PolyCol                 Create list of colors depending on attribute
                        data.
bubbleGoogleMaps        Create a bubble plot of spatial data on Google
                        Maps
bubbleSP                Create bubble data in form of
                        SpatialPolygonsDataFrame.
elSPDF                  Create ellipses in form of
                        SpatialPolygonsDataFrame.
ellipseGoogleMaps       Create plot of ellipses from spatial points
                        data frame on Google Maps, by using three
                        attributes: semi-major axis, semi-minor axis,
                        and orientation in degrees.
iconlabels              Create icon markers depending on attribute
                        data.
mcGoogleMaps            Create a plot of spatial data on Google Maps,
                        creates and manages per-zoom-level clusters for
                        large amounts of markers
pieSP                   Create pie charts data in form of
                        SpatialPolygonsDataFrame.
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.
stfdfGoogleMaps         Create a plot of spacetime (STFDF) data on
                        Google Maps
stplotGoogleMaps        Create a plot of spacetime (STDIF,STFDF) data
                        on Google Maps
vectorsSP               Create radius vector data in form of
                        SpatialLinesDataFrame.
