Function 'atan' not defined for input parameter of type 'CVX',how to solve this problem Nonconvex Mar 30, 2021 Z zhangjing Mar 30, 2021 #1 Function ‘atan’ not defined for input parameter of type ‘CVX’,how to solve this problem M Mark L. Stone Mar 30, 2021 #2 Z zhangjing Apr 7, 2021 #3 Replying to #2 Thank you for your advice. I’ll have a try