rgl is a 3D visualization system based on OpenGL. It provides a medium to high level interface for use in R, currently modelled on classic R graphics, with extensions to allow for interaction.
The arc3d() function can't handle degenerate arcs, e.g. ones that only change their distance from the center by moving out in a straight line. There should also be some compromise for arcs starting or ending exactly in the center.
The
arc3d()function can't handle degenerate arcs, e.g. ones that only change their distance from the center by moving out in a straight line. There should also be some compromise for arcs starting or ending exactly in the center.