Draw lines at shared coordinates?

[Mike.Buttery]

Have a look at my post here which may be able to assist

Inserting a family into a coordinated site with coordinates from an excel spreadsheet

There are multiple coordinate systems in play in Revit, Internal, which Dynamo uses, Project which is the project datum coordinate system, typically a convenient point like intersection of grids 1 & A, and finally Survey which maps a geolocated coordinate system. Your set out data will have to be translated into the internal coordinate system for Dynamo to be able to place your elements. Check the coordinate units match the project units (m vs mm) and adjust Use Coordinates.BasePoint node to …