# Latest

**URL:** https://discourse.julialang.org/latest.md?page=124

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

**Page:** 125

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## [Performant table representation](https://discourse.julialang.org/t/performant-table-representation/129880)

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**Author:** [@Gesee](https://discourse.julialang.org/u/Gesee)\
**Replies:** 11\
**Last updated:** [August 8, 2025, 1:33pm UTC](https://discourse.julialang.org/t/performant-table-representation/129880 "2025-08-08T13:33:21Z")

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Actually I am trying to represent a table in Julia. Each column has a name and we should be able to add new column on the fly. Getting column and row should be fast since these are frequent operations on my work. Is th…

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## [\[NEW BOOK\] Geospatial Data Science with Julia](https://discourse.julialang.org/t/new-book-geospatial-data-science-with-julia/103364)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 13\
**Last updated:** [August 8, 2025, 12:15pm UTC](https://discourse.julialang.org/t/new-book-geospatial-data-science-with-julia/103364 "2025-08-08T12:15:13Z")

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The book will be published soon, and will contain practical applications of the framework we built over the years. If you would like to see an application in a specific area (e.g., agriculture, groundwater, environmen…

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## [\[ANN\] ModelingToolkitTolerances.jl](https://discourse.julialang.org/t/ann-modelingtoolkittolerances-jl/131460)

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**Author:** [@Brad\_Carman](https://discourse.julialang.org/u/Brad_Carman)\
**Replies:** 2\
**Last updated:** [August 8, 2025, 11:24am UTC](https://discourse.julialang.org/t/ann-modelingtoolkittolerances-jl/131460 "2025-08-08T11:24:41Z")

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Very happy to announce a new package I’ve been working on to help debug ModelingToolkit.jl models. Using the power of Julia’s autodiff and the symbolics in ModelingToolkit.jl, it’s possible to estimate the error (or r…

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## [How to deal with threadid() \<= nthreads() being not true in 1.12?](https://discourse.julialang.org/t/how-to-deal-with-threadid-nthreads-being-not-true-in-1-12/131473)

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**Author:** [@sumiya11](https://discourse.julialang.org/u/sumiya11)\
**Replies:** 1\
**Last updated:** [August 8, 2025, 10:12am UTC](https://discourse.julialang.org/t/how-to-deal-with-threadid-nthreads-being-not-true-in-1-12/131473 "2025-08-08T10:12:50Z")

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Hello, I recently found out that this assertion fires on 1.12.0-rc1 (seems fine on 1.11.6): using Base.Threads @threads for i in 1:100 @assert threadid() \<= nthreads() end Some of my code has @threads :static and …

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## [Looking for custom instructions / settings for coding agents](https://discourse.julialang.org/t/looking-for-custom-instructions-settings-for-coding-agents/131471)

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**Author:** [@njacki](https://discourse.julialang.org/u/njacki)\
**Replies:** 0\
**Last updated:** [August 8, 2025, 10:00am UTC](https://discourse.julialang.org/t/looking-for-custom-instructions-settings-for-coding-agents/131471 "2025-08-08T10:00:06Z")

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Hi everyone, I recently did give a try to a coding agent, seeing the fuzz about it everywhere finally convinced me to click on it. I briefly tested it for scientific code translation from Fortran but already face some i…

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## [Set ylims in marginplot](https://discourse.julialang.org/t/set-ylims-in-marginplot/131469)

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**Author:** [@maltee1](https://discourse.julialang.org/u/maltee1)\
**Replies:** 3\
**Last updated:** [August 8, 2025, 9:31am UTC](https://discourse.julialang.org/t/set-ylims-in-marginplot/131469 "2025-08-08T09:31:39Z")

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How do I set y limits for marginplot (or bodeplot)? ylims just sets the limits for both the margin and the phase the same, which is rarely helpful. There is ylimsphase, which only works for bodeplot, not marginplot, and …

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## [Get Numba LLVM IR differentiated in Julia using Enzyme.jl](https://discourse.julialang.org/t/get-numba-llvm-ir-differentiated-in-julia-using-enzyme-jl/131255)

