3D_grapher ---------- REQUIREMENTS: VMD Version 1.7 or greater DESCRIPTION: draw_surface generates sample points of a function 'g' of two variables passed to it. It then draws a smooth surface through these points. Only one argument is given to draw_surface, namely the function of two variables to plot. Limits of evaluation and interval size can be set within the body of the procedure. Defaults are -5 to +5 in x and y, with a step size of 0.5. To start you off, a sample function, called 'g' has been provided. You may want to just alter this function when plotting your own data, to be sure that the syntax is correct. PROCEDURES: g - definition of the two-variable function to graph draw_surface - calculates points of g and graphs them EXAMPLE USAGE: *To plot the function g, which is a function of two variables draw_surface g EXAMPLE OUTPUT: Image of the default function included with the script. DOWNLOAD FILE: 3dgraph.tcl AUTHOR: Andrew Dalke (dalke@ks.uiuc.edu)