The maps calculated by AutoGrid may be used to visualize and analyze the surface characteristics of biomolecules. You can think of them as a spatial image of the molecules that bind to the biomolecule. We developed the program AutoLigand to use these maps to identify the regions of proteins that have strongest binding characteristics, localizing the preferred binding sites of ligands.
You can find more information about the science behind AutoLigand in:
Automated Prediction of Ligand-Binding Sites in Proteins