# Latest

**URL:** https://discourse.julialang.org/latest.md?page=91

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

**Page:** 92

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## [How to couple different wind farm models?](https://discourse.julialang.org/t/how-to-couple-different-wind-farm-models/133464)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 0\
**Last updated:** [October 27, 2025, 5:08pm UTC](https://discourse.julialang.org/t/how-to-couple-different-wind-farm-models/133464 "2025-10-27T17:08:10Z")

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We are brainstorming how to best couple different scale models, e.g., fast small-scale models with meso-scale models, for example, Floridyn.jl with a Julia version of TFSO-software / WAYVE · GitLab . I guess both models…

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## [Different running performance in parallelization of Threads](https://discourse.julialang.org/t/different-running-performance-in-parallelization-of-threads/133397)

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**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 22\
**Last updated:** [October 27, 2025, 5:07pm UTC](https://discourse.julialang.org/t/different-running-performance-in-parallelization-of-threads/133397 "2025-10-27T17:07:21Z")

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Hi Guys, I am running a model which use a for-loop to run on 17 independently different sites. Each site does not share memory with each other. But all of the inputs for 17 sites are collected in a list, of which the el…

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## [Using R and JuliaCall is not reliable without assigning R environment variables before starting R](https://discourse.julialang.org/t/using-r-and-juliacall-is-not-reliable-without-assigning-r-environment-variables-before-starting-r/133445)

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**Author:** [@RobertDorazio](https://discourse.julialang.org/u/RobertDorazio)\
**Replies:** 6\
**Last updated:** [October 27, 2025, 4:36pm UTC](https://discourse.julialang.org/t/using-r-and-juliacall-is-not-reliable-without-assigning-r-environment-variables-before-starting-r/133445 "2025-10-27T16:36:22Z")

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Suppose the file “sourceCode.R” contains an R script that calls a Julia function using julia\_call(), which is defined in the R package JuliaCall. If R is started in a Linux terminal using the command “R”, then the R com…

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## [Latex2text alternative?](https://discourse.julialang.org/t/latex2text-alternative/133460)

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**Author:** [@Joris\_Pinkse](https://discourse.julialang.org/u/Joris_Pinkse)\
**Replies:** 0\
**Last updated:** [October 27, 2025, 3:23pm UTC](https://discourse.julialang.org/t/latex2text-alternative/133460 "2025-10-27T15:23:14Z")

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I’m using for a pure Julia implementation of pylatexenc’s latex2text. I have found many wonderful LaTeX-adjacent Julia packages but none that provide that functionality. Any ideas other than calling latex2text from Jul…

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## [Using @ref with explicit signatures](https://discourse.julialang.org/t/using-ref-with-explicit-signatures/133444)

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**Author:** [@andreasvarga](https://discourse.julialang.org/u/andreasvarga)\
**Replies:** 6\
**Last updated:** [October 27, 2025, 1:25pm UTC](https://discourse.julialang.org/t/using-ref-with-explicit-signatures/133444 "2025-10-27T13:25:12Z")

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In the FaultDetectionTools package I have two functions called emmsyn with the distinct signatures: julia\> methods(emmsyn) # 2 methods for generic function "emmsyn" from FaultDetectionTools: \[1\] emmsyn(sysf::FDIModel{…

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## [Robust resampling/interpolation method](https://discourse.julialang.org/t/robust-resampling-interpolation-method/132665)

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**Author:** [@langestefan](https://discourse.julialang.org/u/langestefan)\
**Replies:** 25\
**Last updated:** [October 27, 2025, 1:15pm UTC](https://discourse.julialang.org/t/robust-resampling-interpolation-method/132665 "2025-10-27T13:15:54Z")

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I am working on a system identification problem with poor quality input data. The data describes a heating system, with thermostat temperatures, thermal power inputs, supply/return water temperatures etc. Some issues w…

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## [JuliaLang Japan 2025 — Sat, Dec 13, 2025 (Tokyo)](https://discourse.julialang.org/t/julialang-japan-2025-sat-dec-13-2025-tokyo/133259)

