I'd like to use rgl.surface (or some other function if more appropriate) to create a horizontal and vertical transparent grey slice (plane) running through both the x and y origins and extending across the z axis, i.e. the 3-d equivalent of the normal 2-d coordinate axes we are all familiar with. The examples for rgl.surface are a bit more complex than what I need and I am having trouble understanding them.
Here is the code if I come up with, but which obviously doesn't work. require(rgl) set.seed(123) d3.mat <- matrix(runif(30, min = -5, max = 5), ncol = 3, nrow = 10) open3d() plot3d(x = d3.mat, type = "s", col = "blue", size = 0.33, xlab ="x", ylab = "y", zlab = "z") x <- 0 y <- 0 z <- matrix(c(floor(min(d3.mat[,1])),ceiling(max(d3.mat[,1])),floor(min(d3.mat[,3])),ceiling(max(d3.mat[,3]))),nrow = 2, ncol =2) rgl.surface(x, z, y, color="grey", back="lines") What am I doing wrong? And, while I'm at it, there is another minor question I have, which is "how can I exaggerate the size difference in the spheres between front and back?" Thanks, Mark -- Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry Indiana University School of Medicine 15032 Hunter Court, Westfield, IN 46074 (317) 490-5129 Work, & Mobile & VoiceMail (317) 663-0513 Home (no voice mail please) ______________________________________________ R-help@r-project.org 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.
