colourplot: colour plot

In geostats: An Introduction to Statistics for Geoscientists

colour plot

Description

Adds a colour bar to a scatter plot and/or filled contour plot. This function, which is based on base R's filled.contour function, is useful for visualising kriging results.

Usage

colourplot(
  x,
  y,
  z,
  X,
  Y,
  Z,
  nlevels = 20,
  colspec = hcl.colors,
  pch = 21,
  cex = 1,
  plot.title,
  plot.axes,
  key.title,
  key.axes,
  asp = NA,
  xaxs = "i",
  yaxs = "i",
  las = 1,
  axes = TRUE,
  frame.plot = axes,
  extra,
  ...
)

Arguments

x	numerical vector of n equally spaced values to be used in the contour plot.
y	numerical vector of m equally spaced values to be used in the contour plot.
z	an n \times m matrix of numerical values to be used in the contour plot.
X	numerical vector of N values to be used in the scatter plot.
Y	numerical vector of N values to be used in the scatter plot.
Z	numerical vector of N values to be used in the scatter plot.
nlevels	number of levels to be used in the contour plot.
colspec	colour specification (e.g., rainbow, grey.colors, heat.colors, topo.colors).
pch	plot character (21 – 25).
cex	plot character magnification.
plot.title	statements that add titles to the main plot.
plot.axes	statements that draw axes on the main plot. This overrides the default axes.
key.title	statements that add titles for the plot key.
key.axes	statements that draw axes on the plot key. This overrides the default axis.
asp	the y/x aspect ratio, see plot.window.
xaxs	the x axis style. The default is to use internal labelling.
yaxs	the y axis style. The default is to use internal labelling.
las	the style of labelling to be used. The default is to use horizontal labelling.
axes	logicals indicating if axes should be drawn.
frame.plot	logicals indicating if a box should be drawn, as in plot.default.
extra	(optional) extra intructions to be carried out in the main plot window, such as text annotations.
...	additional graphical parameters

Value

no return value

Examples

data('meuse',package='geostats')
colourplot(X=meuse$x,Y=meuse$y,Z=log(meuse$zinc),
           plot.title=title(main='Meuse',xlab='Easting',ylab='Northing'),
           key.title=title(main='log(Zn)'))

geostats documentation built on Jan. 7, 2023, 5:32 p.m.