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**Author:** [@mrkn](https://discourse.julialang.org/u/mrkn)\
**Replies:** 1\
**Last updated:** [October 27, 2025, 12:31pm UTC](https://discourse.julialang.org/t/julialang-japan-2025-sat-dec-13-2025-tokyo/133259 "2025-10-27T12:31:42Z")

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We are pleased to announce JuliaLang Japan 2025. Please save the date. Date: Saturday, December 13, 2025 (JST/UTC+9) Venue: Institute of Science Tokyo, Ookayama Campus (Meguro, Tokyo) Overview: Planned as the largest …

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## [Understanding behavior of function extension in 1.12](https://discourse.julialang.org/t/understanding-behavior-of-function-extension-in-1-12/133451)

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**Author:** [@hexaeder](https://discourse.julialang.org/u/hexaeder)\
**Replies:** 3\
**Last updated:** [October 27, 2025, 11:33am UTC](https://discourse.julialang.org/t/understanding-behavior-of-function-extension-in-1-12/133451 "2025-10-27T11:33:40Z")

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In one of my packages i get the following warning: ┌ GraphMakie │ WARNING: Constructor for type "Pointf" was extended in \`GraphMakie\` without explicit qualification or import. │ NOTE: Assumed "Pointf" refers to \`Geo…

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## [Interactive prototyping workflows](https://discourse.julialang.org/t/interactive-prototyping-workflows/133265)

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**Author:** [@kousu](https://discourse.julialang.org/u/kousu)\
**Replies:** 41\
**Last updated:** [October 27, 2025, 10:26am UTC](https://discourse.julialang.org/t/interactive-prototyping-workflows/133265 "2025-10-27T10:26:00Z")

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Hi all, I’m writing data analysis scripts. Their form is usually like: using Plots, XLSX, DataFrames # load some data # drop mangled parts # calculate some statistics # plot some stuff plot(x, y, title="....", …

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## [VS Code to automatically start with the Julia REPL running](https://discourse.julialang.org/t/vs-code-to-automatically-start-with-the-julia-repl-running/133448)

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**Author:** [@askvorts](https://discourse.julialang.org/u/askvorts)\
**Replies:** 1\
**Last updated:** [October 27, 2025, 9:26am UTC](https://discourse.julialang.org/t/vs-code-to-automatically-start-with-the-julia-repl-running/133448 "2025-10-27T09:26:47Z")

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Is it possible to configure VS Code to automatically start with the Julia REPL running in its integrated terminal?

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## [Parametric struct without specifying type parameters](https://discourse.julialang.org/t/parametric-struct-without-specifying-type-parameters/133418)

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**Author:** [@johnomotani](https://discourse.julialang.org/u/johnomotani)\
**Replies:** 4\
**Last updated:** [October 27, 2025, 9:01am UTC](https://discourse.julialang.org/t/parametric-struct-without-specifying-type-parameters/133418 "2025-10-27T09:01:32Z")

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Maybe it’s a bad pattern (opinions?), but I somewhat frequently find myself creating structs to hold many parameters, where each parameter might have a couple of types and as the struct is only used within my own code, I…

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## [Optimization with AD of complex struct-based architecture](https://discourse.julialang.org/t/optimization-with-ad-of-complex-struct-based-architecture/133436)

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**Author:** [@stevenhughes](https://discourse.julialang.org/u/stevenhughes)\
**Replies:** 3\
**Last updated:** [October 27, 2025, 7:44am UTC](https://discourse.julialang.org/t/optimization-with-ad-of-complex-struct-based-architecture/133436 "2025-10-27T07:44:15Z")

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Hi everyone, I’m working on adding automatic differentiation to an optimization framework and running into some fundamental architectural issues. The framework uses a Directed Acyclic Graph modeled after Fig. 7 in this …

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## [Solving SemilinearODE without using automatic differentiation](https://discourse.julialang.org/t/solving-semilinearode-without-using-automatic-differentiation/133434)

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**Author:** [@sanjeev](https://discourse.julialang.org/u/sanjeev)\
**Replies:** 4\
**Last updated:** [October 27, 2025, 2:10am UTC](https://discourse.julialang.org/t/solving-semilinearode-without-using-automatic-differentiation/133434 "2025-10-27T02:10:13Z")

