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buildingSMART / bSDD

The buildingSMART Data Dictionary repository, where we publish the documentation, examples and more. We don't publish here the data, the source code of the bSDD service or the front end of the website.
https://www.buildingsmart.org/users/services/buildingsmart-data-dictionary/
MIT License
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Dynamic properties #76

Closed TZwielehner closed 2 months ago

TZwielehner commented 9 months ago

Is your feature request related to a problem? Please describe. Please provide an explanation about how dynamic properties should be defined. Functions? Formulas?

Describe the solution you'd like Example in Excel template, documentation

atomczak commented 9 months ago

Hi @TZwielehner

This peculiarity comes straight from the ISO23386:2020: image

And we implemented it to be compliant with the ISO, but I have never seen anyone using it in practice (or software capable of interpreting it). 🤷‍♂️

PA031 'Dynamic property' in bSDD: 'IsDynamic' takes a boolean. PA032 'Parameters of the dynamic property' in bSDD: 'DynamicParameterPropertyCodes' takes a list of codes of properties.

The example (how I see it):

Properties: P1 (distance), P2 (time), P3 (speed). P3.IsDynamic: true P3.DynamicParameterPropertyCodes: [P1,P2] It says that value of P3 depend on P1 and P2, but it doesn't say that the formula is speed=distance/time.

Perhaps @grandfr or @Erik-RN you have a better idea of how to use dynamic properties?