hi, I am a GH user, now I am a new player of Dynamo :), my problem is that how I can add two groups of list by longest rule in dynamo getting the result as it in GH I showed in the left picture. [微信截图_20210830142511]

:roll_eyes: [image] t1 = [9, 9, 99, 9, 6, 7, 8]; t9 = DSCore.List.Chop(t1, 3); a = t9; t2 = Get.ValueAtIndex(a, 0); t4 = [3, 2]; t10 = DSCore.List.OfRepeatedItem(t4, 3); a1 = t10; t3 = Get.ValueAtIndex(a1, 0); t11 = t2<1L> + t3<1L>; a2 = t9; t5 = Get.ValueAtIndex(a2, 1); a3 = t10; t6 = Get.ValueA…

Basic list operation longest lace

Revit

bvs1982 August 30, 2021, 8:30am 6

Ah, i see what you mean now. What you want can be done. I guess the easiest way is with DesignScript, but that is not my cup of tea. It probably can be done without DesignScript but that kinda depends on a few things.

Maybe this get you started.

Sum of two lists with different length - #2 by salvatoredragotta
Make all List Equal Length - #7 by Jimmy_G

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Basic list operation longest lace

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