# Latest

**URL:** https://discourse.julialang.org/latest.md?page=222

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

**Page:** 223

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## [In search of categorical color scheme families: dark, same perceptual brightness](https://discourse.julialang.org/t/in-search-of-categorical-color-scheme-families-dark-same-perceptual-brightness/109560)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 24\
**Last updated:** [February 10, 2025, 1:58pm UTC](https://discourse.julialang.org/t/in-search-of-categorical-color-scheme-families-dark-same-perceptual-brightness/109560 "2025-02-10T13:58:53Z")

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I frequently want to plot categorical data on a white background (eg a scatterplot, with various colors for each kind). My ideal color scheme would be reasonably dark, as I am plotting on a white background, have more …

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## [Another problem with Julia 1.11.1](https://discourse.julialang.org/t/another-problem-with-julia-1-11-1/121432)

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**Author:** [@Dario-Rosa85](https://discourse.julialang.org/u/Dario-Rosa85)\
**Replies:** 9\
**Last updated:** [February 10, 2025, 12:27pm UTC](https://discourse.julialang.org/t/another-problem-with-julia-1-11-1/121432 "2025-02-10T12:27:11Z")

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I have freshly updated Julia to 1.11.1 but, like others, I am getting in trouble. Superficially, I would say that my problem is slightly different from what others are reporting. Therefore, I report also my version: I…

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## [Running Julia Script through another Script](https://discourse.julialang.org/t/running-julia-script-through-another-script/125744)

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**Author:** [@Kamran\_Ali](https://discourse.julialang.org/u/Kamran_Ali)\
**Replies:** 1\
**Last updated:** [February 10, 2025, 11:51am UTC](https://discourse.julialang.org/t/running-julia-script-through-another-script/125744 "2025-02-10T11:51:47Z")

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I have two scripts A.jl and B.jl, and want to create a script in A.jl that runs B.jl, if there is any idea, how can i do that ? In short, I want to run my julia script through another julia file.

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## [Can't I update velocity AND position of a continuous agent using a custom move\_agent! that is not based on forward euler?](https://discourse.julialang.org/t/cant-i-update-velocity-and-position-of-a-continuous-agent-using-a-custom-move-agent-that-is-not-based-on-forward-euler/125697)

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**Author:** [@raylv17](https://discourse.julialang.org/u/raylv17)\
**Replies:** 1\
**Last updated:** [February 10, 2025, 11:32am UTC](https://discourse.julialang.org/t/cant-i-update-velocity-and-position-of-a-continuous-agent-using-a-custom-move-agent-that-is-not-based-on-forward-euler/125697 "2025-02-10T11:32:45Z")

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I am using the latest Agents.jl (v.6.2.4) package and learning it as well. I want to implement a simple movement of different agents by trying out various differential equation solvers (besides the default forward euler …

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## [Another freezing test CUDA](https://discourse.julialang.org/t/another-freezing-test-cuda/125667)

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**Author:** [@togo59](https://discourse.julialang.org/u/togo59)\
**Replies:** 4\
**Last updated:** [February 10, 2025, 11:19am UTC](https://discourse.julialang.org/t/another-freezing-test-cuda/125667 "2025-02-10T11:19:04Z")

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I get no errors at all that I can find. But when I run Pkg.test("CUDA"; test\_args=–verbose --jobs=1) after a while my computer freezes up. I have 6-core Intel CPU with 12GB and I have just installed an Intel A2000, which…

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## [Reprojecting maps](https://discourse.julialang.org/t/reprojecting-maps/97101)

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**Author:** [@mreichMPI-BGC](https://discourse.julialang.org/u/mreichMPI-BGC)\
**Replies:** 14\
**Last updated:** [February 10, 2025, 8:47am UTC](https://discourse.julialang.org/t/reprojecting-maps/97101 "2025-02-10T08:47:57Z")

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Dear community, does anyone have a recipe/example of how to reproject a map, e.g. from lat/lon to Robinson (for my use case just global is enough)? Please note I do not just want to plot (cf. GeoMakie), but get a Raster…

