Reported by Thilo Pirling and his post-doc (Ranggi Ramadhan). Two issues:
- Occasionally (not always), when concatenating an scan (e.g. 37847:37848 from exp 1-02-315, cycle 211) of N steps, the output after calling to straight_1d has N+1 steps.
- Again occasionally, after calling to str_fit the scanned values written in the output seem to be swapped.