Duncan Murdoch RGL: An R Interface to OpenGL ***************************** OpenGL is a cross-platform library for 3D rendering. In this paper I will describe RGL, an R package providing a simplified interface to it. The style of the interface follows that of the older S or R plotting functions, with some differences. In particular, it is possible for the user to manipulate objects on the screen, and programmatically to change the appearance or content of the display. Duncan Murdoch Associate Professor University of Western Ontario London, Ontario, Canada murdoch@stats.uwo.ca http://www.stats.uwo.ca/faculty/murdoch