# Dimension Circle Radius **URL:** \ **Category:** Developers\ **Tags:** revit, python, geometry, dynamo\ **Created:** [May 11, 2022, 9:55am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422 "2022-05-11T09:55:11Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![bayowindapo](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/bayowindapo/32/184532_2.png) [@bayowindapo](https://forum.dynamobim.com/u/bayowindapo)\ **Post date:** [May 11, 2022, 9:55am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/1 "2022-05-11T09:55:11Z")
Hi All I am trying to create a radial dimension on a detail item in a view. I can’t seem to get the API method AngularDimension.Create to work. My Python code returns the error _“references should be at least two, non parallel and rays of the arc passed”_ so I am most likely not inputting the circle references the correct way. I tried following the tread at the link below. Thanks for your help. ```auto import clr import System clr.AddReference('ProtoGeometry') import Autodesk.DesignScript.Geometry as DSGeo from Autodesk.DesignScript.Geometry import * #import Revit API clr.AddReference('RevitAPI') import Autodesk from Autodesk.Revit.DB import * import Autodesk.Revit.DB as DB #import transactionManager and DocumentManager (RevitServices is specific to Dynamo) clr.AddReference('RevitServices') import RevitServices from RevitServices.Persistence import DocumentManager from RevitServices.Transactions import TransactionManager doc = DocumentManager.Instance.CurrentDBDocument uiapp = DocumentManager.Instance.CurrentUIApplication uidoc = uiapp.ActiveUIDocument app = uiapp.Application sdkNumber = int(app.VersionNumber) clr.AddReference("RevitNodes") import Revit clr.ImportExtensions(Revit.GeometryConversion) #INPUTS circleCurve = UnwrapElement(IN[0]) dimType = UnwrapElement(IN[1]) point = UnwrapElement(IN[2]) #CODE ref = Reference (circleCurve) activeView = doc.ActiveView arc = circleCurve.GeometryCurve arcCenter = arc.Center arcCenterRef = circleCurve.CenterPointReference refs = [ref,arcCenterRef] TransactionManager.Instance.EnsureInTransaction(doc) AngularDimension.Create(doc,activeView,arc,refs,dimType) TransactionManager.Instance.TransactionTaskDone() OUT = arcCenterRef,refArray ``` > [@Angular dimension node/code](https://forum.dynamobim.com/t/angular-dimension-node-code/15138): > > Hi, I am looking for a node (or code) that can create an angular dimension between two lines. Does such a node exist? (in any of the custom packages maybe?) ---
**Author:** ![c.poupin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/c.poupin/32/89152_2.png) [@c.poupin](https://forum.dynamobim.com/u/c.poupin)\ **Post date:** [May 11, 2022, 10:47am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/2 "2022-05-11T10:47:28Z")
Hello, the NewRadialDimension method is not available in a project document (API limitation) > **[NewRadialDimension Method](https://www.revitapidocs.com/2021.1/2106460f-a024-9987-5bc7-042d6a8ad50b.htm)** > > Online Documentation for Autodesk's Revit API: 2015, 2016, 2017, 2017.1, 2018 > **[How to create non-linear dimensions in project document](https://forums.autodesk.com/t5/revit-api-forum/how-to-create-non-linear-dimensions-in-project-document/m-p/8861851)** > > Hi everyone, This seems to be a basic function of Revit, but I have been searching it for a while and could not find the solution. The Revit help (link below) states NewDimension method can create a linear dimension only. ... ---
**Author:** ![bayowindapo](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/bayowindapo/32/184532_2.png) [@bayowindapo](https://forum.dynamobim.com/u/bayowindapo)\ **Post date:** [May 11, 2022, 11:05am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/3 "2022-05-11T11:05:31Z")
Ahh! I’ve been going around in circles all morning trying to figure it out. Thanks for the response. Surely it won’t be that difficult to expose this. Thanks again. ---
**Author:** ![SailishCephas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sailishcephas/32/175567_2.png) [@SailishCephas](https://forum.dynamobim.com/u/SailishCephas)\ **Post date:** [January 18, 2024, 9:31am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/4 "2024-01-18T09:31:22Z")
@bayowindapo Did you found out any methods for that. I am searching through, could not find any. Thanks ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [January 18, 2024, 10:27am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/5 "2024-01-18T10:27:04Z")
Hi i know it isnt radial dimension, but probably something here could work in some cases ![Skærmbillede 2024-01-18 112536](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/6/d64f53e94c05f6000ff7929b892596657a1c529d.png) ---
**Author:** ![SailishCephas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sailishcephas/32/175567_2.png) [@SailishCephas](https://forum.dynamobim.com/u/SailishCephas)\ **Post date:** [January 18, 2024, 10:54am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/6 "2024-01-18T10:54:40Z")
Thanks will look into that but was looking for Diameter Dimension. This is also helpful ---
**Author:** ![sovitek](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sovitek/32/116237_2.png) [@sovitek](https://forum.dynamobim.com/u/sovitek)\ **Post date:** [January 18, 2024, 10:57am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/7 "2024-01-18T10:57:46Z")
can easy work for diameter, just connect curves endpoints instead of circle center ---
**Author:** ![SailishCephas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sailishcephas/32/175567_2.png) [@SailishCephas](https://forum.dynamobim.com/u/SailishCephas)\ **Post date:** [January 18, 2024, 11:01am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/8 "2024-01-18T11:01:24Z")
ok thanks ---
**Author:** ![bayowindapo](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/bayowindapo/32/184532_2.png) [@bayowindapo](https://forum.dynamobim.com/u/bayowindapo)\ **Post date:** [January 22, 2024, 6:29am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/9 "2024-01-22T06:29:30Z")
Hello. I never did, unfortunately. ---
**Author:** ![SailishCephas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/sailishcephas/32/175567_2.png) [@SailishCephas](https://forum.dynamobim.com/u/SailishCephas)\ **Post date:** [January 22, 2024, 9:16am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/10 "2024-01-22T09:16:32Z")
ok @bayowindapo . @jacob.small can you throw your light on this ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [January 22, 2024, 9:28am UTC](https://forum.dynamobim.com/t/dimension-circle-radius/76422/11 "2024-01-22T09:28:52Z")
Not exposed in the API means it cannot really be done. The linear dimension shown here is the closest alternative and the root I would go. > [@Dimension Circle Radius](https://forum.dynamobim.com/t/dimension-circle-radius/76422/5): > > Hi i know it isnt radial dimension, but probably something here could work in some cases