# \#list

**URL:** https://discourse.mcneel.com/tag/list/598.md

[Latest](https://discourse.mcneel.com/latest.md) · [Categories](https://discourse.mcneel.com/categories.md) · [Tags](https://discourse.mcneel.com/tags.md)

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## [Combine PATHS with VALUES](https://discourse.mcneel.com/t/combine-paths-with-values/223073)

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**Author:** [@Simon36](https://discourse.mcneel.com/u/Simon36)\
**Replies:** 4\
**Last updated:** [September 28, 2026, 1:32pm UTC](https://discourse.mcneel.com/t/combine-paths-with-values/223073 "2026-09-28T13:32:06Z")

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i am about to crash out. how do i make it so that i get another list with the left panel being the PATHS and the right one being the VALUES inside the paths. they already have the right order (same indices). i tried Repl…

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## [Merging data problem](https://discourse.mcneel.com/t/merging-data-problem/208372)

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**Author:** [@FraBene](https://discourse.mcneel.com/u/FraBene)\
**Replies:** 3\
**Last updated:** [August 12, 2025, 11:11am UTC](https://discourse.mcneel.com/t/merging-data-problem/208372 "2025-08-12T11:11:52Z")

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Hi everyone I’m stuck in this script I’m trying to join these points while maintaining an order that allows me to create a closed polyline. I think my problem is in the correct use of merge or entwine. i know i got to …

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## [Weaving Pattern Simple](https://discourse.mcneel.com/t/weaving-pattern-simple/103708)

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**Author:** [@lmajer](https://discourse.mcneel.com/u/lmajer)\
**Replies:** 9\
**Last updated:** [July 10, 2025, 6:44pm UTC](https://discourse.mcneel.com/t/weaving-pattern-simple/103708 "2025-07-10T18:44:37Z")

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Hi there, this is a simple way to create a weaving pattern without any plugins only using lists in Grasshopper. The weaving pattern is modeled by constructing points and evaluating them from the built surface. First, …

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## [Split list of coordinates into several branches](https://discourse.mcneel.com/t/split-list-of-coordinates-into-several-branches/51853)

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**Author:** [@clement.loyer2](https://discourse.mcneel.com/u/clement.loyer2)\
**Replies:** 18\
**Last updated:** [June 21, 2025, 11:28am UTC](https://discourse.mcneel.com/t/split-list-of-coordinates-into-several-branches/51853 "2025-06-21T11:28:08Z")

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Hello, wan I’m trying to split a list into several (and regular) branches, solutions found on the forum apparently doesn’t work, probably because this list is coordinates.. So I’m trying to divide those coordinates in…

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## [Random divide branch lists with a gap](https://discourse.mcneel.com/t/random-divide-branch-lists-with-a-gap/200730)

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**Author:** [@julien2](https://discourse.mcneel.com/u/julien2)\
**Replies:** 10\
**Last updated:** [June 19, 2025, 2:52pm UTC](https://discourse.mcneel.com/t/random-divide-branch-lists-with-a-gap/200730 "2025-06-19T14:52:25Z")

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Hi, I’m working on a laser cutting pattern based on this method : https://www.youtube.com/watch?v=22pfvA0kiOU Basically what i’m trying to acheive is after getting each line in a branch is to randomly divide it so that…

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## [Insert optional items to list - by condition](https://discourse.mcneel.com/t/insert-optional-items-to-list-by-condition/206044)

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**Author:** [@Tom\_P](https://discourse.mcneel.com/u/Tom_P)\
**Replies:** 19\
**Last updated:** [June 17, 2025, 10:48pm UTC](https://discourse.mcneel.com/t/insert-optional-items-to-list-by-condition/206044 "2025-06-17T22:48:09Z")

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I hate juggling with lists and trees in Grasshopper :nerd: Most times I think code is written faster and is easier to understand. Here is a challenge a student came up with: it seems super easy (at least to me) as cod…

