# Finding a list of numbers in a list **URL:** \ **Category:** Questions\ **Created:** [January 2, 2026, 9:20pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475 "2026-01-02T21:20:28Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![User\_Named](https://avatars.discourse-cdn.com/v4/letter/u/77aa72/32.png) [@User\_Named](https://cl.desmos.com/u/User_Named)\ **Post date:** [January 2, 2026, 9:20pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/1 "2026-01-02T21:20:28Z")
I am confused on how I could find a list of numbers in another list of numbers. I think I explain it better in the [link](https://www.desmos.com/calculator/pp4b9mmk6w). [Lists Help | Desmos](https://www.desmos.com/calculator/pp4b9mmk6w) ---
**Author:** ![Guzman\_Tierno](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/guzman_tierno/32/6149_2.png) [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)\ **Post date:** [January 3, 2026, 10:43am UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/2 "2026-01-03T10:43:08Z")
Is this what you are looking for? [https://www.desmos.com/calculator/ccucrvap3d](https://www.desmos.com/calculator/ccucrvap3d) In the graph there is a function that finds the indices of all the occurrences of the elements of M in the list L. ---
**Author:** ![NTMDev](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/ntmdev/32/7141_2.png) [@NTMDev](https://cl.desmos.com/u/NTMDev)\ **Post date:** [January 5, 2026, 2:15pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/3 "2026-01-05T14:15:02Z")
I think maybe he wants to filter a list based on some function, like `floor`. Not sure how to do this. Can you not just do `floor([1.1,2.1,3.1])`? ---
**Author:** ![User\_Named](https://avatars.discourse-cdn.com/v4/letter/u/77aa72/32.png) [@User\_Named](https://cl.desmos.com/u/User_Named)\ **Post date:** [January 5, 2026, 4:39pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/4 "2026-01-05T16:39:55Z")
What I was trying to say was how could I _remove_ one list from another list. I was also trying to translate a list into a list of colors [(kind of like this)](https://www.desmos.com/calculator/3djcyakfdb), but I think I could figure it out myself. Thank you for your help! ---
**Author:** ![Guzman\_Tierno](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/guzman_tierno/32/6149_2.png) [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)\ **Post date:** [January 5, 2026, 4:59pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/5 "2026-01-05T16:59:58Z")
[https://www.desmos.com/calculator/her8vr6qle](https://www.desmos.com/calculator/her8vr6qle) r\_removeFromL(L, M) removes all elements of M from L ---
**Author:** ![Guzman\_Tierno](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/guzman_tierno/32/6149_2.png) [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)\ **Post date:** [January 5, 2026, 5:39pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/6 "2026-01-05T17:39:10Z")
to convert a list of of numbers into a list of colors you can just use those numbers as indices of your list of colors … (if they are in right range …) : [https://www.desmos.com/calculator/zzdzaxjkct](https://www.desmos.com/calculator/zzdzaxjkct) ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/desmos/original/2X/f/f5bd144684474e9a2f333002cde9840e52c5dbd3.png) [@system](https://cl.desmos.com/u/system)\ **Post date:** [January 7, 2026, 5:39pm UTC](https://cl.desmos.com/t/finding-a-list-of-numbers-in-a-list/8475/7 "2026-01-07T17:39:21Z")
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