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## [Performance Difference in Matrix Multiplication with Symmetric Matrices](https://discourse.julialang.org/t/performance-difference-in-matrix-multiplication-with-symmetric-matrices/125727)

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**Author:** [@swanchristmas](https://discourse.julialang.org/u/swanchristmas)\
**Replies:** 3\
**Last updated:** [February 10, 2025, 10:09am UTC](https://discourse.julialang.org/t/performance-difference-in-matrix-multiplication-with-symmetric-matrices/125727 "2025-02-10T10:09:29Z")

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Hi everyone, I have a question regarding the performance of matrix multiplication involving symmetric matrices in Julia. Here’s my code and the results: let N = 1000 λ, Γp = \[randn(N, N) for \_ in 1:2\] Γp\_symm =…

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## [Problem not updating param while running optimzation](https://discourse.julialang.org/t/problem-not-updating-param-while-running-optimzation/125738)

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**Author:** [@Marta\_Pardo\_Araujo](https://discourse.julialang.org/u/Marta_Pardo_Araujo)\
**Replies:** 0\
**Last updated:** [February 10, 2025, 10:17am UTC](https://discourse.julialang.org/t/problem-not-updating-param-while-running-optimzation/125738 "2025-02-10T10:17:27Z")

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Hi, I have this code to estimate the parameters of a ODE system. I do not know why it is not updating the parameters inside the optimization. I print them and they do not change. This is a test sample of the code: impor…

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## [Reverse Makie Colorbar](https://discourse.julialang.org/t/reverse-makie-colorbar/125659)

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**Author:** [@JoergF](https://discourse.julialang.org/u/JoergF)\
**Replies:** 2\
**Last updated:** [February 10, 2025, 10:18am UTC](https://discourse.julialang.org/t/reverse-makie-colorbar/125659 "2025-02-10T10:18:26Z")

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I was wondering if there is any possibility to reverse the ticks in a Colorbar. I.e. instead of counting up 1:4 doing something like 4:-1:1. This snippet however still has 1 at the bottom and 4 at the top fig = Figure(…

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## [Symbolic .+ fails when substitute with fold=true](https://discourse.julialang.org/t/symbolic-fails-when-substitute-with-fold-true/125687)

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**Author:** [@RobbesU](https://discourse.julialang.org/u/RobbesU)\
**Replies:** 2\
**Last updated:** [February 10, 2025, 8:57am UTC](https://discourse.julialang.org/t/symbolic-fails-when-substitute-with-fold-true/125687 "2025-02-10T08:57:49Z")

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When substituteing a symbolic equation, I get .+ throwing an error when used on its own with fold=true. Example below: All equations work apart from a1b, which fails with MethodError: no method matching +(::Vector{Floa…

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## [For Julia programmers who work in industry. What do you work on?](https://discourse.julialang.org/t/for-julia-programmers-who-work-in-industry-what-do-you-work-on/125227)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 37\
**Last updated:** [February 10, 2025, 7:32am UTC](https://discourse.julialang.org/t/for-julia-programmers-who-work-in-industry-what-do-you-work-on/125227 "2025-02-10T07:32:39Z")

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Just wondering what kind of things do you do in your industry.

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## [Julia version of state-machine pattern](https://discourse.julialang.org/t/julia-version-of-state-machine-pattern/125484)

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**Author:** [@Dan](https://discourse.julialang.org/u/Dan)\
**Replies:** 1\
**Last updated:** [February 3, 2025, 12:03pm UTC](https://discourse.julialang.org/t/julia-version-of-state-machine-pattern/125484 "2025-02-03T12:03:18Z")

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There is an interesting tweet-thread about a Swift pattern which should have a corresponding Julia version: Anyone wants to show a Julia version?

