# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=22

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**Page:** 23

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## [Visual connection between different axes in Makie.jl](https://discourse.julialang.org/t/visual-connection-between-different-axes-in-makie-jl/116535)

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**Author:** [@albertomercurio](https://discourse.julialang.org/u/albertomercurio)\
**Replies:** 11\
**Last updated:** [October 21, 2025, 3:10pm UTC](https://discourse.julialang.org/t/visual-connection-between-different-axes-in-makie-jl/116535 "2025-10-21T15:10:54Z")

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Hello, I have a figure generated with CairoMakie.jl. This figure contains two axes, something like fig = Figure(size=(380, 220)) ax1 = Axis(fig\[1, 1\]) ax2 = Axis(fig\[2, 1\]) Now, I want to draw some lines (or even …

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## [Trixi.jl unable to convert elixir\_advection\_diffusion.jl 2d example into 1d example](https://discourse.julialang.org/t/trixi-jl-unable-to-convert-elixir-advection-diffusion-jl-2d-example-into-1d-example/133305)

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**Author:** [@mra](https://discourse.julialang.org/u/mra)\
**Replies:** 3\
**Last updated:** [October 21, 2025, 2:12pm UTC](https://discourse.julialang.org/t/trixi-jl-unable-to-convert-elixir-advection-diffusion-jl-2d-example-into-1d-example/133305 "2025-10-21T14:12:04Z")

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I am trying to create working 1d advection diffusion example with boundaries. I have first modified slightly code from Trixi.jl/examples/dgmulti\_2d/elixir\_advection\_diffusion.jl at main · trixi-framework/Trixi.jl and con…

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## [MethodofLines - Staggered Grids - MethodError by function discretize()](https://discourse.julialang.org/t/methodoflines-staggered-grids-methoderror-by-function-discretize/133312)

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**Author:** [@ziolai](https://discourse.julialang.org/u/ziolai)\
**Replies:** 0\
**Last updated:** [October 20, 2025, 4:57pm UTC](https://discourse.julialang.org/t/methodoflines-staggered-grids-methoderror-by-function-discretize/133312 "2025-10-20T16:57:20Z")

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Greetings, The tutorial example on staggered grids at staggered results in the method error MethodError: no method matching view(::Nothing, ::UnitRange{Int64}) The function \`view\` exists, but no method is defined for t…

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## [Dynamic Type in CxxWrap.jl](https://discourse.julialang.org/t/dynamic-type-in-cxxwrap-jl/133007)

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**Author:** [@phK3](https://discourse.julialang.org/u/phK3)\
**Replies:** 1\
**Last updated:** [October 20, 2025, 9:56am UTC](https://discourse.julialang.org/t/dynamic-type-in-cxxwrap-jl/133007 "2025-10-20T09:56:31Z")

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I want to use CxxWrap.jl to create a Julia wrapper for a C++ library. On the Julia side, I want to dispatch on the type of my arguments. But when using CxxWrap, the Julia side only seems to know about the static return…

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## [How can I stop a Gurobi solve in JuMP in real time (like Ctrl+C) and still keep the solution?](https://discourse.julialang.org/t/how-can-i-stop-a-gurobi-solve-in-jump-in-real-time-like-ctrl-c-and-still-keep-the-solution/132841)

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**Author:** [@amit\_97](https://discourse.julialang.org/u/amit_97)\
**Replies:** 11\
**Last updated:** [October 20, 2025, 1:47am UTC](https://discourse.julialang.org/t/how-can-i-stop-a-gurobi-solve-in-jump-in-real-time-like-ctrl-c-and-still-keep-the-solution/132841 "2025-10-20T01:47:50Z")

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I am using JuMP with Gurobi.jl to solve a MIP. In Julia, pressing Ctrl+C usually kills the entire Julia process instead of just stopping Gurobi. My goal is: Stop the optimization at any arbitrary time (not using MIPG…

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## [Computing Steady State With Known Constraints](https://discourse.julialang.org/t/computing-steady-state-with-known-constraints/132489)

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**Author:** [@Aviv\_Barnea](https://discourse.julialang.org/u/Aviv_Barnea)\
**Replies:** 5\
**Last updated:** [October 19, 2025, 6:51pm UTC](https://discourse.julialang.org/t/computing-steady-state-with-known-constraints/132489 "2025-10-19T18:51:10Z")

