OSArch Community

New IFC facet-based selector syntax

1. T by theoryshaw on 29 Jan 2024 #

   I might be doing something wrong, but

   IfcFurniture, PredefinedType="CHAIR"

   doesn't seem to work for me.

   video:

2. M by Massimo on 29 Jan 2024 # +2 votes

   @theoryshaw you actually have found two bugs :-)

   1 - If you create a new search group starting from the query (like what you have done in your video), the query gets modified in a wrong way adding an equals symbol

   

   If you delete the equals symbol, the search works ok

   2 - In your file, there are two IfcFurniture objects, but only one has the PredefinedType = CHAIR.

   The other object hasn't the PredefinedType but the panel "object metadata" still shows the PredefinedType into the square brackets

   This is ok

   

   This seems wrong

   

   Cheers, Massimo

3. B by bruno_perdigao on 31 Jan 2024 #

   @Moult Is quantity filtering not implemented yet? If so, I would like to try.

4. T by theoryshaw on 31 Jan 2024 #

   Thanks @Massimo

   That worked for selecting the non-typed based instant object.

   But, how do you select the following type-driven instance, however?

   

5. B by bruno_perdigao on 31 Jan 2024 #

   @bruno_perdigao said:

   @Moult Is quantity filtering not implemented yet? If so, I would like to try.

   Nevermind, I see that they are implemented. However, they don't seem to work with decimal numbers like: ifcopenshell.util.selector.filter_elements(model, "IfcColumn, Qto_ColumnBaseQuantities.Length > 2.5")

   I'm getting this error:

   
   umn, Qto_ColumnBaseQuantities.Length > 2.5
   
                                           ^
   
   
   Expecting: {'PLUS', 'COMMA'}
   

   Maybe it's a case to add "number" as expected value in the grammar.

6. C by c4rlosdias on 31 Jan 2024 #

   try:

   ifcopenshell.util.selector.filter_elements(model, 'IfcColumn, Qto_ColumnBaseQuantities.Length > "2.5"')

7. B by bruno_perdigao on 31 Jan 2024 #

   @c4rlosdias Thanks, that was it. However, it's not working with the ifcopenshell installed with pip. I assume it's not updated yet.

8. C by c4rlosdias on 31 Jan 2024 # +1 votes

   you need to install ifctester

9. M by Massimo on 1 Feb 2024 #

   @theoryshaw i guess in this way

   

   Please note that it selects also the type object so, if you don't want to select also the type object, you can use this:

   

10. T by theoryshaw on 14 Feb 2024, edited 14 Feb 2024 #

    Anyone know how to pull out material psets via the Spreadsheet Import/Export?

    

    The following doesn't work.

    

11. T by theoryshaw on 14 Feb 2024, edited 14 Feb 2024 # +3 votes

    Got it..Like this! :)

    

12. C by Coen on 23 Feb 2024 #

    Where can I find this filter in the latest release? I would like to filter by LoadBearing and EXISTING and make it visible in the 3D view.

13. C by Coen on 23 Feb 2024 #

    

    I'm not fully understanding the correct syntax here.

14. S by steverugi on 23 Feb 2024 #

    @Coen said:

    I'm not fully understanding the correct syntax here.

    I tried Grouping and Filtering on my computer and I noticed some odd behavior:

    • Pset_WallCommon.Status = NEW works

    • Pset_WallCommon.Combustible with True throws an error

    

    • but if I use Pset_WallCommon.Combustible with 1 (instead of True) it works..

    • Pset_WallCommon.IsExternal does not return any selection with either True or 1

    • Same applies to Pset_WallCommon.LoadBearing

    it would be interesting to know the right way to do it, thanks

15. J by jes_r on 23 Feb 2024, edited 23 Feb 2024 # +1 votes

    @steverugi said:

    • Pset_WallCommon.IsExternal does not return any selection with either True or 1

    • Same applies to Pset_WallCommon.LoadBearing

    For me these work with the input 1, true gives the error.

    

    Blender 3.6.8 BBIM 240222

16. B by Bimlooser on 23 Feb 2024 # +2 votes

    @Coen said:

    

    I'm not fully understanding the correct syntax here.

    I think you have to type "TRUE"

    

17. C by Coen on 23 Feb 2024 # +2 votes

    @steverugi

    @Bimlooser

    

18. T by tim on 29 Feb 2024 # +2 votes

    I hope it's ok to piggyback onto this discussion. I have been trying out schedules and have been facing some difficulties.

    Here are my filters and CSV Attributes in BlenderBim:

    

    Here is how it looks in OpenOffice:

    

    Here is what it looks like when I use BBim to build the schedule into a SVG:

    

    The things I would like to solve are:

    1. Is it possible to replace the underscore with a space character? I tried {{value}}.replace("_", " ")

    2. Is there a BBim solution to get ElementType values to appear in place of the USERDEFINED value of PredefinedType

    3. In the ods file my column headings are bold, should they pass through to the SVG?

    4. In the ods file I wrapped my cells but this doesn't seem to be translating correctly. Is there a way to fix this in OpenOffice?

    5. Is there a way in BBim to apply rounding to a {{value}} that consists of multiple values?

    6. I can't get my storey names to appear, what am I doing wrong?

    7. Is there a BBim solution to not show the None values (or just show one)?

19. T by theoryshaw on 1 Mar 2024 #

    Good questions. I think i only know the following...

    4. It's advisable to use opengost-b font when making your svg schedules. A lot of spacing, etc, is currently hardcoded assuming this font. If you use a different font, things can start looking weird.

    5. maybe try storey.Name?

20. T by tim on 1 Mar 2024 #

    Thanks @theoryshaw. I did first try storey.Name but that didn't work and I presumed so because I am initially pulling in types not instances.

21. A by Arv on 2 Mar 2024 # +1 votes

    @tim 2. Try predefined_type

22. T by theoryshaw on 4 Mar 2024, edited 4 Mar 2024 # +1 votes

    @tim I see you're using Tag as the ID or Type Mark. I wanted to do that too, and seems to be the way to do it, but might want to read the following...

    • https://community.osarch.org/discussion/1428/

    • https://community.osarch.org/discussion/1129/

23. T by tim on 4 Mar 2024, edited 5 Mar 2024 #

    Thanks @theoryshaw, looks like the 'correct' way is to use the name field then. If the Tag field is only used by external exporters, should it not be a read-only value in BlenderBIM, or maybe it shouldn’t be in the UI at all. Is there a use case for having it visible or editable?

24. M by martin on 7 Mar 2024 #

    Would it be possible to select all objects belonging to a bSDD classification such as https://search.bsdd.buildingsmart.org/uri/buildingsmart/ifc/4.3/class/IfcBuiltSystemLOADBEARING

25. A by Andrej730 on 14 Mar 2024 # +1 votes

    @martin said:

    Would it be possible to select all objects belonging to a bSDD classification such as https://search.bsdd.buildingsmart.org/uri/buildingsmart/ifc/4.3/class/IfcBuiltSystemLOADBEARING

    Sure, it's ifcopenshell.util.selector.filter_elements(ifc_file, 'IfcTypeProduct, IfcProduct, classification="IfcBuiltSystemLOADBEARING"')

    Or from BBIM UI:

    

1. Page 1
2. 2
3. 3
4. 4
5. 5

Login or Register to reply.