Could anyone explain what is shared parameter?
How to create that .txt file using in shared parameter
Kindly explain with images
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Have you taken a look through WikiHelp? Follow this link - WikiHelp: Shared Parameters
It should help quite a lot. If you hit any snags or have any confusion, just let us know.
The shared parameters file is like a bridge to pass data as parameters, between multiple families or projects, data that can be displayed in tags, and listed in schedules.
To beging creating your shared parameters file, use Manage > Projects > Shared parameters, and use the Create button.
For all the detailed info, refer to the Wikipedia article listed above. I hope this image helps:
If you are new to shared Parameters (SP) it can be hard to get your head around it theoretically.
I suggest you make set up a test environment with a copy of your standard template and a copy of the SP file you are pointing Revit to. Point your test template to the test SP.
The start to create simple families e..g a cube with SP for width and height (for flexing the cube) for example.
Then find these SP you used in the SP settings in Revit (manage/shared parameters see image) to get an understanding of where the SP is coming from when you change the properties of the width and height of the cube once placed in a project.
Also look at the SP txt file to find the width and height just to visually confirm the relationship it has with Revit.
Analyze a standard door. Create a door schedule and back track the SP on everything you decide to schedule.
I would suggest that you stick to the default Autodesk SP file in the beginning until you are sure of what your office requires and how to create new SP that will make sense and work in the long run.
Get your hands dirty.
All the people that answered to your question here are right.....
I'll show you an example that I made for an young architect in order to understand what is shared parameter good for.
Suppose you want to make a piese of furniture ( call it box), then you need to insert it into your project and there to make a schedule which controls not only the number of furniture pieces (as the Type and Instance allow ) but also their dimensions , areas per unit and per total, volume....If you want this you have to use Shared Parameters.