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**Author:** [@ymardoukhi](https://discourse.julialang.org/u/ymardoukhi)\
**Replies:** 15\
**Last updated:** [August 8, 2025, 9:12am UTC](https://discourse.julialang.org/t/get-numba-llvm-ir-differentiated-in-julia-using-enzyme-jl/131255 "2025-08-08T09:12:25Z")

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I have seen scarce material regarding Numba and Enzyme, e.g. this Numba GitHub issue or this talk at Enzyme conference 2023. I have this simple cosine function in Python, wrapped around the numba.@cfunc decorator. From …

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## [How to implement Value Suppressing Colormaps in Makie](https://discourse.julialang.org/t/how-to-implement-value-suppressing-colormaps-in-makie/129140)

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**Author:** [@vladdez](https://discourse.julialang.org/u/vladdez)\
**Replies:** 11\
**Last updated:** [August 7, 2025, 9:15am UTC](https://discourse.julialang.org/t/how-to-implement-value-suppressing-colormaps-in-makie/129140 "2025-08-07T09:15:50Z")

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I would like to implement Value Suppressing Colormap described in this paper https://dl.acm.org/doi/abs/10.1145/3173574.3174216 Which requires: triangular colorbar bivariate colormap, where I can manipulate color h…

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## [C:\\Users\\MMMM\\.julia\\artifacts\\GUID\\bin\\librsvg-2-2.dll is either not designed to run on Windows or it contains an error](https://discourse.julialang.org/t/c-users-mmmm-julia-artifacts-guid-bin-librsvg-2-2-dll-is-either-not-designed-to-run-on-windows-or-it-contains-an-error/131465)

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**Author:** [@tdm](https://discourse.julialang.org/u/tdm)\
**Replies:** 7\
**Last updated:** [August 8, 2025, 7:14am UTC](https://discourse.julialang.org/t/c-users-mmmm-julia-artifacts-guid-bin-librsvg-2-2-dll-is-either-not-designed-to-run-on-windows-or-it-contains-an-error/131465 "2025-08-08T07:14:54Z")

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Anytime I am trying to add a package that uses vector graphics, it fails precompilation with the window popup error: “C:\\Users\\MMMM.julia\\artifacts\\GUID\\bin\\librsvg-2-2.dll is either not designed to run on Windows or it…

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## [Which Linux to install for old workstation](https://discourse.julialang.org/t/which-linux-to-install-for-old-workstation/131380)

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**Author:** [@PeterSimon](https://discourse.julialang.org/u/PeterSimon)\
**Replies:** 15\
**Last updated:** [August 8, 2025, 4:57am UTC](https://discourse.julialang.org/t/which-linux-to-install-for-old-workstation/131380 "2025-08-08T04:57:21Z")

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I’ve inherited an old workstation that I plan to use with a commercial program (Ansys HFSS) and Julia (of course). The workstation consists of 2 x Xeon E5-2643 v4 CPUs 256 GByte DDR4-2400 ECC RAM NVIDIA Quadro P1000 …

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## [Unexpected allocations after re-including unchanged file in ODE simulation](https://discourse.julialang.org/t/unexpected-allocations-after-re-including-unchanged-file-in-ode-simulation/131445)

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**Author:** [@Vladislav](https://discourse.julialang.org/u/Vladislav)\
**Replies:** 2\
**Last updated:** [August 8, 2025, 4:10am UTC](https://discourse.julialang.org/t/unexpected-allocations-after-re-including-unchanged-file-in-ode-simulation/131445 "2025-08-08T04:10:15Z")

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Hello! I’m running a large number of parallel Monte Carlo simulations, so I’m working to minimize memory allocations in my code. While doing this, I encountered some behavior I don’t fully understand. I’m using Julia V…

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## [Downgrading NonlinearExpr to QuadExpr or AffExpr](https://discourse.julialang.org/t/downgrading-nonlinearexpr-to-quadexpr-or-affexpr/131462)

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**Author:** [@brunompacheco](https://discourse.julialang.org/u/brunompacheco)\
**Replies:** 6\
**Last updated:** [August 8, 2025, 3:14am UTC](https://discourse.julialang.org/t/downgrading-nonlinearexpr-to-quadexpr-or-affexpr/131462 "2025-08-08T03:14:48Z")