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## [How to create some diagonal lines in a geodesic structure?](https://discourse.mcneel.com/t/how-to-create-some-diagonal-lines-in-a-geodesic-structure/203996)

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**Author:** [@vin.iab](https://discourse.mcneel.com/u/vin.iab)\
**Replies:** 8\
**Last updated:** [May 4, 2025, 3:05am UTC](https://discourse.mcneel.com/t/how-to-create-some-diagonal-lines-in-a-geodesic-structure/203996 "2025-05-04T03:05:12Z")

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Hello, I am trying to create a sort of geodesic structure for a Nautilus shell. I would like to know how to create this type of curve (diagonally) to implement a triangulation. Imagine a u,v grid, the diagonal curve…

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## [Color Management: no custom list?](https://discourse.mcneel.com/t/color-management-no-custom-list/181606)

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**Author:** [@Pipouille](https://discourse.mcneel.com/u/Pipouille)\
**Replies:** 16\
**Last updated:** [April 22, 2025, 6:59am UTC](https://discourse.mcneel.com/t/color-management-no-custom-list/181606 "2025-04-22T06:59:08Z")

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Hello, Is there a way to create a custom colour list? There’s a tab when you change colours but it doesn’t seem to work?

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## [Trying to segment an array of circles respectively](https://discourse.mcneel.com/t/trying-to-segment-an-array-of-circles-respectively/202665)

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**Author:** [@Efe\_Batuhan\_Halici](https://discourse.mcneel.com/u/Efe_Batuhan_Halici)\
**Replies:** 2\
**Last updated:** [April 7, 2025, 2:07pm UTC](https://discourse.mcneel.com/t/trying-to-segment-an-array-of-circles-respectively/202665 "2025-04-07T14:07:41Z")

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I have a bunch of circles with centers on a linear array, on a surface. I want to segment these circles, into 4. I have been able to come to the point where I have the points defined I want to connect. I cant find a …

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## [Component use one list item at a time](https://discourse.mcneel.com/t/component-use-one-list-item-at-a-time/200781)

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**Author:** [@Torgeir\_Kjevik](https://discourse.mcneel.com/u/Torgeir_Kjevik)\
**Replies:** 5\
**Last updated:** [March 6, 2025, 9:01am UTC](https://discourse.mcneel.com/t/component-use-one-list-item-at-a-time/200781 "2025-03-06T09:01:27Z")

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Hi! I am quite new to Grasshopper, and it feels like this issue should be easily resolved. I am using the Shatter component to redefine a curve’s starting point to be a random point along the curve.This works well for …

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## [Merge the sub-indices in grasshopper](https://discourse.mcneel.com/t/merge-the-sub-indices-in-grasshopper/199649)

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**Author:** [@afroz2\_Pro](https://discourse.mcneel.com/u/afroz2_Pro)\
**Replies:** 9\
**Last updated:** [February 17, 2025, 3:37pm UTC](https://discourse.mcneel.com/t/merge-the-sub-indices-in-grasshopper/199649 "2025-02-17T15:37:09Z")

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I have a list starting at index 1 and i want to merge the {i,j} index into just {i} by combing all the sublist into one line as shown in below snip. grasshopper list also attached. Also I want to bring and attach the fi…

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## [Replace one item with two items](https://discourse.mcneel.com/t/replace-one-item-with-two-items/198323)

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**Author:** [@Johh](https://discourse.mcneel.com/u/Johh)\
**Replies:** 4\
**Last updated:** [January 23, 2025, 5:17pm UTC](https://discourse.mcneel.com/t/replace-one-item-with-two-items/198323 "2025-01-23T17:17:11Z")

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Hi! Thanks in advance :slight\_smile: I’m trying to receive certain items in a tree and adding them to a new tree by using Tree item. It works fine as long as there is only one item to search for. When there are mult…

