fwdmvPrePlot {Rfwdmv} | R Documentation |
This function produces a pairs plot with sumperimposed contours.
fwdmvPrePlot(X, panel = panel.be, plot.diagonal = TRUE)
X |
a matrix or data frame. |
panel |
a function for computing the contours. The Rfwdmv package includes panel.be for bivariate ellipses, panel.me for median centered bivariate ellipses, and panel.bb for bivariate box plots. |
plot.diagonal |
a logical value. If TRUE then univariate boxplots are drawn along the diagonal. |
an empty list is invisibly returned.
The bivariate boxplots calculated from B-splines provide a useful tool for a preliminary examination of the data. The non elliptical shape of the countours is an indication or non normality.
Kjell Konis
Atkinson, A. C., Riani, M. and Cerioli, A. (2004) Exploring Multivariate Data with the Forward Search. Springer-Verlag New York.
data(heads.dat) fwdmvPrePlot(heads.dat, panel = panel.be) fwdmvPrePlot(heads.dat, panel = panel.me) fwdmvPrePlot(heads.dat, panel = panel.bb)