Set Parameter by Name, how?

Developers
1

Hello,

i just want to set my collected values to a parameter… BUT i lost my way :wink:

import clr

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Structure import *

clr.AddReference('RevitAPIUI')
from Autodesk.Revit.UI import *

clr.AddReference('System')
from System.Collections.Generic import List

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.ImportExtensions(Revit.Elements)

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

doc = DocumentManager.Instance.CurrentDBDocument
uidoc=DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument

collector = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Rooms)
rooms = collector.WhereElementIsNotElementType().ToElements()
t = Transaction(doc, "Set SpaceNumber")

def SetParameterByName(Element,ParameterName,Value):
	rooms.LookupParameter(ParameterName).Set(Value)
	
t.Start()

param_c=[]

for i in rooms:
	p = str(i.LookupParameter("Bauteil").AsString())
	q = str(i.LookupParameter("Geschoss").AsString())
	r = str(i.LookupParameter("Top").AsString())
	a = "M03" + p + q + r
	#param_c.append(a)
		
for r in UnwrapElement(rooms):
	param_c.append(r.SetParameterByName(r,"SpaceNumber",a))
	
t.Commit()	

OUT = param_c

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in Dynamo it is a easy task, but how do i this here…

KR

Andreas

2

If you’re going to use the Dynamo method you have to provide Dynamo objects. You’re currently providing Revit objects. The alternative is to use the Revit API to set the parameter values.

1 Like
3

@Nick_Boyts ,

at least i got no warning

BUT it remains empty, final aim is to set the compined strings

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KR

Andreas

4

Why are you using two for loops?

Try this:


# Retrieve all rooms in the document
rooms_collector = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Rooms).WhereElementIsNotElementType()
rooms = list(rooms_collector)

# Start a transaction to modify the parameter
transaction = Transaction(doc, "Set SpaceNumber Parameter")
transaction.Start()

for room in rooms:
    # Check if the parameter exists in the room
    space_number_param = room.LookupParameter("SpaceNumber")
    if space_number_param:
        # Retrieve the values of other parameters
        bauteil_param = room.LookupParameter("Bauteil").AsString()
        geschoss_param = room.LookupParameter("Geschoss").AsString()
        top_param = room.LookupParameter("Top").AsString()

        # Construct the value for SpaceNumber parameter
        space_number_value = "M03" + bauteil_param + geschoss_param + top_param

        # Set the new value for the SpaceNumber parameter
        space_number_param.Set(space_number_value)

# Commit the transaction
transaction.Commit()
2 Likes
5

@gerhard.p ,

i understand i use the variable first get the parameter
and the same variable to set the parameter

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via my collection

ok it works … for any reason i have to use str(

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1 Like
6

This is 100% ChatGPT code^^
I use it for everything I’m coding and making much more progress since I do because:

  • I can ask for every single step why it is coded like that and i get detailed explainations

  • I can ask to code some parts in a different way

  • I can ask to add or remove things.

  • the naming of variables is better as if I did it myself

And so on.
Give it a try

1 Like