Interpolate using nearest-neighbour approximation
        Returns the same as interpolate(lons,lats,data,order=0)

def interpolate_nearest(self, lons, lats, data):
        """
        Interpolate using nearest-neighbour approximation
        Returns the same as interpolate(lons,lats,data,order=0)
        """
        return self.interpolate(lons, lats, data, order=0)