Select an element and create a group of all other elements with same material

[stephen.donahay]

Does anyone have an example of creating a group by selecting an element (actually a nested family object) in a view and all others with the same material will be included? I need to group my top level family into groups by material. So as seen below if i select one of the green nested families i want it grouped with all the other green nested families. Group can have same name as material.

What i have that does nothing but produce and error.

Searched but nothing comes up.
Shared nested families yes.
This is a SolidWorks assembly exported via BIMDeX as a nested family. Each item is a family one level down from top assembly.

[stephen.donahay]

Don’t know how to look at errors.

[Marcel_Rijsmus]

run it in dynamo, not the player, then look for yellow nodes, hover over the triangle above it

[stephen.donahay]

[Marcel_Rijsmus]

a node is hidden…

[stephen.donahay]

[Marcel_Rijsmus]

use group by key

[stephen.donahay]

[Marcel_Rijsmus]

try lacing longest on the yellow node
btw, this view, does it have overrides? it does not look as if it is Revit default

[stephen.donahay]

You lost me on Lacing Longest.

It’s the 3d view in family editor.

Back to this tomorrow. Thanks for the help so far Marcel.

[Steven]

Is this what you are looking for?

[stephen.donahay]

Yes but I’m getting errors with your mods. Any clues as to why? I am dealing with nested families. I can only find List.Flatten not Flatten.

[Steven]

Flatten after ==. Look and the list I posted and the one in your graph. Yours is a list of lists and mine is a flat list. That should do it for you.

[Steven]

Group by key is not working because your list lengths do not match but I am not sure you need to do that for what you are doing.

Sorry I am on my phone and cannot do more right now.

[stephen.donahay]

Updated but still having errors

[Steven]

What is the Group.FromElements error? Can you create a group of nested family object? Have you tried this manually? Sorry from what I can see this should work.

[stephen.donahay]

Manual grouping works fine.