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## [REPL syntax highlighting with StyledStrings](https://discourse.julialang.org/t/repl-syntax-highlighting-with-styledstrings/125708)

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**Author:** [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)\
**Replies:** 3\
**Last updated:** [February 10, 2025, 5:23am UTC](https://discourse.julialang.org/t/repl-syntax-highlighting-with-styledstrings/125708 "2025-02-10T05:23:46Z")

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A while ago somewhere I saw a screen shot of the Julia REPL with syntax highlighting provided by StyledStrings, but I haven’t heard anything about it since then. Is that still in the works? @tecosaur

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## [New Package: Matroids](https://discourse.julialang.org/t/new-package-matroids/125716)

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**Author:** [@scheinerman](https://discourse.julialang.org/u/scheinerman)\
**Replies:** 0\
**Last updated:** [February 10, 2025, 1:25am UTC](https://discourse.julialang.org/t/new-package-matroids/125716 "2025-02-10T01:25:48Z")

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I am pleased to announce the creation of a Matroids module for Julia. Matroids provide an abstract notion of linear independence, and may be considered a generalization of matrices and graphs. Roughly speaking, they are…

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## [Cache sizes getting smaller (some, i.e. L1; though not per core-cache) for AMD (unlike for Apple), for multi-threading?](https://discourse.julialang.org/t/cache-sizes-getting-smaller-some-i-e-l1-though-not-per-core-cache-for-amd-unlike-for-apple-for-multi-threading/125258)

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**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 6\
**Last updated:** [February 9, 2025, 10:58pm UTC](https://discourse.julialang.org/t/cache-sizes-getting-smaller-some-i-e-l1-though-not-per-core-cache-for-amd-unlike-for-apple-for-multi-threading/125258 "2025-02-09T22:58:25Z")

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Apple M1 was an impressive chip with for L1 cache (and those numbers matter, not just the larger MB-sized numbers people like to promote for L2+): Performance cores 192+128 KiB per core Efficiency cores 128+64 KiB p…

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## [Julia Web Github Repo](https://discourse.julialang.org/t/julia-web-github-repo/125714)

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**Author:** [@nimthenimble](https://discourse.julialang.org/u/nimthenimble)\
**Replies:** 2\
**Last updated:** [February 9, 2025, 10:47pm UTC](https://discourse.julialang.org/t/julia-web-github-repo/125714 "2025-02-09T22:47:37Z")

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Hello people. I’m new to the forum, so sorry if I didn’t use the correct category/tags for this post. I just made a PR to the Julia Web Repo and I would like to ask if this repo is still managed by a member of staff or …

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## [Choosing between Symmetric and Hermitian programmatically in JuMP](https://discourse.julialang.org/t/choosing-between-symmetric-and-hermitian-programmatically-in-jump/125701)

<div class="topic-metadata">

**Author:** [@araujoms](https://discourse.julialang.org/u/araujoms)\
**Replies:** 9\
**Last updated:** [February 9, 2025, 8:55pm UTC](https://discourse.julialang.org/t/choosing-between-symmetric-and-hermitian-programmatically-in-jump/125701 "2025-02-09T20:55:17Z")

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I want to switch between Symmetric and Hermitian variables depending on the input data. For data I’d like to define a variable a, that can be either and then create the variable, e.g. a = Symmetric model = Model() @vari…

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## [Suggestion: name for a Julia port of the DICE climate change model](https://discourse.julialang.org/t/suggestion-name-for-a-julia-port-of-the-dice-climate-change-model/125702)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 3\
**Last updated:** [February 9, 2025, 6:49pm UTC](https://discourse.julialang.org/t/suggestion-name-for-a-julia-port-of-the-dice-climate-change-model/125702 "2025-02-09T18:49:45Z")

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I have tried with JuliaDICE, but I missed that “JuliaX” is not considered a valid package name. There is already a (largely unmaintained and with slight different objectives) unregistered package DICE.jl (plus another, …

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## [Help with shared arrays - code update](https://discourse.julialang.org/t/help-with-shared-arrays-code-update/125692)

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**Author:** [@Fernando1](https://discourse.julialang.org/u/Fernando1)\
**Replies:** 2\
**Last updated:** [February 9, 2025, 6:13pm UTC](https://discourse.julialang.org/t/help-with-shared-arrays-code-update/125692 "2025-02-09T18:13:05Z")