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Hi! My question is related to Evaluating nonlinear expressions with variable references · Issue #4044 · jump-dev/JuMP.jl · GitHub TL;DR: I want to take a JuMP expression and replace some of the VariableRef by numerical…

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## [Why is the backtick misfunctioning now?](https://discourse.julialang.org/t/why-is-the-backtick-misfunctioning-now/131463)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 4\
**Last updated:** [August 8, 2025, 1:28am UTC](https://discourse.julialang.org/t/why-is-the-backtick-misfunctioning-now/131463 "2025-08-08T01:28:20Z")

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I want to type: there is an \`x\` and an \`y\` there is an \`x\` there is an \`xand any there is an x and an y. Here’s what it looks like. I encounter it today.

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## [\[ANN\] MultipleInterfaces.jl: Interfaces with multiple inheritance and multiple dispatch](https://discourse.julialang.org/t/ann-multipleinterfaces-jl-interfaces-with-multiple-inheritance-and-multiple-dispatch/130796)

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**Author:** [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)\
**Replies:** 28\
**Last updated:** [August 8, 2025, 12:39am UTC](https://discourse.julialang.org/t/ann-multipleinterfaces-jl-interfaces-with-multiple-inheritance-and-multiple-dispatch/130796 "2025-08-08T00:39:15Z")

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I’m pleased to announce the release of MultipleInterfaces.jl. MultipleInterfaces.jl provides a powerful way to define and work with interfaces in Julia. With MultipleInterfaces.jl you can declare an interface that is def…

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## [Downloads.download() error](https://discourse.julialang.org/t/downloads-download-error/131408)

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**Author:** [@tomtom](https://discourse.julialang.org/u/tomtom)\
**Replies:** 2\
**Last updated:** [August 7, 2025, 6:19pm UTC](https://discourse.julialang.org/t/downloads-download-error/131408 "2025-08-07T18:19:39Z")

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import Downloads Downloads.download("https://www.hkex.com.hk/eng/stat/smstat/dayquot/d250806e.htm") produces the error: ERROR: RequestError: HTTP/2 stream 1 was not closed cleanly: INTERNAL\_ERROR (err 2) while requesti…

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## [Error: curl\_multi\_assign: 1======================\> \] 48/50](https://discourse.julialang.org/t/error-curl-multi-assign-1-48-50/131444)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 4\
**Last updated:** [August 7, 2025, 5:38pm UTC](https://discourse.julialang.org/t/error-curl-multi-assign-1-48-50/131444 "2025-08-07T17:38:02Z")

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When installing \[FLORIDyn.jl\]( GitHub - ufechner7/FLORIDyn.jl: Dynamic wind farm simulation software ) on a cluster I get the following error: (FLORIDyn) pkg\> up Updating registry at \`~/.julia/registries/General.tom…

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## [Using getrf\_batched to find matrix inverses](https://discourse.julialang.org/t/using-getrf-batched-to-find-matrix-inverses/131449)

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**Author:** [@JackC](https://discourse.julialang.org/u/JackC)\
**Replies:** 2\
**Last updated:** [August 7, 2025, 3:45pm UTC](https://discourse.julialang.org/t/using-getrf-batched-to-find-matrix-inverses/131449 "2025-08-07T15:45:55Z")

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Hello, I am pretty new to GPU programming in general, so apologies in advanced for sounding clueless. I have a problem where I need to find the inverses of a bunch of relatively small matrices on a GPU using LU factoriz…

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## [Overview of ways to use/provide Julia offline](https://discourse.julialang.org/t/overview-of-ways-to-use-provide-julia-offline/131454)

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**Author:** [@LinusSch](https://discourse.julialang.org/u/LinusSch)\
**Replies:** 0\
**Last updated:** [August 7, 2025, 3:26pm UTC](https://discourse.julialang.org/t/overview-of-ways-to-use-provide-julia-offline/131454 "2025-08-07T15:26:55Z")

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I am trying to achieve an understanding of the best ways to use and/or provide a Julia environment when there is no internet connection, either for a secure system or for a remote location. I can see that there is two si…

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## [Adding a plot onto a heatmap with scale squeezes it in Plots.jl](https://discourse.julialang.org/t/adding-a-plot-onto-a-heatmap-with-scale-squeezes-it-in-plots-jl/131439)

