(self, verbose=True)
Delete grid.

        :returns: ``None``

        >>> geo_t.dropGrid()
        >>> geo_t.hasGrid()
        False

        Attempt to use the grid, failure.

        >>> sorted(geo_t.findNearKey('frbve', grid=False))[0:3]
        [(0.0, 'frbve'), (7.63..., 'fr2698'), (9.07..., 'fr3065')]
        >>> sorted(geo_t.findNearKey('frbve'))[0:3]
        Traceback (most recent call last):
        ValueError: Attempting to use grid, but grid is None

        Adding the grid again.

        >>> geo_t.addGrid(radius=50, verbose=True)
        >>> sorted(geo_t.findNearKey('frbve'))[0:3]
        [(0.0, 'frbve'), (7.63..., 'fr2698'), (9.07..., 'fr3065')]
Delete grid.
Delete grid .
def dropGrid(self, verbose=True):
        """Delete grid.

        :returns: ``None``

        >>> geo_t.dropGrid()
        >>> geo_t.hasGrid()
        False

        Attempt to use the grid, failure.

        >>> sorted(geo_t.findNearKey('frbve', grid=False))[0:3]
        [(0.0, 'frbve'), (7.63..., 'fr2698'), (9.07..., 'fr3065')]
        >>> sorted(geo_t.findNearKey('frbve'))[0:3]
        Traceback (most recent call last):
        ValueError: Attempting to use grid, but grid is None

        Adding the grid again.

        >>> geo_t.addGrid(radius=50, verbose=True)
        >>> sorted(geo_t.findNearKey('frbve'))[0:3]
        [(0.0, 'frbve'), (7.63..., 'fr2698'), (9.07..., 'fr3065')]
        """
        if self.hasGrid():
            self._ggrid = None
        else:
            if verbose:
                print 'No grid to drop.'
def dropGrid ( self , verbose = True ) : if self . hasGrid ( ) : self . _ggrid = None else : if verbose : print 'No grid to drop.'