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Fri, Jul 22, 2011 at 12:37:14 PM | Array Formula Problems

#1

cundall


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Joined: Wed, Apr 1, 2009
54 Posts
5 Stars: 1 Votes


Can anybody tell me where i am going wrong with this generic line array family within the attachment ?

I want to be able to add a new Void every 225mm when i extend the line. the first time i tried to do it i got a error message saying ''THERE IS A CIRCULAR CHAIN OF REFERANCES AMONG THE FORMULAS''  so i decided to start again from fresh but i am getting nowhere with it.

Thanks

 

 



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Fri, Jul 22, 2011 at 1:40:18 PM | Array Formula Problems

#2

emgeeo


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Joined: Wed, Mar 12, 2008
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3.5 Stars: 7 Votes


i don't understand the logic of your family...

 

it is a structural framing member nested into a line-base generic model family.  Since the beam family is line-based anyways, why load it into another line-based family?  You should be able to accomplish everything you need in the beam family.

 

If I understood the context in which you are using this family, I might be able to help you more.

 

I say this because you speak of voids, but I think you really mean clear spacing between elements.  Please clarify what you intend to use the family for.


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Fri, Jul 22, 2011 at 2:52:09 PM | Array Formula Problems

#3

cundall


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Joined: Wed, Apr 1, 2009
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5 Stars: 1 Votes


Sorry i didnt really explain what i wanted to achieve, im trying to make a windpost column with voids as the hole fixings. the hole fixings (voids) are @ 225c/c, so i wanted to make the windpost to add a new void when it is extended over 225mm.

Im new to families so i thought that you could only do this by using a generic line based family. i want to get used to working with formulas because i dont no very much about the rules and the way you have to type them.

please see the attachment below to have an idea what i mean. i just want the voids to automatically add itself when i increase its height.

thanks for your time



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Mon, Jul 25, 2011 at 4:47:45 AM | Array Formula Problems

#4

lab21


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Joined: Sun, Nov 5, 2006
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5 Stars: 1 Votes


Try this.

Arrayed parameters can be tricky things. To add a parameter to an array, right click on the array line (just under the number) and select 'edit label' 

I swapped out the void extrusion for a nested void component (more efficient) and added a parameter for your centres.

open up the file and have a look around.

 

Luke



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Mon, Jul 25, 2011 at 8:41:24 AM | Array Formula Problems

#5

cundall


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Joined: Wed, Apr 1, 2009
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5 Stars: 1 Votes


lab21 any chance you could make it in 2011 please i only have that version ?

is there any good tutorials out there aswell on array formulas ?

thanks for your time, much appreciated.

regards

Edited on: Mon, Jul 25, 2011 at 3:45:21 AM



Edited on: Mon, Jul 25, 2011 at 3:45:41 AM

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Mon, Jul 25, 2011 at 11:18:41 PM | Array Formula Problems

#6

lab21


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This time!

There's a  good tutorial here on RevitCity http://www.revitcity.com/tutorials/arrays_and_nested/ by Mr Spot. it's from a while back, but still good.



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Tue, Jul 26, 2011 at 7:30:54 AM | Array Formula Problems

#7

cundall


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Joined: Wed, Apr 1, 2009
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5 Stars: 1 Votes


cheers lab21 cant believe how easy youve made it look.

thanks alot


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