Forums >> Revit Building >> Technical Support >> Visibility Parameters

NKramer

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Joined: Tue, Oct 9, 2007
285 Posts

How do you link the visibility of a group (inside of a familty) to a Yes/No parameter. I thought that I had the correct formula but Revit doesnt seem to like it.

I would like to be able to turn the Student and faculty Desks off and on per instance.

Also is teher a general setting for the default number of backups or is that a per file setting? 

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IDN101

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Joined: Tue, Oct 31, 2006
127 Posts

Can I ask: Are you comfortable with using the Family Editor and creating your own components?

 If so....

 You need to set up a parameter, of the type Yes/No.

You then can control the visibility by using a Formula. I "think" it's something like "If Visibility=1" or something like that, entered into the Formular box of the setting you wish to control.

Regards,

Ian

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NKramer

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Joined: Tue, Oct 9, 2007
285 Posts

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malfonsi

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Joined: Tue, Feb 28, 2006
20 Posts

I have been trying to control visibility within a family too, and I just figured it out.

 1) The object that needs to be visibly controlled within the family needs to be created as its own family and inserted as a component. Make sure under the "Settings" pulldown menu, select "Family Category and Parameters" and check the box next to the "Shared" Parameter.

2) Insert the object as a component in your family.

3) Open your "Family Types" window and pick the "Add" button under the "Parameters" heading.

4) Select the following in the "Parameter Properties" dialog box. a) "Family parameter" b) Under "Discipline:" select "Common" c) Under "Type:" select "Yes/No" d) Check the dot next to "Instance" e) Add a name unde "Name:" of your choice f) Select a "Group parameter Under:" to your preference.

5) Select "OK" when done with this.

6) Select the object you want to controll the visibility of and pick properties.

7) In the "Element Properties" dialog box, under the "Graphics" heading and at the right end of "Visible" select the little blank button.

The "Associate Family Parameter" box appears. Now select the parameter the you just made and select "OK" and hit "OK" again in the "Element Properties" box.

 I can not open your file because I am in Revit 9.1, but I hope this helps.

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NKramer

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Joined: Tue, Oct 9, 2007
285 Posts

Actually this is a rather old post. I have since figured out the yes/ no parameter formulas. I dont remember what the exact problem is but I believe that it had something to do with adding the "if" and figuring out the arguments.

Basically if I want to use the output of a yes/ no paramenter then the formula is something like this if(Locks,"A","B" as opposed to the output of a integer parapmeter if(Locks=1,"A","B". And if you want to use a formula to define a yes/ no paramenter then its something along the lines of Locks=1 for integer parameters or not(Locks) for yes/ no parameters.

I keep trying to go back to excel formulas and that doesnt quite work. I think that I have most of Revit's formula quicks figured; let me know if you get stuck or need help.

As a side note  malfonsi is correct in that you cannot control the visibility (or much else) of an entire group , instead each component of the group must be selected through the group edit dialogue.

Thanks,

Nick 

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