> I would like to plot a curve (in color red) on a surface in a 3D plot.
Perhaps trans3d would be relevant? ?persp 's examples include an example of adding a line to a 3d plot using trans3d S ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}} ______________________________________________ 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.