Create a collection of item ids Revit API in Python

Question

So I am trying to use a list of input strings to isolate them in a view using Revit API. I got this far, but I am getting stuck where I am trying to create a set that takes all elements in a view and removes ones that are created from input IDs. I am doing this to end up with a set of all elements except ones that i want to isolate.

dataEnteringNode = IN0
view = IN0
str_ids = IN1
doc = __doc__
collector = FilteredElementCollector(doc, view.Id)

for i in str_ids:
    int_id = int(i)
    id = ElementId(int_id)
    element = doc.GetElement(id)
    element_set = ElementSet()
    element_set.Insert(element)

elements_to_hide = collector.WhereElementIsNotElementType().Excluding(element_set).ToElements()

#Assign your output to the OUT variable
OUT = elements_to_hide

I would greatly appreciate a help in solving this error. I am getting that "expected ICollection[ElementId], got set". I am guessing the problem lies in a Excluding filter where i need to create a collection of Ids to exclude but I dont know how. Thank you in advance. Thank you for help in advance!

Which line caused the error? And I think element_set should be declared outside the loop, not inside. — Jeff Hardy
– Jeff Hardy, Commented May 26, 2014 at 7:34

Daren Thomas · Accepted Answer · 2014-05-26 09:19:09Z

4

The reason your code doesn't work is that ElementSet in the Revit API does not implement the ICollection<T> interface - just the IEnumerable<T>. So, to get your code working, you will need to create an ICollection<T> object from your set.

Try something like this:

# ...
from System.Collections.Generic import List
element_collection = List[ElementId](element_set)
elements_to_hide = collector.WhereElementIsNotElementType().Excluding(element_collection).ToElements()

answered May 26, 2014 at 9:19

Daren Thomas

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