plotFunction: Surface plot of a function

In SPOT: Sequential Parameter Optimization Toolbox

Surface plot of a function

Description

A (filled) contour plot or perspective / surface plot of a function.

Usage

plotFunction(
  f = function(x) {
     rowSums(x^2)
 },
  lower = c(0, 0),
  upper = c(1, 1),
  type = "filled.contour",
  s = 100,
  xlab = "x1",
  ylab = "x2",
  zlab = "y",
  color.palette = terrain.colors,
  title = " ",
  levels = NULL,
  points1,
  points2,
  pch1 = 20,
  pch2 = 8,
  lwd1 = 1,
  lwd2 = 1,
  cex1 = 1,
  cex2 = 1,
  col1 = "red",
  col2 = "black",
  theta = -40,
  phi = 40,
  ...
)

Arguments

f	function to be plotted. The function should either be able to take two vectors or one matrix specifying sample locations. i.e. z=f(X) or z=f(x2,x1) where Z is a two column matrix containing the sample locations x1 and x2.
lower	boundary for x1 and x2 (defaults to c(0,0)).
upper	boundary (defaults to c(1,1)).
type	string describing the type of the plot: "filled.contour" (default), "contour", "persp" (perspective), or "persp3d" plot. Note that "persp3d" is based on the plotly package and will work in RStudio, but not in the standard RGui.
s	number of samples along each dimension. e.g. f will be evaluated s^2 times.
xlab	lable of first axis
ylab	lable of second axis
zlab	lable of third axis
color.palette	colors used, default is terrain.color
title	of the plot
levels	number of levels for the plotted function value. Will be set automatically with default NULL.. (contour plots only)
points1	can be omitted, but if given the points in this matrix are added to the plot in form of dots. Contour plots and persp3d only. Contour plots expect matrix with two columns for coordinates. 3Dperspective expects matrix with three columns, third column giving the corresponding observed value of the plotted function.
points2	can be omitted, but if given the points in this matrix are added to the plot in form of crosses. Contour plots and persp3d only. Contour plots expect matrix with two columns for coordinates. 3Dperspective expects matrix with three columns, third column giving the corresponding observed value of the plotted function.
pch1	pch (symbol) setting for points1 (default: 20). (contour plots only)
pch2	pch (symbol) setting for points2 (default: 8). (contour plots only)
lwd1	line width for points1 (default: 1). (contour plots only)
lwd2	line width for points2 (default: 1). (contour plots only)
cex1	cex for points1 (default: 1). (contour plots only)
cex2	cex for points2 (default: 1). (contour plots only)
col1	color for points1 (default: "black"). (contour plots only)
col2	color for points2 (default: "black"). (contour plots only)
theta	angle defining the viewing direction. theta gives the azimuthal direction and phi the colatitude. (persp plot only)
phi	angle defining the viewing direction. theta gives the colatitude. (persp plot only)
...	additional parameters passed to contour or filled.contour

See Also

plotData, plotModel

Examples

plotFunction(function(x){rowSums(x^2)},c(-5,0),c(10,15))
plotFunction(function(x){rowSums(x^2)},c(-5,0),c(10,15),type="contour")
plotFunction(function(x){rowSums(x^2)},c(-5,0),c(10,15),type="persp")

SPOT documentation built on June 26, 2022, 1:06 a.m.