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## [Adding items by branch from a list to another list](https://discourse.mcneel.com/t/adding-items-by-branch-from-a-list-to-another-list/197817)

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**Author:** [@Daniel\_M\_Araujo](https://discourse.mcneel.com/u/Daniel_M_Araujo)\
**Replies:** 13\
**Last updated:** [January 17, 2025, 8:50am UTC](https://discourse.mcneel.com/t/adding-items-by-branch-from-a-list-to-another-list/197817 "2025-01-17T08:50:46Z")

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Hi everyone, I’m trying to put all items from a list to another list, but each one inserted by branch, like that: I’ve already tried some List components but with no success. Thanks in advance :slight\_smile:

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## [Multiple list management, search and find the item in Grasshopper](https://discourse.mcneel.com/t/multiple-list-management-search-and-find-the-item-in-grasshopper/196969)

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**Author:** [@afroz2\_Pro](https://discourse.mcneel.com/u/afroz2_Pro)\
**Replies:** 4\
**Last updated:** [December 27, 2024, 2:22pm UTC](https://discourse.mcneel.com/t/multiple-list-management-search-and-find-the-item-in-grasshopper/196969 "2024-12-27T14:22:05Z")

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LIST-1 - Contains name of Structure ID (dynamic list) LIST-2 - Contains name of Structure ID & its size ID (dynamic list) LIST-3 - size ID and its Diameter (dynamic list) Need to search the Diameter from LIST-3 a…

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## [Re-order randomized list to the x-direction](https://discourse.mcneel.com/t/re-order-randomized-list-to-the-x-direction/196336)

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**Author:** [@Daniel\_M\_Araujo](https://discourse.mcneel.com/u/Daniel_M_Araujo)\
**Replies:** 2\
**Last updated:** [December 10, 2024, 9:32pm UTC](https://discourse.mcneel.com/t/re-order-randomized-list-to-the-x-direction/196336 "2024-12-10T21:32:11Z")

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Hi everyone, I’m trying to number the bricks of a wall in the x direction, like this: However, I don’t know why the current list looks like randomized, so I can’t just flip the matrix or use the “Partition List” com…

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## [Sort a list with negative values](https://discourse.mcneel.com/t/sort-a-list-with-negative-values/193941)

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**Author:** [@Vu13](https://discourse.mcneel.com/u/Vu13)\
**Replies:** 2\
**Last updated:** [October 29, 2024, 12:04pm UTC](https://discourse.mcneel.com/t/sort-a-list-with-negative-values/193941 "2024-10-29T12:04:46Z")

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Hello, I am trying to sort a list including negative values but sort component gave me a result below, in which negative values are placed in last place… So I tried another method dividing the original list into two…

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## [Different reactions between line and polyline when using list item input](https://discourse.mcneel.com/t/different-reactions-between-line-and-polyline-when-using-list-item-input/193433)

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**Author:** [@Eef\_Weenink](https://discourse.mcneel.com/u/Eef_Weenink)\
**Replies:** 3\
**Last updated:** [October 21, 2024, 10:03am UTC](https://discourse.mcneel.com/t/different-reactions-between-line-and-polyline-when-using-list-item-input/193433 "2024-10-21T10:03:56Z")

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Probably simple, but hard to find/understand why there is this difference. I have a list of points and with “list item” + index use a part of them to create polyline. Works fine I do the same to make a line, Error. No…

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## [Sort A list of Lines to match a List of underlying Surfaces](https://discourse.mcneel.com/t/sort-a-list-of-lines-to-match-a-list-of-underlying-surfaces/190512)

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**Author:** [@Erik10](https://discourse.mcneel.com/u/Erik10)\
**Replies:** 6\
**Last updated:** [September 2, 2024, 12:35pm UTC](https://discourse.mcneel.com/t/sort-a-list-of-lines-to-match-a-list-of-underlying-surfaces/190512 "2024-09-02T12:35:02Z")

