Hi: Here's an example stolen out of the scatterplot3d package vignette (p. 9):
library(scatterplot3d) z <- seq(-10, 10, 0.01) x <- cos(z) y <- sin(z) scatterplot3d(x, y, z, highlight.3d = TRUE, col.axis = 'blue', col.grid = 'lightblue', main = 'Helix', pch = 20) HTH, Dennis On Sat, Nov 20, 2010 at 8:29 AM, Carl Witthoft <c...@witthoft.com> wrote: > Hi, > I need some help either in how to configure variables for wireframe(), or > some suggestions as to other graphics commands to use for plotting a 2-D > manifold in 3-D space. > > Here is an example I tried (in the hopes that it would plot a helical line) > : > > xsp<-matrix(c(cos(seq(0,80)/5)),9,9) > ysp<-matrix(c(sin(seq(0,80)/5)),9,9) > zsp<-matrix(c((seq(0,80)/20)),9,9) > wireframe(zsp~xsp*ysp) > > The resulting plot looks vaguely like a helix, but not right. And if I > change my variables' dimensions to c(3,27) it looks "better," but if the > dims are c(1,81), nothing gets plotted. > > So: is there a way to control which points are connected by lines in > wireframe()? Or is there a more appropriate way to provide a plotting > program with sets of coordinates in 3-space? > > My primary goal is to be able to plot surfaces, not just a line as in my > sample code. For example, I might expand the data above to represent points > on a 'ribbon' helix. > > Thanks for yr. help -- feel free to point me to help files for existing > packages or plotting routines. > > Carl > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.