*Created originally on Bitbucket by [paugier (Pierre Augier)](https://bitbucket.org/%7Beb327c54-cadd-4fce-9edd-f8fe047a9b93%7D/)* It seems to me that some methods of operators2d should be in sw1l.operators: An incomplete list: - uxuyetafft_from_afft - rotfft_from_qfft - rotfft_from_afft @avmo can you have a look at this such that we have a smaller operators2d.