For some reason I can’t quite find the answer I’m looking for on this. Other posts seem to address this, but they do not function for my case. All I need is to process a list of lists to sort by their indices (For n-number of Lists containing n-number of lists, sort by indices of said lists). I’ve tried All Indices Of, List Map and List Transpose, List Slice, Sort, Sort By Index, etc and I get empty lists, nulls, the same list over and over. Is there a really simple way to do this that I’m just totally missing here? I’m trying to work without Packages in Sandbox mode. [image]

If all you need to do is group points to create quads, and assuming you are creating points on a surface which yields a 2D array, here’s one way of doing it: [image] Create a list 4 points Revit [image] Sorry for my english is not good. I have created a list of points. Now in I want from the list that filter out the list as shown in Figure 4 points closer together. Adaptive purpose to load family.

Assuming you are sorting lists of points, what are you trying to sort them by? Distance from origins? Z values? X values? Y values? Some combination of all the above?

I’m trying to group points by their list index. I.e. group points that appear in list 0: sub-list 0 with list 1: sub-list 0 and so on. Then do the same for items at index 1 etc.

Try List.Transpose with lacing set to longest.

I did. This does not group the indexes as desired. In the end I’m hoping to arrive at a solution for panelizing a surface by points and grouping them together like the lunchbox node. The goal is to use the sandbox so that it would be more readily translated into Dynamo Studio and then possibly used in Formit. Hopefully that helps to illustrate the path I’m taking here. Any other suggestions?

Do you mean flatten but at a specified depth (aka rank)? So if you have a list of lists of lists for example, get all the lists from a certain index (rank) and flatten them into a new sublist at that index (which one could describe as ‘grouping’ I suppose)? Is that what you mean? Maybe create a clear and concise diagram to explain as you haven’t defined your problem very clearly.

See the definition I’m working with below. What I was getting at in my previous posts: I’m attempting to group surface points into quads to create panels in Dynamo Sandbox (without packages). I’ve got so far as to get groups of the first two points that make up the panels. The problem is that I need to sort the list of lists by their index. This is what prompted my initial post. I haven’t found a way to organize a list by index. If I could, I was thinking I could then generate a list of four points that I could then create surface patches or what ever else from. Does that make more sense? Thanks .2017_0627_Sandbox_Surface_v1.3.dyn (36.6 KB)

Try using Clockwork’s “List.SortListOfLists” node.

Thanks. Though, like I said, I’m trying to work without packages so that there is the ability to translate to Dynamo Studio and Formit.

Not quite what I’m trying to do. See my definition I uploaded. I’m trying to arrive at a group of four points to use for creating a panel on a surface. Getting one index of the list is no problem. It’s getting all successive indices as well. Also, the sort by keys does not appear to function for just index marks…only values at that index from what I can tell. I could be wrong. Thanks.

Sort Indices of Sublists

Uncategorized

Thomas_Mahon June 27, 2017, 7:09pm 12

If all you need to do is group points to create quads, and assuming you are creating points on a surface which yields a 2D array, here’s one way of doing it:

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Sort Indices of Sublists

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