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Hi all, this is the same post as I had done before but with the code correctly added. I am trying to run a “Simulate” function living in a separate module and extract the states from it with a getStates function. The id…

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## [Using cuBLASDx in Julia](https://discourse.julialang.org/t/using-cublasdx-in-julia/125527)

<div class="topic-metadata">

**Author:** [@CaG21](https://discourse.julialang.org/u/CaG21)\
**Replies:** 6\
**Last updated:** [February 9, 2025, 2:54pm UTC](https://discourse.julialang.org/t/using-cublasdx-in-julia/125527 "2025-02-09T14:54:39Z")

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I am really interested in using cuBLASDx, that is the CUDA API set to perform BLAS calculations inside CUDA kernels. However, since it is not provided in the CUDA Toolkit, but it should be downloaded separately, it seems…

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## [How to change dims data from NT or T to ::OutDims for YAXArrays.DAT.OutputCube](https://discourse.julialang.org/t/how-to-change-dims-data-from-nt-or-t-to-outdims-for-yaxarrays-dat-outputcube/125700)

<div class="topic-metadata">

**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 0\
**Last updated:** [February 9, 2025, 9:17am UTC](https://discourse.julialang.org/t/how-to-change-dims-data-from-nt-or-t-to-outdims-for-yaxarrays-dat-outputcube/125700 "2025-02-09T09:17:41Z")

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Hi guys, I am new to Julia, and wants to run a function which is like: outcubes = mapCube(TEMYax, (incubes...,); selected\_models=selected\_models, forcing\_vars=forcing.variables, output\_v…

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## [Quarto + Typst (+ tdf ) save your eyes from reading documents](https://discourse.julialang.org/t/quarto-typst-tdf-save-your-eyes-from-reading-documents/123587)

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**Author:** [@terasakisatoshi](https://discourse.julialang.org/u/terasakisatoshi)\
**Replies:** 21\
**Last updated:** [February 9, 2025, 5:42am UTC](https://discourse.julialang.org/t/quarto-typst-tdf-save-your-eyes-from-reading-documents/123587 "2025-02-09T05:42:25Z")

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Do you know the Riemann zeta function? \\zeta(s) = \\sum\_{n=1}^\\infty \\frac{1}{n^s} Especially, for s=2 we have \\zeta(2) = \\pi^2/6. The \\zeta(s) is implemented in SpecialFunctions.jl. Indeed, julia\> using SpecialFuncti…

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## [Speed of ldiv! for banded matrices in BandedMatrices.jl](https://discourse.julialang.org/t/speed-of-ldiv-for-banded-matrices-in-bandedmatrices-jl/125647)

<div class="topic-metadata">

**Author:** [@Ouyuan](https://discourse.julialang.org/u/Ouyuan)\
**Replies:** 2\
**Last updated:** [February 9, 2025, 4:11am UTC](https://discourse.julialang.org/t/speed-of-ldiv-for-banded-matrices-in-bandedmatrices-jl/125647 "2025-02-09T04:11:45Z")

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Theoretically, solving banded matrix stored in Float32 should be twice faster than that stored in Float64. But this is not verified in my codes using BandedMatrices.jl. (Note that creating a random vector costs far less …

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## [Julia irresponsive with threads=auto and using ImageView](https://discourse.julialang.org/t/julia-irresponsive-with-threads-auto-and-using-imageview/125669)

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**Author:** [@dgagnon](https://discourse.julialang.org/u/dgagnon)\
**Replies:** 5\
**Last updated:** [February 9, 2025, 4:08am UTC](https://discourse.julialang.org/t/julia-irresponsive-with-threads-auto-and-using-imageview/125669 "2025-02-09T04:08:03Z")

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Hello I have noticed that with the switch --threads=auto while starting Julia and using package ImageView the system has trouble responding to keyboard hits. If I try using up, down, left or right arrows on my keyboard …

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## [Help with changing Pluto notebook font sizes](https://discourse.julialang.org/t/help-with-changing-pluto-notebook-font-sizes/125694)