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**Author:** [@Gako](https://discourse.julialang.org/u/Gako)\
**Replies:** 2\
**Last updated:** [August 7, 2025, 11:50am UTC](https://discourse.julialang.org/t/adding-a-plot-onto-a-heatmap-with-scale-squeezes-it-in-plots-jl/131439 "2025-08-07T11:50:55Z")

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I want to add a reference line to a heatmap and am currently doing it as follows: using Plots plot1 = heatmap(1:100, 1:100, rand(100, 100), scale=:log10) plot!(plot1, 1:100, ones(100) .\* 4, label="") This works but som…

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## [Help using GLMakie or WGLMakie on ssh](https://discourse.julialang.org/t/help-using-glmakie-or-wglmakie-on-ssh/125507)

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**Author:** [@Salmon](https://discourse.julialang.org/u/Salmon)\
**Replies:** 13\
**Last updated:** [August 7, 2025, 11:22am UTC](https://discourse.julialang.org/t/help-using-glmakie-or-wglmakie-on-ssh/125507 "2025-08-07T11:22:31Z")

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Hi everyone. I need to make some 3D plots for which I cannot use Cairomakie. My local machine is a windows computer to which I connect via vscode-ssh to a linux computer. I would be happy to just generate a png with ei…

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## [How to install PyPlot on a server](https://discourse.julialang.org/t/how-to-install-pyplot-on-a-server/131419)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 3\
**Last updated:** [August 7, 2025, 11:06am UTC](https://discourse.julialang.org/t/how-to-install-pyplot-on-a-server/131419 "2025-08-07T11:06:01Z")

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When trying to install PyPlot on DelftBlue, the supercomputer of TU Delft, running on Red Hat Enterprise Linux 8, I get the following error: ImportError("/home/uwefechner/.julia/juliaup/julia-1.11.6+0.x64.linux.gnu/bin/…

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## [CI integration failed with Gurobi.jl in environment](https://discourse.julialang.org/t/ci-integration-failed-with-gurobi-jl-in-environment/126236)

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**Author:** [@Betristor](https://discourse.julialang.org/u/Betristor)\
**Replies:** 13\
**Last updated:** [August 7, 2025, 8:40am UTC](https://discourse.julialang.org/t/ci-integration-failed-with-gurobi-jl-in-environment/126236 "2025-08-07T08:40:01Z")

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I have a Julia package in development which has Gurobi.jl in environment as an available solver. Somehow, the github CI integration is against the Gurobi.jl pre-compilation since no license could be found on github actio…

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## [(misintepreted and not exist) Overhead in ccall due to unsafe\_convert of pointers](https://discourse.julialang.org/t/misintepreted-and-not-exist-overhead-in-ccall-due-to-unsafe-convert-of-pointers/131428)

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**Author:** [@jsjie](https://discourse.julialang.org/u/jsjie)\
**Replies:** 3\
**Last updated:** [August 7, 2025, 8:16am UTC](https://discourse.julialang.org/t/misintepreted-and-not-exist-overhead-in-ccall-due-to-unsafe-convert-of-pointers/131428 "2025-08-07T08:16:49Z")

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It have been found to be a logic problem, and the MWE is due to wrong measurement. Some multi-threaded issue may exist, but that’s completely another story and should be discussed in another thread. A MWE: julia\> a = z…

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## [GLMakie: line segments missing in plot of large data set](https://discourse.julialang.org/t/glmakie-line-segments-missing-in-plot-of-large-data-set/131244)

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**Author:** [@marast](https://discourse.julialang.org/u/marast)\
**Replies:** 6\
**Last updated:** [August 7, 2025, 8:13am UTC](https://discourse.julialang.org/t/glmakie-line-segments-missing-in-plot-of-large-data-set/131244 "2025-08-07T08:13:36Z")

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Hello, in plots of large data sets with GLMakie some line segments are missing. This behaviour started from version 0.13.0. I reduced it to the following example: using GLMakie # generating data Δt = 0.02 t\_max = 1000…

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## [Automerge issues in package creation](https://discourse.julialang.org/t/automerge-issues-in-package-creation/131418)

