How to set up IFC export to show empty values?

Hi David,

David Blahák said:

As currently set, IFC exports only the attributes that are filled in (on the right side). 

recently I discovered the same issue ;-)

I guess the question should be not "to show", but "to export empty values".

David Blahák said:

As currently set, IFC exports only the attributes that are filled in (on the right side). 

It is not quite clear what do you mean "on the right side". The picture shows iModel / iTwin viewer (so I guess BIS data is displayed), but not what is visible in exported IFC.

With regards,

  Jan

Hi David,

We made a change to the IFC mapping so that it would export blank properties. This is the relevant part of the mapping file:

/* Process empty properties (without assigned values). Default value is false. */
"ProcessEmptyProperties" : "false",

You would change the "false" to "true" and it will give you blank property values. To use a custom mapping file, you need to be using itwin.bentley.com or from a saved view in order to have the option in the UI that will allow you to select the mapping file.

You can visit this page:

https://communities.bentley.com/products/digital-twin-cloud-services/itwin-services/w/synchronization-wiki/55909/modifying-default-mapping-for-ifc-exports

and the first entry has a link to the history of the schema mapping. Download the latest version, modify it as indicated above and then select this modified file when running the IFC Export. 

I hope this helps.

Tim