computation of conformal maps to polygonally bounded regions

				function M = hplmap(M)
				%HPLMAP Convert generic Schwarz-Christoffel map object to half-plane map.
				%   HPLMAP(M) creates a hplmap object based on the polygon and
				%   options contained in M.
				%   
				%   See the HPLMAP class documentation.
				
				%   Copyright 1998 by Toby Driscoll.
				%   $Id: hplmap.m 7 1998-05-10 04:37:19Z tad $
				
				M = hplmap(M.polygon,M.options);