def METHOD_NAME(self, locs):
    """Compute displacement field at locations.
    """
    (npts, dim) = locs.shape
    disp = numpy.zeros((1, npts, self.SPACE_DIM), dtype=numpy.float64)
    disp[0, :, 0] = exx * locs[:, 0] + exy * locs[:, 1] + exz * locs[:, 2]
    disp[0, :, 1] = exy * locs[:, 0] + eyy * locs[:, 1] + eyz * locs[:, 2]
    disp[0, :, 2] = exz * locs[:, 0] + eyz * locs[:, 1] + ezz * locs[:, 2]
    return disp