Dear R-experts, Using persp3d and surface3d, I have two surfaces. I would like to plot the projection of interesection of these two planes on X-Y plane --> such that I could see a vertical 3D plane. Any suggestions in this regard? Thank you. Regards, Suresh -- View this message in context: http://r.789695.n4.nabble.com/projection-of-intersection-of-two-planes-tp3060009p3060009.html Sent from the R help mailing list archive at Nabble.com.