topic Layers in expressions in Project data & BIM

Layers in expressions

RandyC — Tue, 30 May 2023 10:36:11 GMT

Can an expression be restricted to a specific layer ? if so any idea how ?

Thanks , Randy

Re: Layers in expressions

poco2013 — Fri, 28 Dec 2018 20:29:56 GMT

Yes -- Simply include the property 'layer' within your IF statement as in: IF ( Logical, ValueIfTrue, ValueIfFalse )

Layer is listed under general parameters and is available for all elements.

Re: Layers in expressions

RandyC — Fri, 28 Dec 2018 21:32:40 GMT

Thanks poco2013 for the insight however I think I am not doing the expression correctly
I am trying to get the area of all zones on the "floor area" layer - can you show me my error ?
Thanks , Randy

Re: Layers in expressions

poco2013 — Fri, 28 Dec 2018 22:46:05 GMT

Your using a assignment -- try a conditional like:

IF ( CONTAINS ( "A - Zones - Room.3D", {Property:General Parameters/Layer}, FALSE ), {Property:Zone/Measured Area}, 0 ft2 )

EDIT: Note all returns must have the same units

Re: Layers in expressions

RandyC — Fri, 28 Dec 2018 23:43:47 GMT

Gerry you seem to have expressions down pat -- I however am lacking
I did get a result with :

IF ( CONTAINS ( "Floor Area", {Property:General Parameters/Layer}, FALSE ), {Property:Zone/Measured Area}, 0 ft2 )

when I select a zone it shows as working but
when I introduce it to a schedule it only returns "0"

Thank you for your help ,
Randy

Re: Layers in expressions

poco2013 — Sat, 29 Dec 2018 00:34:14 GMT

If its returning 0, probably the layer name is somehow mismatched as it is returning the false statement

Double check by first selecting your zone then open property manager, select your property, click on Evaluate in your property manager to see what is returned and then troubleshoot there.

Make sure you have set the classifications properly both for the property and the zone.