@classmethod
def from_comp(cls, xx=0, xy=0, xz=0, yx=0, yy=0, yz=0, zx=0, zy=0, zz=0):
    """
        Return ``VelGrad`` tensor. Default is zero tensor.

        Keyword Args:
          xx, xy, xz, yx, yy, yz, zx, zy, zz (float): tensor components

        Example:
          >>> L = VelGrad.from_comp(xx=0.1, zz=-0.1)
          >>> L
          VelGrad:
          [[ 0.1  0.   0. ]
           [ 0.   0.   0. ]
           [ 0.   0.  -0.1]]

        """
    return cls([[xx, xy, xz], [yx, yy, yz], [zx, zy, zz]])
