Im trying to filter out intersecting geometry into a list without duplicates.
When i create a list of intersecting geometry it makes ‘human readable’ sense but i cant manipulate the lists properly. I know that {0,0] is circle 0 intersecting itself and {0,1} is circle 0 intersecting circle 1 but the geometry created by [0,1] and {1,0} is the same - how can i remove duplicates?
You need to Repeat, then shift the list, and drop an item. If you notice the list coming out of List.DropItems the first list does not contain 1 the second list does not contain 2 and so on.
The most appropriate solution kind of depends on what you’re looking to accomplish, I think? Do you just want no overlapping surfaces, only the intersecting bits (once), the intersections trimmed out of the originals, or something else?
@GregX sadly no, List.UniqueItems does not work for surfaces Geometry.IsAlmostEqualTo works reasonably well, though.
I tested it because I was curious and wondered if with some information, such as PerimeterCurves I could trick dynamo into using list.uniqueItems, but I had to end up doing this horrible script just for fun:
Thanks all - i would never have thought of some of that lot - there is plenty there for me to think about!
What i am actually trying to achieve is to create surfaces representing areas served by a thing at their center point. When an item is placed on an intersection surface it has a choice of which center point it is associated with.
