I used the "Create Contour" icon in 3D Analyst on a TIN. But now I can't hide, select, or delete those contours. I even tried deleting the base TIN to no avail.
Any help please? Thanks!
I don't have a 3D Analyst license to test this but I just looked up the help and found that Create Contours creates a 3D polyline graphic.
Instructions for selecting graphics in ArcScene are here.
You should then be able to use the