Does anybody have a straightforward way of mapping ‘element types’ back into ‘elements’?
you have it… all the elements is what is listed in the “out” port from the previous node!
No. An instance has only one type but a type may have many instances. One-to-one mapping is logically impossible. You can only get all of the instances of every type.
Not true, if you have the elements then you can use elementType as a filter… combine it with groupby and you have the elements from a type.
The nodes for FamilyName is some new nodes I released the other day…