Mullion.SortByDirection
Dynamo Hierarchy: Rhythm>Revit>Elements>Mullion>Mullion.SortByDirection
Description:
This will sort mullions of a host curtain wall by the direction they are facing.
Inputs:
hostingElement : Wall
Outputs:
Horizontal : Element
Vertical : Element
Dynamo Nodes 
What happened to this node. Can’t find it anywhere.
That node was retired. You can pull the internals of the node out of an old version of the package.
Ok, I will give that a try.
I’m a little curious as to way this node was retired? Is there a better way of selecting only vertical mullions that you can suggest?
Thanks for the response.
The node was retired since Dynamo 2.0 was released. With Dynamo 2.0 comes a fundamental file format change that makes anything that is a DYF or DYN (the filetypes that Dynamo uses) not backward compatible. This forced me to choose between two options. Option 1: Have 2 versions of Rhythm for each major version of Dynamo, eg. “Rhythm for Dynamo 1.x” and “Rhythm for Dynamo 2.x”. Option2: Continue my long term goals of migrating Rhythm to be fully “Zero Touch” c# code. I went with option 2 as it provides a more stable product and further compatibility. That being said, if that node is that important to you I can add it to a future Rhythm release. Please add an issue on GitHub if you would like to see this added back as a C# version. https://github.com/johnpierson/RhythmForDynamo/issues
Thanks for your reply.
This is a very useful node to have so I will add this to your GitHub page.
Thanks