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Hi, new to ModelingToolkit.jl, and trying to port some models in Nuclear Reactor computations. So here’s the simplest model (point reactor) I wrote: using ModelingToolkit, Plots, OrdinaryDiffEq using ModelingToolkit: t\_…

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## [Constraints in the Genetic Algorithm implemented in \`Metaheuristics.jl\`](https://discourse.julialang.org/t/constraints-in-the-genetic-algorithm-implemented-in-metaheuristics-jl/123628)

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**Author:** [@AkchurinDA](https://discourse.julialang.org/u/AkchurinDA)\
**Replies:** 7\
**Last updated:** [October 19, 2025, 12:48pm UTC](https://discourse.julialang.org/t/constraints-in-the-genetic-algorithm-implemented-in-metaheuristics-jl/123628 "2025-10-19T12:48:51Z")

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Opening a fresh thread based on the recommendation from @pierre-haessig. My original question was: How does the Genetic Algorithm implemented in Metaheuristics.jl “penalize” the objective function for not satisfying th…

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## [Lotka Volterra Neural ODE](https://discourse.julialang.org/t/lotka-volterra-neural-ode/133159)

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**Author:** [@Aditya\_Deshpande](https://discourse.julialang.org/u/Aditya_Deshpande)\
**Replies:** 5\
**Last updated:** [October 19, 2025, 9:36am UTC](https://discourse.julialang.org/t/lotka-volterra-neural-ode/133159 "2025-10-19T09:36:47Z")

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Hello All, Just started learning about neural ODEs, i was trying to solve the Lotka Volterra equation using neural ODE. here is my code using JLD, Lux, DiffEqFlux, DifferentialEquations, Optimization, OptimizationOpt…

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## [Error in oneAPI.jl tests](https://discourse.julialang.org/t/error-in-oneapi-jl-tests/133252)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 3\
**Last updated:** [October 18, 2025, 9:01pm UTC](https://discourse.julialang.org/t/error-in-oneapi-jl-tests/133252 "2025-10-18T21:01:34Z")

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I want to use oneAPI.jl as i have Intel GPU integrated in CPU: 14 × Intel(R) Core™ Ultra 7 155U. I am using Manjaro Linux (x86\_64-linux-gnu). On running tests i got errors. pkg\> test oneAPI ▶ Error output Is there any…

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## [Heatmap! in GeoMakie](https://discourse.julialang.org/t/heatmap-in-geomakie/133249)

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**Author:** [@mreichMPI-BGC](https://discourse.julialang.org/u/mreichMPI-BGC)\
**Replies:** 3\
**Last updated:** [October 18, 2025, 1:32pm UTC](https://discourse.julialang.org/t/heatmap-in-geomakie/133249 "2025-10-18T13:32:02Z")

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The projection in heatmap! does not seem to work (using GeoMAkie 0.7.15), the example using GeoMakie, GLMakie lons = -180:180 lats = -90:90 field = \[exp(cosd(l)) + 3(y/90) for l in lons, y in lats\] fig = Figure() ax = G…

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## [Adjoint sensitivities for non-numeric types in ModelingToolkit.jl](https://discourse.julialang.org/t/adjoint-sensitivities-for-non-numeric-types-in-modelingtoolkit-jl/132082)

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**Author:** [@mxp](https://discourse.julialang.org/u/mxp)\
**Replies:** 2\
**Last updated:** [October 17, 2025, 4:51pm UTC](https://discourse.julialang.org/t/adjoint-sensitivities-for-non-numeric-types-in-modelingtoolkit-jl/132082 "2025-10-17T16:51:26Z")

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I’d like to use non-numeric types in ModelingToolkit.jl, but with adjoint sensitivities. When using DifferentialEquations.jl there is support for this through SciMLStructures.jl as described here. So I assumed this would…

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## [Identification using LowLevelParticleFilters.jl](https://discourse.julialang.org/t/identification-using-lowlevelparticlefilters-jl/132393)

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**Author:** [@langestefan](https://discourse.julialang.org/u/langestefan)\
**Replies:** 19\
**Last updated:** [October 17, 2025, 1:04pm UTC](https://discourse.julialang.org/t/identification-using-lowlevelparticlefilters-jl/132393 "2025-10-17T13:04:10Z")

