Field is a delegate for the MidasPlus graphics program that overlays the grids created by makeGrid or makeDiffGrid on top of a three-dimensional molecular structure. Field permits interactive contouring and coloring of the van der Waals and electrostatic grids, allowing the user to visualize areas of the molecule where modifications might be favorable or unfavorable. Field is invoked like any other MidasPlus delegate; from within MidasPlus, load the structure of interest (the reference structure used in makeGrid), and then start the Field delegate (refer to the MidasPlus manual for details on the delegate function).
Once the Field delegate is started, the following commands may be used:
If you do not have access to the MidasPlus program, or wish to use another visualization package, the exact format of the vdw and esp grid files is supplied below.