topic Re: Extracting GDL parameters from objects into Expression Defined Property Values in Collaboration with other software

Extracting GDL parameters from objects into Expression Defined Property Values

Anonymous — Tue, 22 Oct 2019 14:56:42 GMT

Hello,

I have a question about "Expression Defined Property Values":

In the expression, is there any way to access the parameters contained in an object's GDL script? (Not the general ones. I know you can use those, but it is not enough.)

Or, similarly, is there a way to access custom-defined IFC parameters? (Because the previous ones can be linked into these.)

Well, I suppose that was two questions. Anyway, right now it seems to me that there is no way to do this. Apparently, for some reason Graphisoft does not want us accessing any of this information through the Expressions, which seems somehow backwards, because the tool itself is very powerful. Has anyone found a way around this? I would really like to be wrong.

Re: Extracting GDL parameters from objects into Expression Defined Property Values

JaseBee — Wed, 23 Oct 2019 02:50:05 GMT

When they introduced properties I instantly thought of this, would be great. However at the same time they added the properties the seemed to remove the ability to map to IFC internally (i think you can still map for export)

Short answer is, I tried, couldn't get it to work.

Would also like to be wrong on this one...

https://archicad-talk.graphisoft.com/viewtopic.php?f=6&t=62164

Re: Extracting GDL parameters from objects into Expression Defined Property Values

Anonymous — Wed, 23 Oct 2019 14:52:29 GMT

JaseBee wrote:
When they introduced properties I instantly thought of this, would be great. However at the same time they added the properties the seemed to remove the ability to map to IFC internally (i think you can still map for export)

Short answer is, I tried, couldn't get it to work.

Yeah, I'm prepared to accept that there is currently no way to do this. And, it seems this isn't possible in AC23 either (haven't tried, mind you, just looked at the new features list). Does anyone in these forums or @ Graphisoft have any idea why this is not a thing? I think it is a massive oversight on the developer's part.

It seems like a no-brainer feature which should definetely exist, but the parameters just don't seem to talk to each other. I just thought of asking if anyone here figured out a loophole or found/made an add-on which could make this happen.

About the IFC thing: not sure if this is what you mean but they didn't remove the IFC parameters, you can still link object parameters into IFC attributes and schedule them. They just hid this feature in a bunch of really obscure menus in the IFC settings (unfortunately I don't know what the menu items are in english...)

Re: Extracting GDL parameters from objects into Expression Defined Property Values

Anonymous — Tue, 11 Aug 2020 08:32:29 GMT

Sorry for the necro, but I thought I'd ask if this is still a no-go, or has something happened in newer AC versions that make this possible?

Re: Extracting GDL parameters from objects into Expression Defined Property Values

Laszlo Nagy — Tue, 11 Aug 2020 13:39:57 GMT

No, it is still (Archicad 24) not possible to use internal parameters of GDL Objects in Expression-defined Property definitions.