Skip to main content
Question

turn a IfcGlobalUniqueId to a normal GUID and back

  • January 2, 2023
  • 2 replies
  • 84 views
B

I have a question; how can we turn a IfcGlobalUniqueId to a normal GUID with FME?

And is it possible to turn it back in a IfcGlobalUniqueId with FME, because of the buildup of a IfcGlobalUniqueId.

 

I am hoping someone can help me by either passing a bit of Python-code or maybe Safe can create a Custum Transformer to help with this problem?

 

We want to use a IFC for our asset applications and our 3d city-model.

So, we can use the IFC from our engineering-team to fill the other applications with attributes. And when we need to develop new streets, we can give them the information back.

 

Beste Regards,

Bert

 

@Takashi Iijima​ @daveatsafe​ 

2 replies

M
Forum|alt.badge.img+2
  • markatsafe
  • 1891 replies
  • January 5, 2023

@bertd​ This blog seems to link to the github code you might need to convert from an IFC GUID representation to GUID.

daveatsafe
Safer
Forum|alt.badge.img+19
  • daveatsafeSafer
  • Safer
  • 1637 replies
  • January 6, 2023

Hi @bertd​,

The code provided by Mark's link was very helpful when used in a PythonCaller. However, when I tested the process, I found that my sample IFC file had IfcGlobalUniqueId values that did not map properly to UUIDs. This suggests that the creator of the file made the IfcGlobalUniqueId values directly, not by converting from valid UUID values.

This problem is discussed at https://forums.buildingsmart.org/t/ifcgloballyuniqueids-spec-description-is-incorrect-proposal-to-simplify/1083.

FME creates UUIDs then converts them when it writes to IFC files.


Community Stats

32,066
Posts
121,745
Replies
39,692
Members

Latest FME

Terms & ConditionsCookie settingsAccessibility statement
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.