Compute Getis and Ord’s G for GeoRaster

        Usage:
        geo.pysal_G(permutations = 1000, rook=True)

        arguments passed to raster_weights() and pysal.G
        See help(gr.raster_weights), help(pysal.G) for options

def pysal_G(self, **kwargs):
        """
        Compute Getis and Ord’s G for GeoRaster

        Usage:
        geo.pysal_G(permutations = 1000, rook=True)

        arguments passed to raster_weights() and pysal.G
        See help(gr.raster_weights), help(pysal.G) for options
        """
        if self.weights is None:
            self.raster_weights(**kwargs)
        rasterf = self.raster.flatten()
        rasterf = rasterf[rasterf.mask==False]
        self.G = pysal.G(rasterf, self.weights, **kwargs)