The map extent and central meridian is based on the extent of your dataset. In this case, it results in a map that is Pacific-centered as opposed to Atlantic-centered.
Once you have the map created, you can pin it to be Atlantic-centered, though if you were to then zoom and do more interaction with the map and return to 'full extent' it would return to Pacific-centered based on the extent of your data.
AFAIK there is no way to enforce a specific central meridian for the map other than the default that is data extent-based.
Sarah – thanks for your answer. How do you pin the map for it to be Atlantic-centered vs Pacific … can’t seem to find the option.
Thanks in advance
I am not trying to be difficult but I don’t seem to understand where/how to do that … is there a screenshot/tutorial that I can rely on.
No problem! Here is a helpfile - see #3 'the view toolbar'
I would have searched and linked that before instead of just attaching a graphic, but was using the 'reply by email' option and I screwed it up a bit
The 'pin' or 'fixed extent' will just lock down the zoom and extent for a single view on the map. You should be able to adjust to Atlantic-centered and pin on that and have the map just stay (until you start panning and zooming again, at least)
Got it, thank you !