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I have semilinear ODE with the time-dependent linear implicit part as function f1! So, instead of solving (I - γΔt \* J₁) \* u\_{n+1} = rhs, I want to use Krylov method to solve (I - γΔt \* J1) \* u\_{n+1} = rhs, where J1 \* u…

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## [Value Dispatch Macro](https://discourse.julialang.org/t/value-dispatch-macro/133435)

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**Author:** [@csvance](https://discourse.julialang.org/u/csvance)\
**Replies:** 4\
**Last updated:** [October 26, 2025, 8:57pm UTC](https://discourse.julialang.org/t/value-dispatch-macro/133435 "2025-10-26T20:57:07Z")

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I’ve been messing around with the idea of streamlining dynamic dispatch on values for non hot path / glue code. The pattern is for multiple dispatch to dispatch to a function I define with a macro based on the known type…

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## [Numeric stability of Base.exp of static matrix of Float32](https://discourse.julialang.org/t/numeric-stability-of-base-exp-of-static-matrix-of-float32/133389)

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**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 12\
**Last updated:** [October 26, 2025, 7:46pm UTC](https://discourse.julialang.org/t/numeric-stability-of-base-exp-of-static-matrix-of-float32/133389 "2025-10-26T19:46:53Z")

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Guys, I want to use Base.exp in my model which uses Float32 with StaticArray and StaticVector. However, I found there is a numerical instability of Base.exp with the 3\*3 matrix…see the example above: using StaticArrays…

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## [Export makie figure object to file](https://discourse.julialang.org/t/export-makie-figure-object-to-file/84160)

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**Author:** [@Thomberger](https://discourse.julialang.org/u/Thomberger)\
**Replies:** 4\
**Last updated:** [October 26, 2025, 3:30pm UTC](https://discourse.julialang.org/t/export-makie-figure-object-to-file/84160 "2025-10-26T15:30:03Z")

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Is it possible to export a makie figure to a file, so later i can just load the file to recreate the figure and do not need to import my data, make all the computation required and finally plot it again ? I don’t want t…

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## [ModelingToolKit and the number pi](https://discourse.julialang.org/t/modelingtoolkit-and-the-number-pi/132543)

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**Author:** [@ziolai](https://discourse.julialang.org/u/ziolai)\
**Replies:** 5\
**Last updated:** [October 26, 2025, 9:44am UTC](https://discourse.julialang.org/t/modelingtoolkit-and-the-number-pi/132543 "2025-10-26T09:44:37Z")

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I am likely misunderstanding the issue below. The issues, however, of ModelingToolkit not liking pi reported previously at Discretization of semi-coupled wave and diffusion equations fails for step size of pi/(25n) usin…

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## [Status of geodesy packages in Julia (DGGS experiments)](https://discourse.julialang.org/t/status-of-geodesy-packages-in-julia-dggs-experiments/133379)

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**Author:** [@allixender](https://discourse.julialang.org/u/allixender)\
**Replies:** 12\
**Last updated:** [October 25, 2025, 10:27am UTC](https://discourse.julialang.org/t/status-of-geodesy-packages-in-julia-dggs-experiments/133379 "2025-10-25T10:27:13Z")

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Hi all, I would like to instigate a short review discussion on geodesy-related packages in Julia. My background is GIS, geospatial, and recently Discrete Global Grid Systems (DGGS) in particular. If you have heard of Ub…

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## [Understanding and optimizing Enzyme.jl Reverse AD on CUDA](https://discourse.julialang.org/t/understanding-and-optimizing-enzyme-jl-reverse-ad-on-cuda/133357)

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**Author:** [@Riccardo\_Buscicchio](https://discourse.julialang.org/u/Riccardo_Buscicchio)\
**Replies:** 5\
**Last updated:** [October 25, 2025, 7:36am UTC](https://discourse.julialang.org/t/understanding-and-optimizing-enzyme-jl-reverse-ad-on-cuda/133357 "2025-10-25T07:36:54Z")

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Hi all, we are working on a nested sampling algorithm whose proposals are assisted by HMC, and we want to leverage Enzyme.jl to autodiff our loglikelihood kernel. We have a MWE on a simple 4D gaussian likelihood (4 par…