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I am looking for an example (or some guidance) on how to fit a Kalman smoother to data using log-likelihood maximization using LowLevelParticleFilters.jl. I already have a model structure and have collected a dataset. I…

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## [Any solution for float 32 required by lux models embeded in Turing.jl](https://discourse.julialang.org/t/any-solution-for-float-32-required-by-lux-models-embeded-in-turing-jl/133202)

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**Author:** [@imantha](https://discourse.julialang.org/u/imantha)\
**Replies:** 3\
**Last updated:** [October 17, 2025, 11:25am UTC](https://discourse.julialang.org/t/any-solution-for-float-32-required-by-lux-models-embeded-in-turing-jl/133202 "2025-10-17T11:25:44Z")

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Hi I have trained Variational Autoencoder from Lux.jl embeded inside a Turing.jl model. But I am unable to convert a latent variable to float32 to pass it through Lux.jl model to get its ouput. I saw a post here (Issue w…

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## [ModelingToolkit problem generation errors for array-valued parameters with Measurements](https://discourse.julialang.org/t/modelingtoolkit-problem-generation-errors-for-array-valued-parameters-with-measurements/133210)

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**Author:** [@bspanoghe](https://discourse.julialang.org/u/bspanoghe)\
**Replies:** 1\
**Last updated:** [October 17, 2025, 9:27am UTC](https://discourse.julialang.org/t/modelingtoolkit-problem-generation-errors-for-array-valued-parameters-with-measurements/133210 "2025-10-17T09:27:02Z")

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I’ve been running into errors trying to use Measurements.jl combined with ModelingToolkit.jl when there’s array-valued parameters involved. Consider the following toy problem: using ModelingToolkit, Measurements import …

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## [Problems installing Agents under v1.12.0](https://discourse.julialang.org/t/problems-installing-agents-under-v1-12-0/133215)

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**Author:** [@Niall](https://discourse.julialang.org/u/Niall)\
**Replies:** 4\
**Last updated:** [October 17, 2025, 4:42am UTC](https://discourse.julialang.org/t/problems-installing-agents-under-v1-12-0/133215 "2025-10-17T04:42:06Z")

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Hi. I’ve just returned to julia after absence and have installed version 1.12.0. I now have problems installing and loading a set of 8 packages relating to Agents. Here is the Pkg output: (@v1.12) pkg\> up Agents Upd…

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## [Bad GeoMakie axes for aeqd](https://discourse.julialang.org/t/bad-geomakie-axes-for-aeqd/133155)

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**Author:** [@AMB](https://discourse.julialang.org/u/AMB)\
**Replies:** 3\
**Last updated:** [October 16, 2025, 11:07pm UTC](https://discourse.julialang.org/t/bad-geomakie-axes-for-aeqd/133155 "2025-10-16T23:07:29Z")

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I’m not sure how much is reasonable to expect from GeoMakie across all the “supported” projections. For instance, is the rendering of the axes in this aeqd visualization a bug or is it just not practical for all of GeoMa…

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## [Trying to run the Transformers'.jl copy task demo - errors](https://discourse.julialang.org/t/trying-to-run-the-transformers-jl-copy-task-demo-errors/133208)

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**Author:** [@roeya](https://discourse.julialang.org/u/roeya)\
**Replies:** 0\
**Last updated:** [October 16, 2025, 2:36pm UTC](https://discourse.julialang.org/t/trying-to-run-the-transformers-jl-copy-task-demo-errors/133208 "2025-10-16T14:36:48Z")

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Does this package is still supported? I see it is not compatible with new Flux.jl 0.16.X and the copy task in the documentation is not working as it is written someone can help with this?