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**Author:** [@Baptiste\_PJ](https://discourse.julialang.org/u/Baptiste_PJ)\
**Replies:** 3\
**Last updated:** [August 7, 2025, 7:37am UTC](https://discourse.julialang.org/t/automerge-issues-in-package-creation/131418 "2025-08-07T07:37:49Z")

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Dear community, I am trying to create a package via this page (How to develop a Julia package), using the associated repository GitHub - BP-J/IncrementalSignFeasibility.jl: Repository aimed for the Julia package with the…

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## [CensoredDistributions.jl: Additional censored event tools for Distributions.jl](https://discourse.julialang.org/t/censoreddistributions-jl-additional-censored-event-tools-for-distributions-jl/131328)

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**Author:** [@seabbs](https://discourse.julialang.org/u/seabbs)\
**Replies:** 4\
**Last updated:** [August 7, 2025, 7:08am UTC](https://discourse.julialang.org/t/censoreddistributions-jl-additional-censored-event-tools-for-distributions-jl/131328 "2025-08-07T07:08:44Z")

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Hi there! New (and my first woo) package aiming to extend censoring support for distributions to include primary and secondary within-interval event censoring we see a lot of in epidemiology. Some more extended thoug…

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## [Blockchain](https://discourse.julialang.org/t/blockchain/7365)

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**Author:** [@Loic\_Chappaz](https://discourse.julialang.org/u/Loic_Chappaz)\
**Replies:** 37\
**Last updated:** [August 7, 2025, 4:25am UTC](https://discourse.julialang.org/t/blockchain/7365 "2025-08-07T04:25:38Z")

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Hi Hi all, \[Disclaimer: I am not sure this is the best category for this topic, feel free to let me know if so\] Are there people involved with blockchain development? Not limited to cryptocurrency and financial transac…

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## [How do I set up Gurobi solver for JuMP with Web License Service (WLS) license?](https://discourse.julialang.org/t/how-do-i-set-up-gurobi-solver-for-jump-with-web-license-service-wls-license/131409)

<div class="topic-metadata">

**Author:** [@leonie25](https://discourse.julialang.org/u/leonie25)\
**Replies:** 6\
**Last updated:** [August 7, 2025, 2:20am UTC](https://discourse.julialang.org/t/how-do-i-set-up-gurobi-solver-for-jump-with-web-license-service-wls-license/131409 "2025-08-07T02:20:22Z")

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How do I set up Gurobi solver for JuMP with Web License Service (WLS) license?

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## [An idea to explain a drastic difference in computation times for optimizing a JuMP model, and the unexpected ranking of solvers used?](https://discourse.julialang.org/t/an-idea-to-explain-a-drastic-difference-in-computation-times-for-optimizing-a-jump-model-and-the-unexpected-ranking-of-solvers-used/131253)

<div class="topic-metadata">

**Author:** [@XavierG](https://discourse.julialang.org/u/XavierG)\
**Replies:** 8\
**Last updated:** [August 6, 2025, 11:47pm UTC](https://discourse.julialang.org/t/an-idea-to-explain-a-drastic-difference-in-computation-times-for-optimizing-a-jump-model-and-the-unexpected-ranking-of-solvers-used/131253 "2025-08-06T23:47:11Z")

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I have to solve a basic parametric MILP.: \\begin{equation} \\begin{split} \\mbox{maximize} & \\quad \\alpha \\\\ \\mbox{s.t.} & \\quad \\alpha \\leq - \\lambda\_j(\\psi)(r\_{\*j} - z\_j(x)), \\,\\, j=1,\\dots,d \\\\ & \\qua…

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## [Julia crashed when using Gurobi](https://discourse.julialang.org/t/julia-crashed-when-using-gurobi/131402)

<div class="topic-metadata">

**Author:** [@Z\_M](https://discourse.julialang.org/u/Z_M)\
**Replies:** 3\
**Last updated:** [August 6, 2025, 11:45pm UTC](https://discourse.julialang.org/t/julia-crashed-when-using-gurobi/131402 "2025-08-06T23:45:12Z")

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I used JuMP and use Gurobi. But julia crashed, and the log is as follows: Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks. Exception: EXCEPT…

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