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Hello everyone. Preview: I am trying to modell and design a Zollinger Rooftop for my Master Thesis. One thing i got wrong is the orientation of the Lamella (Lines). They are Sorted from a Projekt someone before me did. …

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## [Lists into branches](https://discourse.mcneel.com/t/lists-into-branches/185128)

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**Author:** [@wesleyshe623](https://discourse.mcneel.com/u/wesleyshe623)\
**Replies:** 1\
**Last updated:** [June 25, 2024, 7:59am UTC](https://discourse.mcneel.com/t/lists-into-branches/185128 "2024-06-25T07:59:27Z")

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Hey everyone! I have a question regarding trees. I have x number of lists (in this case 3) that I would like to arrange in a particular order to a tree of y branches (in this case 28). At the moment I am using intert…

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## [\[Need Assistent\] - Parallel Sorting 2 Lists](https://discourse.mcneel.com/t/need-assistent-parallel-sorting-2-lists/179783)

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**Author:** [@\_Rhino\_User](https://discourse.mcneel.com/u/_Rhino_User)\
**Replies:** 10\
**Last updated:** [April 11, 2024, 8:49am UTC](https://discourse.mcneel.com/t/need-assistent-parallel-sorting-2-lists/179783 "2024-04-11T08:49:33Z")

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Hallo, I need help at sorting my Data. In the Screenshot u can see 2 Panels. Panel “Brep 1-25”: are all imported Breps from Rhino, in this example A-Z, in real they all have only the same Name “Referenced Brep” In P…

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## [Not sure when to use List types and getting empty output sections](https://discourse.mcneel.com/t/not-sure-when-to-use-list-types-and-getting-empty-output-sections/179233)

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**Author:** [@Joshua\_Marris](https://discourse.mcneel.com/u/Joshua_Marris)\
**Replies:** 0\
**Last updated:** [April 2, 2024, 6:25pm UTC](https://discourse.mcneel.com/t/not-sure-when-to-use-list-types-and-getting-empty-output-sections/179233 "2024-04-02T18:25:31Z")

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Please reference the screenshot below. I’m getting some sections of output that should probably not exist. The project I’m working on is to import data from a RAM Structural Systems model to compare column locations an…

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## [Sublists with same values](https://discourse.mcneel.com/t/sublists-with-same-values/125686)

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**Author:** [@lu.yi](https://discourse.mcneel.com/u/lu.yi)\
**Replies:** 21\
**Last updated:** [March 29, 2024, 10:13am UTC](https://discourse.mcneel.com/t/sublists-with-same-values/125686 "2024-03-29T10:13:09Z")

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I have a list of many groups with “True” and “False”, and I want to get sublists for each “True” group and their index in the original list. How can I do it without programming? thanks

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## [Extraction of coordinates from a list (text & data)](https://discourse.mcneel.com/t/extraction-of-coordinates-from-a-list-text-data/175733)

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**Author:** [@mathi](https://discourse.mcneel.com/u/mathi)\
**Replies:** 4\
**Last updated:** [February 15, 2024, 4:33pm UTC](https://discourse.mcneel.com/t/extraction-of-coordinates-from-a-list-text-data/175733 "2024-02-15T16:33:23Z")

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Hello everyone, I am currently working on a project where I need to extract coordinates from a list containing both text and data. Having not found a satisfactory solution with Grasshopper components, I am exploring the…

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## [Retrieve Tree Branches from Grafted List](https://discourse.mcneel.com/t/retrieve-tree-branches-from-grafted-list/175734)

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**Author:** [@AmauryV](https://discourse.mcneel.com/u/AmauryV)\
**Replies:** 6\
**Last updated:** [February 15, 2024, 2:13pm UTC](https://discourse.mcneel.com/t/retrieve-tree-branches-from-grafted-list/175734 "2024-02-15T14:13:47Z")

