I’m not 100% sure if this is what you’re after, but acquiring coordinates is available in Dynamo via Python (in Revit 2018 and above); see this post here: Is it possible to Automate Revit's Acquire co-ordinates? - #2 by awilliams
I’m not 100% sure if this is what you’re after, but acquiring coordinates is available in Dynamo via Python (in Revit 2018 and above); see this post here: Is it possible to Automate Revit's Acquire co-ordinates? - #2 by awilliams