Nearest level from elevation


Small question: I want to have this function:

elevation = 1000
lvl = Level.GetNearestLevelId(doc, elevation)

How do I call this function as it is a member of Level, but I need to specify this level first. The fact that this function is a member of Level is quite odd, as it feels it should be a member of document and return the Level.

How does one get the level closest to a certain elevation?

Cheers! Rick

Hi @Rickkrrd,

Your code snippet should work.
In Level.GetNearestLevelId, Level is the Autodesk.Revit.DB.Level class not a specific level element.

For information, the Nearest Level node already exists in the Genius Loci package.

1 Like

Hi @Alban_de_Chasteigner,

Yes I thought so as well, but I’m keep getting:

AttributeError: ‘type’ object has no attribute ‘GetNearestLevelId’

This happens also with your Nearest Level function. And it also gives an error:

NameError: name ‘SpecTypeId’ is not defined

Seems to me like something goes wrong in importing libraries… But I’m using RevitAPI much more and that works fine :thinking: Any thougths on what is going wrong?

I need to use the RevitAPI as I’m developing add-ins. Never really had a problem like this before :slight_smile:

Did you see that this method is only available in Revit 2022 ?
For previous Revit versions, this doesn’t exist.


Ah shoot yes I saw that :slight_smile:

So this is the source code of the Nearest Level node, without the SpecTypId. Still getting the AttributeError: ‘type’ object has no attribute ‘GetNearestLevelId’ error.

import clr
# Import RevitAPI Classes
import Autodesk
from Autodesk.Revit.DB import *
# Import DocumentManager and TransactionManager
import RevitServices
from RevitServices.Persistence import DocumentManager

doc = DocumentManager.Instance.CurrentDBDocument
numbers = IN[0] if isinstance(IN[0],list) else [IN[0]]

for number in numbers:
if isinstance(IN[0], list): OUT = result
else: OUT = result[0]

seems to me this should just work fine. DB is properly working, as I can use it in other functions.

Ah shoot.

GetNearestLevelId is a R2022 feature as well.