andrews0: Andrews curves

In andrews: Various Andrews Curves

Andrews curves

Description

Andrews curves for visualization of multidimensional data. For differences between andrews and andrews2 see the 'vignette("andrews"). For colouring the curves see the details.

Usage

andrews0(
  df,
  type = 1,
  clr = NULL,
  step = 100,
  ymax = 10,
  main = NULL,
  sub = NULL
)

Arguments

df	data frame
type	type of curve 1: f(t)=x_1/\sqrt{2}+x_2\sin(t)+x_3\cos(t)+x_4\sin(2t)+x_5\cos(2t)+... 2: f(t)=x_1\sin(t)+x_2\cos(t)+x_3\sin(2t)+x_4\cos(2t)+... 3: f(t)=0.5^{p/2}x_1+0.5^{(p-1)/2} x_2(\sin(t)+\cos(t))+0.5^{(p-2)/2} x_3(\sin(t)-\cos(t))+0.5^{(p-3)/2} x_4(\sin(2t)+\cos(2t))+0.5^{(p-6)/2}x_5(\sin(2t)-\cos(2t))+...) with $p$ the number of variables 4: f(t)=1/\sqrt{2}(x_1+x_2(\sin(t)+\cos(t))+x_3(\sin(t)-\cos(t))+x_4(\sin(2t)+\cos(2t))+x_5(\sin(2t)-\cos(2t))+...)
clr	number/name of column in the date frame for color of curves
step	smoothness of curves
ymax	maximum of y coordinate.
main	main title for the plot
sub	sub title for the plot

Details

Andrews curves transform multidimensional data into curves. This package presents four types of curves

If df[,clr] is numeric then hsv(1,1,v) with the normalized values (on ⁠\[0, 1\]⁠) of df[,clr] is used. Otherwise the number of unique values in nuv <- unique(df[,clr]) is used in connection with rainbow(nuv).

Value

nothing

Author(s)

Jaroslav Myslivec [e-mail]

References

• Andrews, D. F. (1972) Plots of High-Dimensional Data. Biometrics, vol. 28, no. 1, pp. 125-136.

• Khattree, R., Naik, D. N. (2002) Andrews Plots for Multivariate Data: Some New Suggestions and Applications. Journal of Statistical Planning and Inference, vol. 100, no. 2, pp. 411-425.

Examples

data(iris)
andrews0(iris,clr=5,ymax=3)
andrews0(iris,type=4,clr=5,ymax=2)

andrews documentation built on Oct. 23, 2023, 5:08 p.m.