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**Author:** [@gganapat](https://discourse.julialang.org/u/gganapat)\
**Replies:** 0\
**Last updated:** [February 8, 2025, 7:28pm UTC](https://discourse.julialang.org/t/help-with-changing-pluto-notebook-font-sizes/125694 "2025-02-08T19:28:49Z")

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I am able to change Pluto notebook input font size but unable to change output font. The code I used was html"“” .cm-editor .cm-scroller, .cm-editor .cm-content { font-family: "Fira Code", monospace !important; …

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## [Help with shared arrays](https://discourse.julialang.org/t/help-with-shared-arrays/125233)

<div class="topic-metadata">

**Author:** [@Fernando1](https://discourse.julialang.org/u/Fernando1)\
**Replies:** 3\
**Last updated:** [February 8, 2025, 7:11pm UTC](https://discourse.julialang.org/t/help-with-shared-arrays/125233 "2025-02-08T19:11:12Z")

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I am trying to run a “Simulate” function living in a separate module and extract the states from it with a getStates function. The idea is that I launch the sim to a parallel process and get the states after some time t…

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## [New to Agents.jl, trouble retrieving agent velocity](https://discourse.julialang.org/t/new-to-agents-jl-trouble-retrieving-agent-velocity/125469)

<div class="topic-metadata">

**Author:** [@NaixNix](https://discourse.julialang.org/u/NaixNix)\
**Replies:** 4\
**Last updated:** [February 8, 2025, 6:24pm UTC](https://discourse.julialang.org/t/new-to-agents-jl-trouble-retrieving-agent-velocity/125469 "2025-02-08T18:24:11Z")

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Is there a way to retrieve each agent’s velocity in the Agents.jl flocking model per time step of the abmvideo command? For reference, the abmvideo command goes abmvideo( "flocking.mp4", model; agent\_marker = bi…

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## [Errors when running a Universal Differential Equation (UDE)](https://discourse.julialang.org/t/errors-when-running-a-universal-differential-equation-ude/125273)

<div class="topic-metadata">

**Author:** [@Ashima\_Kalathingal](https://discourse.julialang.org/u/Ashima_Kalathingal)\
**Replies:** 8\
**Last updated:** [February 8, 2025, 12:50pm UTC](https://discourse.julialang.org/t/errors-when-running-a-universal-differential-equation-ude/125273 "2025-02-08T12:50:58Z")

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Hello, I am building a UDE as a part of my work in Julia. I am using the following example as reference https://docs.sciml.ai/Overview/stable/showcase/missing\_physics/ Unfortunately I am getting a warning message and …

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## [\`eigen\` with \`sortby\` does not work for \`StaticArrays\`](https://discourse.julialang.org/t/eigen-with-sortby-does-not-work-for-staticarrays/125682)

<div class="topic-metadata">

**Author:** [@heliosdrm](https://discourse.julialang.org/u/heliosdrm)\
**Replies:** 1\
**Last updated:** [February 8, 2025, 12:29pm UTC](https://discourse.julialang.org/t/eigen-with-sortby-does-not-work-for-staticarrays/125682 "2025-02-08T12:29:59Z")

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As reported in the following post, eigen can be called with a sortby argument to provide the output in a different order, e.g. in descending order of the eigenvalues’ real part instead of the default. However, this doe…

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## [\[ANN\] Introducing AlternateVectors.jl - A Library for Peculiar One-Dimensional Array Patterns](https://discourse.julialang.org/t/ann-introducing-alternatevectors-jl-a-library-for-peculiar-one-dimensional-array-patterns/125686)

<div class="topic-metadata">

**Author:** [@rcalxrc08](https://discourse.julialang.org/u/rcalxrc08)\
**Replies:** 0\
**Last updated:** [February 8, 2025, 11:54am UTC](https://discourse.julialang.org/t/ann-introducing-alternatevectors-jl-a-library-for-peculiar-one-dimensional-array-patterns/125686 "2025-02-08T11:54:29Z")

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Hello Julia Developers, I’m excited to introduce you to AlternateVectors.jl, a new Julia library designed to provide useful array representations for peculiar one-dimensional array patterns. What is AlternateVectors.jl?…

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