Auto – Origin to Origin
Auto – Origin to Origin uses the World Coordinates System to place the origin of the incoming geometry at the origin of the Revit host model. Use “Auto - Origin to Origin” when you need a common point to coordinate the position of multiple imports or links. The origin points of the host model and the incoming geometry remain constant, regardless of the geometry in each file.
Auto – By Shared Coordinates
Auto – By Shared Coordinates is used to combine multiple models and files together into a single project, relative to the actual project site. Use “Auto - Shared Coordinates” to establish the relative positions of the multiple links from different sources and ensure that those relationships are maintained. Shared coordinates should be derived from only one file. That one file defines the coordinates for all other files that compose the project.
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