# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=18

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**Page:** 19

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## [NUTS mass matrix estimation and num\_warmup](https://discourse.julialang.org/t/nuts-mass-matrix-estimation-and-num-warmup/134046)

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**Author:** [@contejuz](https://discourse.julialang.org/u/contejuz)\
**Replies:** 7\
**Last updated:** [November 24, 2025, 8:12pm UTC](https://discourse.julialang.org/t/nuts-mass-matrix-estimation-and-num-warmup/134046 "2025-11-24T20:12:47Z")

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I have a distribution with a somewhat wide range of parameters in a hierarchical model. Some range are in \[0,1\], while another is in \[0,60\] roughly, with most mass around 20-30. a\_0 ~ Beta(8,2) b\_0 ~ truncated(Normal…

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## [Help with performance issue when upgrading CUDA](https://discourse.julialang.org/t/help-with-performance-issue-when-upgrading-cuda/134064)

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**Author:** [@jamesr137](https://discourse.julialang.org/u/jamesr137)\
**Replies:** 5\
**Last updated:** [November 24, 2025, 7:15pm UTC](https://discourse.julialang.org/t/help-with-performance-issue-when-upgrading-cuda/134064 "2025-11-24T19:15:13Z")

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Hi all. I have an issue that I’m hoping somebody on here can help me with. The issue is simple to state yet hard (at least for me) to diagnose, and it’s this: every time I try to upgrade to a version of CUDA past 5.5.2, …

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## [Is discourse the proper place to suggest improvements for ModelingToolkit?](https://discourse.julialang.org/t/is-discourse-the-proper-place-to-suggest-improvements-for-modelingtoolkit/134087)

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**Author:** [@NicholasHemenway](https://discourse.julialang.org/u/NicholasHemenway)\
**Replies:** 1\
**Last updated:** [November 24, 2025, 4:25pm UTC](https://discourse.julialang.org/t/is-discourse-the-proper-place-to-suggest-improvements-for-modelingtoolkit/134087 "2025-11-24T16:25:19Z")

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I’m relatively new to Julia and am currently learning ModelingToolkit. I have some suggestions that I believe would improve the documentation for newcomers but don’t know where to voice them. Is Discourse the proper aven…

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## [WGLMakie no longer working with jupyter](https://discourse.julialang.org/t/wglmakie-no-longer-working-with-jupyter/130331)

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**Author:** [@snowgum](https://discourse.julialang.org/u/snowgum)\
**Replies:** 5\
**Last updated:** [November 24, 2025, 3:35pm UTC](https://discourse.julialang.org/t/wglmakie-no-longer-working-with-jupyter/130331 "2025-11-24T15:35:59Z")

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I have some code with WGLMakie and Bonito for interactive visualisations. This used to work with Jupyter, but now any plot or figure shows nothing. The same code works fine with CairoMakie, GLMakie, or with WGLMakie insi…

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## [HiGHS instance and model when used in a shared library](https://discourse.julialang.org/t/highs-instance-and-model-when-used-in-a-shared-library/133823)

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**Author:** [@asprionj](https://discourse.julialang.org/u/asprionj)\
**Replies:** 7\
**Last updated:** [November 24, 2025, 9:29am UTC](https://discourse.julialang.org/t/highs-instance-and-model-when-used-in-a-shared-library/133823 "2025-11-24T09:29:26Z")

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I use JuMP.jl with HiGHS.jl to solve an optimisation problem, then generate a shared library for this using JuliaC.jl. The shared library is used within a larger software. It is loaded once (at startup), and then always …

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## [Visualization, maps, animation & history](https://discourse.julialang.org/t/visualization-maps-animation-history/134070)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 0\
**Last updated:** [November 24, 2025, 9:01am UTC](https://discourse.julialang.org/t/visualization-maps-animation-history/134070 "2025-11-24T09:01:51Z")

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I was playing with Google AI Studio in the week-end to see if I could understand some language/culture history. So I asked AI Studio to develop some Julia code for doing an animation of Indo-European spread. Here is a sn…

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## [Don't understand the results of cuOpt](https://discourse.julialang.org/t/dont-understand-the-results-of-cuopt/133707)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 4\
**Last updated:** [November 24, 2025, 7:02am UTC](https://discourse.julialang.org/t/dont-understand-the-results-of-cuopt/133707 "2025-11-24T07:02:12Z")

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julia\> import JuMP, cuOpt julia\> model = JuMP.Model(); julia\> JuMP.@variable(model, x \>= 0, Int); julia\> JuMP.@variable(model, 0 \<= y \<= 3); julia\> JuMP.@objective(model, Min, 12x + 20y); julia\> JuMP.@constraint(mod…

