mountscene: Draw mountains, hills and beaches

In TaoTeProgramming: Illustrations from Tao Te Programming

Description

Draws a variety of scenes depending on some subtle changes.

Usage

mountscene(levels = 5, vlen = 200, tilt = 0.2, df = 7, 
   color = NULL, box = TRUE, seed = NULL)
hillscene(num = 100, vlen = 200, tilt = 0.2, df = 7, 
   color = NULL, seed = NULL)
mountain(values, color, df = 7)

Arguments

levels	number of levels of objects in the scene.
vlen	the number of random points along a level.
tilt	the slope of the level. This is in fractions of the vertical dimension – the left side is at tilt below the average level and the right side is tilt above.
df	degrees of freedom of the smoothing of the random points.
color	colors to fill in below each level.
box	logical value: if TRUE, a frame is drawn around the picture.
seed	an integer giving the argument for set.seed.
num	the number of hills.
values	numeric vector that is smoothed.

Value

nothing useful.

Side effects

create a plot on the current graphics device, and modify the random seed.

References

http://www.burns-stat.com/documents/books/tao-te-programming/

See Also

canvas, set.seed.

Examples

# hills
hillscene(color=grep("green|yellow", colors(), value=TRUE))

# waves
hillscene(tilt=0,
   color=grep("aqua", colors(), value=TRUE))

TaoTeProgramming documentation built on May 1, 2019, 6:47 p.m.