offset

[RavchukNA]

3D model (exported as a 3DS-file) and shape from which it was taken will not lie to each other in the AIM (see picture)? Moreover, if the 3DS file again to convert into shape (such as ArcGIS), all the same.

[C3D_TomR]

I recall David Lawrence talking about an offset issue when moving data from InfraWorks into 3DS Max. I recommend watching the full recorded version of the class David presented at AU 2015. If you're short on time, skip to the 41 minute mark and listen to the portion where he begins talking about double precision and the offset issue including how he resolves the issue. If this workaround is the fix for your issue, please mark Accept as Solution so others can find it as well. Also I'll make sure it gets documented in the Autodesk Knowledge Network for future. Kudos are appreciated too.

Link to class:

CI10977: Make It a Round Trip: Leave One-Way Workflows Behind with InfraWorks 360 and AutoCAD Civil ...

[Karsten.Saenger]

Hi @RavchukNA,

this issue could also be caused by the extend of the source data and the way InfraWorks handles the coordinate systems (CS).

Looking at your screenshot with the rail track I am assuming the issue is caused by the extent of the data.

The larger the extent of a a file the more offset you get at the borders. This is caused by the CS reference point (= area with highest accuracy) and the curvature of the earth. 

You can easily check if the size of the source data is the reason for the offset by creating data with a smaller extent and see if it is positioned correctly in InfraWorks.

The Autodesk Knowledge Database covers this topic with a few articles:

• http://knowledge.autodesk.com/article/Import-3D-DWG-or-3D-model-data-into-Infraworks-results-in-an-o...
• http://knowledge.autodesk.com/article/How-to-export-a-3D-Model-with-coordinates-so-that-the-model-is...

Regards,

Karsten.

[markus_briglmeir]

I tend to back Karsten's assumption. 

As a hack you could use the offset settings in the data configuation dialog to get a better result. Not nice, and agreed that it should be better out of the box, but you might get closer to want you want.