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## [Julia crashes without reporting anything when I optimize a vector of models in parallel](https://discourse.julialang.org/t/julia-crashes-without-reporting-anything-when-i-optimize-a-vector-of-models-in-parallel/131801)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 22\
**Last updated:** [October 25, 2025, 1:55am UTC](https://discourse.julialang.org/t/julia-crashes-without-reporting-anything-when-i-optimize-a-vector-of-models-in-parallel/131801 "2025-10-25T01:55:47Z")

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My setting is julia\> Threads.nthreads() 4 I can’t figure out what is happening here. The behavior is julia\> parallel\_CG!(B, θ, β, μ, ν) ┌ Info: before entering @threads │ sub\_j\_vec = │ 4-element Vector{Int64}: │ …

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## [Modeling Toolkit with ∇c · ∇Φ\_2 Term](https://discourse.julialang.org/t/modeling-toolkit-with-c-2-term/133180)

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**Author:** [@nickbrady](https://discourse.julialang.org/u/nickbrady)\
**Replies:** 4\
**Last updated:** [October 24, 2025, 10:44pm UTC](https://discourse.julialang.org/t/modeling-toolkit-with-c-2-term/133180 "2025-10-24T22:44:38Z")

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I am trying to solve a system of PDE in the ModelingToolkit. I can solve the unsteady heat equation for multiple species and for Neumann and Dirichlet boundary conditions, see MWE. However, I am looking to solve more co…

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## [Graphviz running but not printing](https://discourse.julialang.org/t/graphviz-running-but-not-printing/133394)

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**Author:** [@aidanpetro1](https://discourse.julialang.org/u/aidanpetro1)\
**Replies:** 4\
**Last updated:** [October 24, 2025, 7:26pm UTC](https://discourse.julialang.org/t/graphviz-running-but-not-printing/133394 "2025-10-24T19:26:40Z")

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Hey, I’m trying to run the code below in VS code. I have graphviz installed and have the Julia graphviz pkg installed as well. The code runs without errors besides the graphviz part which gives the below error. using C…

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## [Looking for Background Information on the Creation of the JuliaCon Proceedings](https://discourse.julialang.org/t/looking-for-background-information-on-the-creation-of-the-juliacon-proceedings/133330)

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**Author:** [@roflmaostc](https://discourse.julialang.org/u/roflmaostc)\
**Replies:** 3\
**Last updated:** [October 24, 2025, 6:44pm UTC](https://discourse.julialang.org/t/looking-for-background-information-on-the-creation-of-the-juliacon-proceedings/133330 "2025-10-24T18:44:45Z")

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Hi! I am thinking about the question how hard it is to create a new conference proceeding for an existing conference venue. Would anyone of the JuliaCon Proceedings people able to comment a bit? Like I am interested in…

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## [Issue using ModelingToolkit to simulate electrical circuits](https://discourse.julialang.org/t/issue-using-modelingtoolkit-to-simulate-electrical-circuits/133415)

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**Author:** [@JaviJR](https://discourse.julialang.org/u/JaviJR)\
**Replies:** 7\
**Last updated:** [October 24, 2025, 5:40pm UTC](https://discourse.julialang.org/t/issue-using-modelingtoolkit-to-simulate-electrical-circuits/133415 "2025-10-24T17:40:28Z")

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Hello everyone, Lately, I have been working quite extensively with ModelingToolkit, particularly migrating some dynamic control models that I had previously implemented in various closed-source programs (often achieving…

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## [Is it possible to use structural\_parameters as an argument of \`System\` in ModelingToolkit?](https://discourse.julialang.org/t/is-it-possible-to-use-structural-parameters-as-an-argument-of-system-in-modelingtoolkit/133396)

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**Author:** [@pmc4](https://discourse.julialang.org/u/pmc4)\
**Replies:** 6\
**Last updated:** [October 24, 2025, 4:15pm UTC](https://discourse.julialang.org/t/is-it-possible-to-use-structural-parameters-as-an-argument-of-system-in-modelingtoolkit/133396 "2025-10-24T16:15:21Z")

