bubbleGoogleMaps        Create a bubble plot of spatial data on Google
                        Maps
ellipseGoogleMaps       Create a ellipses plot from spatial points data
                        frame on Google Maps, by using three
                        attributes: semi-major axis, semi-minor axis,
                        and orientation in degrees.
plotGoogleMaps          Create a plot of spatial data on Google Maps
segmentGoogleMaps       Create a segment circles - pie charts plot of
                        spatial data on Google Maps, by using two or
                        more related attributes.
