If I have a data set in R, what would be a good way to export it so I could get it to a service like Shapeways for 3D printing?
I don't have any "real" CAD software, but I've used Google Sketchup before.
In my case the object can be described by two surface plots, something like this:
x <- y <- seq(0,1,by=0.01)
persp(x, y, outer(x, y, function(x,y) (x+y)^2))
persp(x, y, outer(x, y, function(x,y) rep(0,length(x))), zlim=c(-1,1))
...which I would like to appear together as one object to be printed. Any ideas?