> Finally I got the unreasonable contour plotted. > > http://www.geocities.com/useebi/data/kdecontour.jpeg > > The codes to get the plot, > > cdplot2d(survived ~ age + sibsp, data = titanic3) > > are in http://www.geocities.com/useebi/data/cdplot2d.txt > > One step that I couldn't accomplish as in cdplot is to eliminate those > undefined conditional densities outside the ranges of the two covariates. > The plot dosen't make sense for areas with no x and y observation. Probably, > this is why the goal did not sound like anything reasonable.
You can do something pretty similar with ggplot: qplot(age, sibsp, . ~ survived, data=titanic3, type=c("jitter","2density")) (except clearly the density calculation is very different) Hadley ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.