def rset(self, argv):
        self._print_msg(self._client.rset())
This function return all the non-zero coordinates that the image contains.
dataset/ETHPy150Open kdart/pycopia/net/pycopia/smtpCLI.py/EmailClientCLI.rset--crossover with--dataset/ETHPy150Open neuropoly/spinalcordtoolbox/scripts/msct_image.py/Image.getNonZeroCoordinates