Hello, Is there any way to get all categories existing and used in a Document list, not only the current opened project file, whithout getting elements list first?

@ruben.romero You can try something like this with the GetElementCount Method [image] import clr clr.AddReference('RevitAPI') from Autodesk.Revit.DB import * clr.AddReference("RevitNodes") import Revit clr.AddReference("RevitServices") from RevitServices.Persistence import DocumentManager doc …

[image] AmolShah: GetElementCount Method It is fine but I am looking to do the same from a list of Revit Document files, not only the current opened Revit file

Orchid also have the node “Category.InDocument”

[image] _Vijay: “Category.InDocument” I am looking Category in Document"s"

Do you mean multiple documents?

yes, that is right, I can do it for one document but I want for multiple with python code

All documents have the same inbuild Category right.

no, this is what I want to know ultimately

Then you’ll have to loop your code for a list of documents.

Get all categories used in a Document list

Packages

Nick_Boyts June 9, 2021, 5:03pm 2

I don’t think you can get the used Categories without checking elements, but you can certainly get all project Categories. Take a look at this thread and see if it gets you started.

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Get all categories used in a Document list

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