If I recieve an IFC where all geometry is referenced to global coordinates, is there a tool available to move the base point or the geometry closer (local coordinates)?

Yes, there are a few ways to do this. If you want to do it headlessly, IfcPatch , which is part of IfcOpenShell and the BlenderBIM Add-on does it. Just run: $ ifcpatch -i input.ifc -o output.ifc -r ResetAbsoluteCoordinates The logfile which denote the offset it has determined. Also, if you don’t w…

Thanks a lot for the answers guys! I’ve been trying to figure out how to run ifcpatch from Windows. I used anaconda to install ifcopenshell. Is it possible to run ifcpatch from a python script? I also tried to run ifcpath from Anaconda Promt like this, but got the following error: python ifcpatch.…

It depends with which software the IFC file was created, but if you know how the data is structured, you could be able to edit the file with a script. I use Python to tackle such issues and parse the IFC as a text file. For simple and fast fixes, it’s enough, but it definitely isn’t an integrated s…

You’ve almost got it! Unfortunately you spotted a bug :slight_smile: It’s now fixed: Fix broken ResetAbsoluteCoordinates IfcPatch recipe committed 10:04PM - 26 Mar 20 UTC (UTC) [Moult] Moult …

Thanks! It worked like a charm in Anaconda Promt. Very quick too. # Loading IFC file ... # Loading patch recipe ... # Patching ... # Writing patched file ... # All tasks are complete :-)

Another solution, but specific for importing IFC by shared coordinates in Revit:The importer from Geometry Gym seems to work fine.

Simplebim by Datacubist has a graphical interface for location changes. (works well most of the time, but there is I think still today a rounding error for extremely large figures) [image] Makes BIM Normal | Simplebim Makes BIM Normal on Simplebim…

Thanks for the suggestion! I actually had a look around the menus in Simple BIM, but couldnt find a commamd to change coordinates. Maybe you can give me a clue?

Open the Model Placement Editor dialog from ‘Add Palette’. There’s several ways to use this, the simplest maybe just to use ‘Pick Origin’ and click on the (survey?) point which you may know is designated as the local coordinate origin… As said, there are some issues with this though in rounding er…

Most software has different options to import / export to locations. BricsCAD DWG has these two. Either global or site specific [BricsCAD site options]

Tools to move IFC geometry from global coordinates to local

Users IFC

Hans_Lammerts March 25, 2020, 8:05pm 2

I doubt it. One save way (not screwing with notepad) is Import 》 move 》 export

Topic		Replies	Views
Change the coordinates of the IFC Model IFC	0	596	July 1, 2023
Offset stored in IFC file, how and where? Users	8	3938	July 15, 2020
Coordinates of the IfcLocalPlacement/IfcCartesianPoint IFC	23	9980	October 2, 2019
Revit IFC Placement Users ifc2x3 , ifc4	0	688	November 18, 2021
Object's position differ from its centroid's coordinates Developers	7	2168	January 16, 2020

Tools to move IFC geometry from global coordinates to local

Related topics