Greetings! Apologies, there was a glitch in the code I sent you that I didn't catch while testing. `assign_coords` doesn't work in-place, but returns a new Dataset that you need to hold onto and use. There's also an issue where Metpy's plotting expects longitude to have some units, so you need to assign those units after assigning the coordinate. Try this: ds = ds.assign_coords(longitude=ds.longitude - 360) # Set units on longitude ds.longitude.attrs['units'] = 'degree' Cheers! Ryan Ticket Details =================== Ticket ID: AEC-201933 Department: Support Python Priority: Low Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.