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Hello everyone. When building a model in ModelingToolkit, there is the option of doing it with the macro @mtkmodel. Inside the macro, we can define structural parameters for defining numerical variables. For example, co…

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## [Method Error when using Method of Lines to solve PDEs](https://discourse.julialang.org/t/method-error-when-using-method-of-lines-to-solve-pdes/132951)

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**Author:** [@gst1017](https://discourse.julialang.org/u/gst1017)\
**Replies:** 3\
**Last updated:** [October 24, 2025, 3:52pm UTC](https://discourse.julialang.org/t/method-error-when-using-method-of-lines-to-solve-pdes/132951 "2025-10-24T15:52:53Z")

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Hello all! I’m new to Julia and am trying to use the Method of Lines and MTK packages to solve a system of PDEs. I am running into repeated method errors, and the stacktrace keeps pointing to a line from Macro Expanded c…

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## [How to properly set aspect for Axis defined in multiple fig positions in Makie](https://discourse.julialang.org/t/how-to-properly-set-aspect-for-axis-defined-in-multiple-fig-positions-in-makie/133216)

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**Author:** [@albertomercurio](https://discourse.julialang.org/u/albertomercurio)\
**Replies:** 7\
**Last updated:** [October 24, 2025, 1:38pm UTC](https://discourse.julialang.org/t/how-to-properly-set-aspect-for-axis-defined-in-multiple-fig-positions-in-makie/133216 "2025-10-24T13:38:33Z")

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Hello, I have the following figure structure fig = Figure() ax1 = Axis(fig\[1,1\]) ax2 = Axis(fig\[1,2\]) ax3 = Axis(fig\[2,1\]) ax4 = Axis(fig\[2,2\]) ax5 = Axis(fig\[1:2,3\]) colsize!(fig.layout, 3, Relative(0.6)) fig where…

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## [Training of a universal differential equation on multiple initial states and mini-batches](https://discourse.julialang.org/t/training-of-a-universal-differential-equation-on-multiple-initial-states-and-mini-batches/132174)

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**Author:** [@Xhemal\_Kodragjini](https://discourse.julialang.org/u/Xhemal_Kodragjini)\
**Replies:** 1\
**Last updated:** [October 24, 2025, 1:20pm UTC](https://discourse.julialang.org/t/training-of-a-universal-differential-equation-on-multiple-initial-states-and-mini-batches/132174 "2025-10-24T13:20:07Z")

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Hi, I am training a UDE controlled by an input signal as part of my thesis. To be able to get a more generalized neural network on multiple data, I want to train on around 1000 different initial states and use mini-batc…

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## [Problems when replacing Flux by Lux in anodes example](https://discourse.julialang.org/t/problems-when-replacing-flux-by-lux-in-anodes-example/133120)

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**Author:** [@Jaime\_Araneda](https://discourse.julialang.org/u/Jaime_Araneda)\
**Replies:** 1\
**Last updated:** [October 24, 2025, 1:19pm UTC](https://discourse.julialang.org/t/problems-when-replacing-flux-by-lux-in-anodes-example/133120 "2025-10-24T13:19:21Z")

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Hello, I’m trying to reproduce the anodes example on augmented neural ODEs from the thread Fitting neural ODE to periodic time series. However, when replacing Flux by the Lux library (with the corresponding changes) I g…

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## [How to ignore minibatches with NaN gradients optimizing a hybrid LUX model using Optimization.jl](https://discourse.julialang.org/t/how-to-ignore-minibatches-with-nan-gradients-optimizing-a-hybrid-lux-model-using-optimization-jl/132615)

<div class="topic-metadata">

**Author:** [@progtw1](https://discourse.julialang.org/u/progtw1)\
**Replies:** 1\
**Last updated:** [October 24, 2025, 1:17pm UTC](https://discourse.julialang.org/t/how-to-ignore-minibatches-with-nan-gradients-optimizing-a-hybrid-lux-model-using-optimization-jl/132615 "2025-10-24T13:17:45Z")

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I try following the LUX tutorial on fitting an ML model using Optimization.jl for fitting a hybrid model, where the LUX model predicts some parameters of a process-based model, the LUX model application is just a call in…

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