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## [Overdetermined system when using modelingtoolkitize](https://discourse.julialang.org/t/overdetermined-system-when-using-modelingtoolkitize/132917)

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**Author:** [@jessehummel](https://discourse.julialang.org/u/jessehummel)\
**Replies:** 2\
**Last updated:** [October 15, 2025, 4:00pm UTC](https://discourse.julialang.org/t/overdetermined-system-when-using-modelingtoolkitize/132917 "2025-10-15T16:00:00Z")

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Hi, I would like to convert a numeric differential-algebraic equation to a symbolic model using modelingtoolkitize. However, when then trying to convert it back to an ODEProblem, I get an overdetermined warning and when …

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## [Default sampler for mixed continuous/discrete parameters in Turing.jl](https://discourse.julialang.org/t/default-sampler-for-mixed-continuous-discrete-parameters-in-turing-jl/132874)

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**Author:** [@sdwfrost](https://discourse.julialang.org/u/sdwfrost)\
**Replies:** 2\
**Last updated:** [October 15, 2025, 7:46am UTC](https://discourse.julialang.org/t/default-sampler-for-mixed-continuous-discrete-parameters-in-turing-jl/132874 "2025-10-15T07:46:13Z")

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I’m fitting a Turing.jl model with continuous and discrete variables. Using MH() works out of the box. What’s going on under the hood here in terms of samplers and proposals? Any tips on how to tune would be great. My m…

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## [\[AdvancedHMC\] Implementation of Custom HMCKernel](https://discourse.julialang.org/t/advancedhmc-implementation-of-custom-hmckernel/132664)

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**Author:** [@sample\_slice\_of\_life](https://discourse.julialang.org/u/sample_slice_of_life)\
**Replies:** 1\
**Last updated:** [October 15, 2025, 7:37am UTC](https://discourse.julialang.org/t/advancedhmc-implementation-of-custom-hmckernel/132664 "2025-10-15T07:37:31Z")

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Hello all, I am a student researching possible extensions of HMC-type samplers for settings in which posteriors exhibit high correlation between parameters. I have a working implementation of a code for a toy problem i…

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## [Julia implementation of Liquid Neural Networks - anyone wanna help make one?](https://discourse.julialang.org/t/julia-implementation-of-liquid-neural-networks-anyone-wanna-help-make-one/100953)

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**Author:** [@afishy](https://discourse.julialang.org/u/afishy)\
**Replies:** 6\
**Last updated:** [October 14, 2025, 11:38pm UTC](https://discourse.julialang.org/t/julia-implementation-of-liquid-neural-networks-anyone-wanna-help-make-one/100953 "2025-10-14T23:38:59Z")

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Following a thread on machine-learning on Julia slack, i’m interested in putting together a Julia implementation of “Liquid Neural Networks”. These are time-adaptive neural networks, inspired by neuroscience models, wher…

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## [Help understanding non-mutating function in Lux.Training](https://discourse.julialang.org/t/help-understanding-non-mutating-function-in-lux-training/133137)

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**Author:** [@IBArbitrary](https://discourse.julialang.org/u/IBArbitrary)\
**Replies:** 1\
**Last updated:** [October 14, 2025, 6:36pm UTC](https://discourse.julialang.org/t/help-understanding-non-mutating-function-in-lux-training/133137 "2025-10-14T18:36:49Z")

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The Training.apply\_gradient non-mutating function is implemented as below in Lux.jl: function apply\_gradients(ts::TrainState, grads) optimizer\_state, ps = Optimisers.update(ts.optimizer\_state, ts.parameters, grads) …

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## [Collision checking for RigidBodyDynamics: AI coding agents experiment](https://discourse.julialang.org/t/collision-checking-for-rigidbodydynamics-ai-coding-agents-experiment/133136)

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**Author:** [@Lukasz\_Juszkiewicz](https://discourse.julialang.org/u/Lukasz_Juszkiewicz)\
**Replies:** 0\
**Last updated:** [October 14, 2025, 10:57am UTC](https://discourse.julialang.org/t/collision-checking-for-rigidbodydynamics-ai-coding-agents-experiment/133136 "2025-10-14T10:57:21Z")

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Recently, I read a lot how great AI coding agents are. I was little bit skeptical, but I thought it’s high time to give it a shot. Goal: develop something useful related to robotics without writing a single line of code…

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## [Coloring in JuMP with start values](https://discourse.julialang.org/t/coloring-in-jump-with-start-values/133106)

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**Author:** [@gdalle](https://discourse.julialang.org/u/gdalle)\
**Replies:** 7\
**Last updated:** [October 14, 2025, 12:47am UTC](https://discourse.julialang.org/t/coloring-in-jump-with-start-values/133106 "2025-10-14T00:47:59Z")

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Hi there, I am tinkering with an optimal coloring algorithm for sparse autodiff. Here is the most basic constraint programming formulation I could find for partial distance-2 column coloring. Problem statement: color a…

