Dynamo Understanding the List Numbering System by Jason Boehning Lists are very important and helpful in Dynamo because they can help you perform tasks quickly by providing multiple inputs. In order to use lists effectively, you must understand the list numbering system. Watch Video here list is index0. This is typical for programming language, but not necessarily how most people think. Continuing on, the second item in a list is index1. Essentially, you can add one to the index to get the item entry number in the list. In this exercise fi le, nodes have been placed to create four points. Two lists have also been created to create four lines. The two lists were created with List.Create nodes. The inputs into these nodes are points. When you hover the cursor over the output indicator of one of the List.Create nodes, the tooltip states Array. When you select the output indicator, the list is shown. A list is made up of multiple items. The items in this list are points. Each item is indicated by the index number in square brackets. You can collapse and expand the List as needed. The most important thing to understand with the list numbering system is that the fi rst item in the Additionally, you can right-click the List.Create node and select Show Labels. This will label the items in the background 3D preview based on the list index. In this case, the points are labeled since they are the items in the list. Once again, lists can speed up your workfl ow by providing multiple inputs. This graph uses two lists www.cadlearning.com 15