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IfcCSV - How to export IfcClassificationReference data to CSV

1. C by chachi_ws on 6 Dec 2023, edited 17 Dec 2023 # +2 votes

   Can anybody tell me what the syntax is to extract classification data to csv? I've already looked at the documentation (https://blenderbim.org/docs-python/ifccsv.html

   

2. F by fbosche on 6 Dec 2023 #

   I'd like to know that too :)

3. T by theoryshaw on 6 Dec 2023 # +1 votes

   The following PR adds classification, but I got lost when it came to importing the classification back into BB.

   It works, however, on export. :)

   https://github.com/IfcOpenShell/IfcOpenShell/pull/3968

   @Moult think it's worth still pulling in?

4. A by avico on 6 Dec 2023 # +1 votes

   Hi all,

   syntax like this work for me:

   in filter I usually use "IfcElement" (without commas) and in CSV attribute "Pset_Name"."Pset_Property"

   

5. T by theoryshaw on 7 Dec 2023 # +1 votes

   @theoryshaw said:

   The following PR adds classification, but I got lost when it came to importing the classification back into BB.

   It works, however, on export. :)

   https://github.com/IfcOpenShell/IfcOpenShell/pull/3968

   @Moult think it's worth still pulling in?

   Looks like Dion merged it. @chachi_ws @fbosche give it try. :)

6. F by fbosche on 9 Dec 2023, edited 9 Dec 2023 #

   If I use "classification", I get the IFC file line, not the value. For example:

   #44685=IfcClassificationReference('https://identifier.buildingsmart.org/uri/nbs/uniclass2015/1/class/Pr_20_93_71_18','Pr_20_93_71_18','Concrete diaphragm wall units',#44683,$,$).

   @theoryshaw : you don't get that?

7. T by theoryshaw on 9 Dec 2023, edited 9 Dec 2023 #

   try classification.Name

8. T by theoryshaw on 9 Dec 2023 # +1 votes

   classification.Location: https://identifier.buildingsmart.org/uri/nbs/uniclass2015/1/class/Pr_20_93_71_18

   classification.Identification: Pr_20_93_71_18

   classification.Name: Concrete diaphragm wall units

   see the other attributes you can pull out: https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcClassificationReference.htm

9. C by chachi_ws on 15 Dec 2023, edited 15 Dec 2023 #

   It works, thanks! After I installed the last BlenderBIM release from GitHub (blenderbim-231215)

   

   

10. F by fbosche on 17 Dec 2023 #

    When I use the Uniclass reference (using bSDD), I get the name right, but don't know how to access the Uniclass code. In the ItemReference, I get "None". I've been trying with the "Uniclass 2015" as active domain; could that be the source of the problem?

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