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## [Fitting neural ODE to periodic time series](https://discourse.julialang.org/t/fitting-neural-ode-to-periodic-time-series/42263)

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**Author:** [@SebastianCallh](https://discourse.julialang.org/u/SebastianCallh)\
**Replies:** 18\
**Last updated:** [October 13, 2025, 6:31pm UTC](https://discourse.julialang.org/t/fitting-neural-ode-to-periodic-time-series/42263 "2025-10-13T18:31:03Z")

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Hello, I am trying to fit a neural ODE adapted from an example in the docs to the Mauna Loa dataset. but am running in to some problems. Fitting the model to too many time steps at once causes it to underfit dramatical…

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## [How to manipulate gradients in Lux.jl](https://discourse.julialang.org/t/how-to-manipulate-gradients-in-lux-jl/133102)

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**Author:** [@IBArbitrary](https://discourse.julialang.org/u/IBArbitrary)\
**Replies:** 0\
**Last updated:** [October 13, 2025, 7:20am UTC](https://discourse.julialang.org/t/how-to-manipulate-gradients-in-lux-jl/133102 "2025-10-13T07:20:22Z")

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I am using Lux.jl, and I want to do algebra on the gradients before applying. Currently I convert them to ComponentArray and convert them back to NamedTuple after I do the necessary algebra. But this requires me to move …

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## [Minimizing losses in OPF](https://discourse.julialang.org/t/minimizing-losses-in-opf/81097)

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**Author:** [@gaadis](https://discourse.julialang.org/u/gaadis)\
**Replies:** 4\
**Last updated:** [October 13, 2025, 6:11am UTC](https://discourse.julialang.org/t/minimizing-losses-in-opf/81097 "2025-10-13T06:11:50Z")

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I have been working on a distribution system where I was minimizing the fuel cost in the objective function using \_PMD.solve\_mc\_opf. However, I currently switched my data to solar generated data using PV panels. This dat…

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## [Where is shader function "texture()" defined? (GLMakie.jl/volume())](https://discourse.julialang.org/t/where-is-shader-function-texture-defined-glmakie-jl-volume/133062)

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**Author:** [@hsgg](https://discourse.julialang.org/u/hsgg)\
**Replies:** 2\
**Last updated:** [October 12, 2025, 8:20pm UTC](https://discourse.julialang.org/t/where-is-shader-function-texture-defined-glmakie-jl-volume/133062 "2025-10-12T20:20:55Z")

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Hi, I am looking into implementing adaptive sampling for the GLMakie volume() visualizations. However, being new to OpenGL, I cannot find where the texture() function is defined. I believe the implementation of that func…

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## [DAE solve asking for an unreasonable amount of memory](https://discourse.julialang.org/t/dae-solve-asking-for-an-unreasonable-amount-of-memory/133051)

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**Author:** [@sanjeev](https://discourse.julialang.org/u/sanjeev)\
**Replies:** 5\
**Last updated:** [October 12, 2025, 5:45am UTC](https://discourse.julialang.org/t/dae-solve-asking-for-an-unreasonable-amount-of-memory/133051 "2025-10-12T05:45:49Z")

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I have a system of differential equations (DAE) I am solving using DifferentialEquations.jl . It works well when I have larger discretization (fewer points), but when I use smaller discretization, it asks for a lot of me…

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## [How to add \`PGFPlotsX.Coordinates()\` object to raw LaTeX command?](https://discourse.julialang.org/t/how-to-add-pgfplotsx-coordinates-object-to-raw-latex-command/133070)

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**Author:** [@tapyu](https://discourse.julialang.org/u/tapyu)\
**Replies:** 0\
**Last updated:** [October 11, 2025, 2:26pm UTC](https://discourse.julialang.org/t/how-to-add-pgfplotsx-coordinates-object-to-raw-latex-command/133070 "2025-10-11T14:26:48Z")

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\#!/usr/bin/env julia # using Pkg; Pkg.add("PGFPlotsX") # run once using PGFPlotsX empty!(PGFPlotsX.CUSTOM\_PREAMBLE) push!(PGFPlotsX.CUSTOM\_PREAMBLE, raw"\\usetikzlibrary{calc,spy}") origin = PGFPlotsX.Coordinate(0, 0)…

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