How to change points and add a regression to a cloudplot (using R)?

Question

To make clear what I\'m asking I\'ve created an easy example. Step one is to create some data:

gender <- factor(rep(c(1, 2), c(43, 41)), levels = c(1, 2),         


        

Answer 1

There is nice fit visualization in car package using rgl package (openGL implementation):

require(car)
require(rgl)
scatter3d(death~numberofdrugs+geneticvalue, groups=y$gender, data=y, parallel=FALSE)