function val = get_region_param(s,param)% Get a parameter of a "region" object.%% Syntax:%   "val = get_region_param(s,param)"%% Description:%   Returns the field specified by the string "param" in the structure%   for the "region" object "s".% % Examples:%   * Suppose "s = region(5,[1 3 4])".%%   * "val = get_region_param(s,'nstate')" returns the total number of%     states in the universe set for the region "s", which is 5.%% See Also:%   regionval = s.(param);