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Hi everyone, I am trying to retrieve tree branches of a grafted list, hoping it would follow the initial grafted pattern as a guide. But even with the “Renumber” function of Tree Branch, I end up with items split in new…

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## [Creating list (X1-A ,X2-A,X3-A)](https://discourse.mcneel.com/t/creating-list-x1-a-x2-a-x3-a/172592)

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**Author:** [@Sri\_Hari](https://discourse.mcneel.com/u/Sri_Hari)\
**Replies:** 4\
**Last updated:** [January 3, 2024, 6:41pm UTC](https://discourse.mcneel.com/t/creating-list-x1-a-x2-a-x3-a/172592 "2024-01-03T18:41:32Z")

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Stuck on a creating list in Grasshopper. I need to generate sequential labels list like X1-A, X1-B, X2-A, X2-B, etc. can any one please help

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## [Rearrange points connections into lines with data lists](https://discourse.mcneel.com/t/rearrange-points-connections-into-lines-with-data-lists/170981)

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**Author:** [@Kevin\_Wong](https://discourse.mcneel.com/u/Kevin_Wong)\
**Replies:** 6\
**Last updated:** [December 12, 2023, 11:51am UTC](https://discourse.mcneel.com/t/rearrange-points-connections-into-lines-with-data-lists/170981 "2023-12-12T11:51:45Z")

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Hello there, I am trying to get control of which points I can connect. For Example: 55to13, 41to27, 27to41, 13to55 48to6,34to20, 20to34, 6to48 etc. They are two walls with the same data but one is inverted, I want to…

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## [Replace specific path](https://discourse.mcneel.com/t/replace-specific-path/170454)

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**Author:** [@crazydrummer310](https://discourse.mcneel.com/u/crazydrummer310)\
**Replies:** 1\
**Last updated:** [December 8, 2023, 1:23pm UTC](https://discourse.mcneel.com/t/replace-specific-path/170454 "2023-12-08T13:23:01Z")

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Hi everyone, i would like to replace some specific path inside a tree. more precisely, when I insert a text and generate surfaces from the letters, the letter i appears to have two surfaces: the i itself and the upper …

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## [Panel indices](https://discourse.mcneel.com/t/panel-indices/149025)

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**Author:** [@theophile.huauarmani](https://discourse.mcneel.com/u/theophile.huauarmani)\
**Replies:** 3\
**Last updated:** [November 22, 2023, 8:52am UTC](https://discourse.mcneel.com/t/panel-indices/149025 "2023-11-22T08:52:09Z")

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Hello, Just would like to know if someone has a great and simple idea to keep indicated the indices in a pannel when we edit a line ? (the indice disappear when we clic on a pannel to write something on it) For my proj…

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## [Split list with two or more columns into one list](https://discourse.mcneel.com/t/split-list-with-two-or-more-columns-into-one-list/169603)

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**Author:** [@NX30](https://discourse.mcneel.com/u/NX30)\
**Replies:** 3\
**Last updated:** [November 20, 2023, 10:10am UTC](https://discourse.mcneel.com/t/split-list-with-two-or-more-columns-into-one-list/169603 "2023-11-20T10:10:03Z")

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Hello! I’m currently facing a challenge in Grasshopper: I have a list with four columns and would like to split it into separate lists, each with only one column. The data comes from a database that I’ve imported into G…

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## [Can't restore the numbering order of elements](https://discourse.mcneel.com/t/cant-restore-the-numbering-order-of-elements/166470)

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**Author:** [@Vlad\_Poluektov](https://discourse.mcneel.com/u/Vlad_Poluektov)\
**Replies:** 7\
**Last updated:** [September 30, 2023, 3:45pm UTC](https://discourse.mcneel.com/t/cant-restore-the-numbering-order-of-elements/166470 "2023-09-30T15:45:23Z")

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Good afternoon! I had a list of lines of different lengths. I sorted the lines that are longer than the value I need, trimmed them to the required value and merged them with the rest of the lines. But the numbering orde…

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