For those of you who have read my blog posts, attended my e201s, taken a course with me, or seen me present at a Revit Users Group, you are already aware I am a big fan of the Revit Coordinate System. After spending a considerable amount of time studying how models link and how Shared Coordinates work, the system makes complete sense to me. Well, for the most part, but it did take some time to get there. For instance, I was initially convinced the Project Base Point and Internal Origin Point were the same thing, but after doing lots of testing, I did realize they were, in fact, not the same points.
Starting in Revit 2010, Autodesk provided the ability to display the location of the Project Base Point and the Survey Point by turning on their visibility states in the Visibility/Graphics dialogue box. In my opinion, this was a game changer for the Revit Coordinate System, because it gave us a visual explanation of how the Revit coordinates work. Prior to Revit 2010, understanding the Coordinate System was challenging, to say the least.
While we can now see the Project Base Point and Survey Point markers, we still cannot see the Internal Origin Point. Finding the Internal Origin Point is quite easy, but wouldn’t it be nice if we had a marker that could visually display the location of the Internal Origin?
My video, Creating an Origin Point Marker for Revit Projects, shows you one of the ways in which you can create a marker for the Internal Origin Point. It is important to note, you need to ensure you find the Internal Origin first. To do this, start with the out of the box Revit Template or use the Move to Startup Location feature on the unclipped Project Base Point. Once you have found the Internal Origin, you will be able to place the Marker Family and pin it into place to prevent accidental movement. Also, keep in mind, the marker family will crop out of your view if it lies outside of the crop region.
If you would like to show support for the idea of having a native Revit marker for the Internal Origin Point, then I encourage you to visit my post on the Autodesk Website and vote for this feature by clicking the “Vote up” icon on the left hand side of the page.
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AEC Senior Application Specialist
Sash is a registered Architect and LEED Accredited Professional who holds a Master of Architecture from Montana State University. Sash’s experience includes project management, BIM management, and design for architectural firms in California, Montana, and Oregon. In addition to being a Bluebeam Certified Instructor, Sash is an Autodesk Certified Instructor who provides Revit Architecture training and solutions for AECO firms. Find Sash on Twitter.