Greetings,
I would like to plot a curve (in color red) on a surface in a 3D plot. Say x <- as.vector(seq(-1,1,0.2)) dim(x) <- c(length(x),1) y <- as.vector(seq(-1,1,0.2)) dim(y) <- c(1,length(y)) z <- x%*%y # (x_iy_j) # 3D plot of z(x,y)=xy: persp(x,y,z) Now I would like to plot the curve z=z(x,x) in red on this surface. How do I do that? Many thanks, Michael Meyer ______________________________________________ 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.
