topic Re: How to define a parameter for visibility of one object in an array family in Revit Architecture Forum

How to define a parameter for visibility of one object in an array family

ivy_moghaddam — Thu, 26 Sep 2024 05:24:11 GMT

Hi all,

I have created a family of arrays. this array is a stair that has the parameters of number and height , and based on the height of stair the height of steps and number of them change. I want to add a parameter to the last step. Is there any way to define a parameter for just one of the objects in an array group?

I have created a family of arrays representing a step ladder. This array is based on three parameters: the number of steps, Step Height and the overall height. The height and quantity of the steps adjust according to the total height of the staircase. Now, I want to add a visibility parameter specifically for the last step. Is there a way to define a parameter that applies to only one object within an array group?"

Re: How to define a parameter for visibility of one object in an array family

SteveKStafford — Thu, 26 Sep 2024 07:10:10 GMT

As you've probably found, assigning a visibility parameter to one member of the group array affects all of them. I suggest you build the array so that you array all but the last one, leaving that one as a separate element to toggle on or off apart from the array logic.

Your array should probably be built with the "last" option for grouping so you can control where the last member is located more easily. Then place the separate actual last member and control it from the end of the array.

Re: How to define a parameter for visibility of one object in an array family

azad.Nanva — Thu, 26 Sep 2024 09:01:56 GMT

you got the solution as @SteveKStafford said.

something like this ,so simple:

(view in My Videos)

Re: How to define a parameter for visibility of one object in an array family

ivy_moghaddam — Thu, 26 Sep 2024 21:51:41 GMT

Hi Steve,

Thank you for your answer. Unfortunately, I cant change the number of steps as the height of steps changes based on the number of steps and total Height.

I could not understand the last part of your answer about "last" option. Do you mean a yes or no parameter that affects the number of steps?

Re: How to define a parameter for visibility of one object in an array family

SteveKStafford — Thu, 26 Sep 2024 22:46:32 GMT

The top riser/tread would be a fixed element that your array spans from the base up to reach. The "last" option is one of two options for creating an array. The first option is 2nd which describes the array from 1st to 2nd element and the "last" option describes an array between the 1st and last element. These means you constrain the array from the base to just below the last riser/tread assembly. You can use constraints and parameters to move the top riser up/down and away from the beginning based on the same dimensional logic that would drive your stair is it was all done with just the array. Keeping the top riser/tread separate means you can opt to show it or not depending on the situation.

Re: How to define a parameter for visibility of one object in an array family

ivy_moghaddam — Thu, 26 Sep 2024 22:48:18 GMT

Hi Azad,

Thank you for your response. Is the number of seats in the video managed using an array? Also, is the single seat part of that array, or is it controlled separately through a visibility parameter?