def as_json(options = {})
      cs = self.coord_seq
      if self.has_z?
        { :type => 'point', :lat => cs.get_y(0), :lng => cs.get_x(0), :z => cs.get_z(0) }
      else
        { :type => 'point', :lat => cs.get_y(0), :lng => cs.get_x(0) }
      end
    end
def as_json(options = {})
      cs = self.coord_seq
      if self.has_z?
        { :type => 'point', :lat => cs.get_y(0), :lng => cs.get_x(0), :z => cs.get_z(0) }
      else
        { :type => 'point', :lat => cs.get_y(0), :lng => cs.get_x(0) }
      end
    end
Returns a Hash suitable for converting to JSON.