq(-pi, pi, length = n),
   y = seq(-pi, pi, length = n)
)
r <- sqrt(waves$x ^ 2 + waves$y ^ 2)
waves$ripple <- cos(r ^ 2) * exp(-r / 6)
waves$hill <- exp(1 - r)

waves %>% render_contour(~x, ~y, ~hill) %>% plot()
waves %>% render_contour(~x, ~y, ~ripple) %>% plot()

# Show only where function crosses 0
waves %>% render_contour(~x, ~y, ~ripple, breaks = 0) %>% plot()

rstudio/gggeom documentation built on May 28, 2019, 4:35 a.m.