Forums >> Revit Building >> Technical Support >> Formulas, arrays and track lighting

AmyDulak

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Joined: Tue, Apr 15, 2014
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HELP. I'm working in 2015 and building a track lighting fixture. I have it working *almost* how I want it. 

The fixture head is a seperate lighting family that is nested into a generic family. I used the array tool to multiply the head to fill in based on the length of the track. When I did the array, I set it to Move to 2nd, set a max of 16 heads and specified light spacing with a paramater. Works like a charm.

HOWEVER, I'm trying to set my array offset. So the head is 8" inside the track on the "start" side of the array, but then will not be equal on the opposite end (see attached image). My goal is to have both ends equal and then let Revit self-populate the heads in the interior. I'm not up to par on formulas (I'm just a mere interior designer with ZERO programmer skills). I'm using them to fill the number of lights and I know a formula is probably what I need...but I can't figure out how to make it work. 

EDITED TO ADD: Also, if anyone knows how to set it up so that I can change the head direction live in a Project when it's an array, I would be interested in that info as well. 

Please and thank you in advance!

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ronmalit

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Joined: Thu, Mar 29, 2012
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hi Amy

for array setting out, formula, and number of heads...

you can disect and study this file found on this path (depends on how you installed it and revit version):

"C:\Program Files\Autodesk\Revit 2014\Samples\rac_advanced_sample_family.rfa"

for the head direction, you can add a control (flip) in the family, but if you want to flip each head individually... it will be different story because you are using ARRAY.

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