def METHOD_NAME(self, locs):
    """Compute strain field at locations.
    """
    (npts, dim) = locs.shape
    METHOD_NAME = numpy.zeros((1, npts, self.TENSOR_SIZE), dtype=numpy.float64)
    METHOD_NAME[0,:, 0] = exx
    METHOD_NAME[0,:, 1] = eyy
    METHOD_NAME[0,:, 2] = ezz
    METHOD_NAME[0,:, 3] = exy
    return METHOD_NAME