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## [Efficient way to implement multi-index nonlinear constraints in ExaModels? (PCE-expanded AC power flow)](https://discourse.julialang.org/t/efficient-way-to-implement-multi-index-nonlinear-constraints-in-examodels-pce-expanded-ac-power-flow/133934)

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**Author:** [@yanlingogo](https://discourse.julialang.org/u/yanlingogo)\
**Replies:** 4\
**Last updated:** [November 24, 2025, 4:24am UTC](https://discourse.julialang.org/t/efficient-way-to-implement-multi-index-nonlinear-constraints-in-examodels-pce-expanded-ac-power-flow/133934 "2025-11-24T04:24:44Z")

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Hi all, I’m implementing a PCE-expanded AC power flow model. In JuMP, one of my nonlinear constraints looks like: @constraint(opf, pfP\[i=1:n\_bus, k=1:K\], p\[i,k\] \* T2\_diag\[k\] == sum( (G\[i,j\]\*(E\[i…

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## [Getting an infeasibility certificate from Gurobi when solving hard LPs](https://discourse.julialang.org/t/getting-an-infeasibility-certificate-from-gurobi-when-solving-hard-lps/133639)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 8\
**Last updated:** [November 24, 2025, 1:52am UTC](https://discourse.julialang.org/t/getting-an-infeasibility-certificate-from-gurobi-when-solving-hard-lps/133639 "2025-11-24T01:52:23Z")

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I guess something is wrong with the barrier algorithm, but I have no expertise to read its logging. I log it here, don’t know if someone can have some explanations. (The whole logging has no Warning.) julia\> JuMP.opti…

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## [AssertionError in Gurobi.jl with OptimalityTarget = 1 on simple nonlinear model (Gurobi 13)](https://discourse.julialang.org/t/assertionerror-in-gurobi-jl-with-optimalitytarget-1-on-simple-nonlinear-model-gurobi-13/133948)

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**Author:** [@SingingKim](https://discourse.julialang.org/u/SingingKim)\
**Replies:** 4\
**Last updated:** [November 23, 2025, 7:47pm UTC](https://discourse.julialang.org/t/assertionerror-in-gurobi-jl-with-optimalitytarget-1-on-simple-nonlinear-model-gurobi-13/133948 "2025-11-23T19:47:40Z")

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Hi all, I’m getting an AssertionError when using Gurobi 13 through JuMP with a very small nonlinear model, but only when I set OptimalityTarget = 1. Minimal working example: using JuMP, Gurobi m = Model(Gurobi.Optimi…

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## [Density line chart method for Makie](https://discourse.julialang.org/t/density-line-chart-method-for-makie/134051)

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**Author:** [@ConnectedSystems](https://discourse.julialang.org/u/ConnectedSystems)\
**Replies:** 0\
**Last updated:** [November 22, 2025, 11:46pm UTC](https://discourse.julialang.org/t/density-line-chart-method-for-makie/134051 "2025-11-22T23:46:45Z")

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Not sure if this is against any rules but I want to cross-post this FR I just submitted in the Makie repo for awareness. I have a working example of a density line chart method (by Moritz & Fisher, 2018) to visualize ma…

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## [Astrophotography tools in Julia - image processing and hardware control](https://discourse.julialang.org/t/astrophotography-tools-in-julia-image-processing-and-hardware-control/132588)

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**Author:** [@brainandforce](https://discourse.julialang.org/u/brainandforce)\
**Replies:** 9\
**Last updated:** [November 21, 2025, 3:09pm UTC](https://discourse.julialang.org/t/astrophotography-tools-in-julia-image-processing-and-hardware-control/132588 "2025-11-21T15:09:29Z")

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I’ve been an amateur astronomer for the past 15 years or so, and only recently have I gotten into astrophotography. (Exhibit A, a 3-panel IRG mosaic of several deep-sky objects in the Small Sagittarius Star Cloud) It…

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## [GLMakie: recording a movie while interacting with a Scene produces a StackOverflow](https://discourse.julialang.org/t/glmakie-recording-a-movie-while-interacting-with-a-scene-produces-a-stackoverflow/133869)

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**Author:** [@tamasgal](https://discourse.julialang.org/u/tamasgal)\
**Replies:** 6\
**Last updated:** [November 21, 2025, 2:22pm UTC](https://discourse.julialang.org/t/glmakie-recording-a-movie-while-interacting-with-a-scene-produces-a-stackoverflow/133869 "2025-11-21T14:22:48Z")

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I am using GLMakie.jl in a GUI application (RainbowAlga.jl) which is an interactive event display for neutrino interactions in water-based Cherenkov detectors. The application works really nicely but I am currently stuck…

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## [Structured multivariate regression](https://discourse.julialang.org/t/structured-multivariate-regression/133954)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 2\
**Last updated:** [November 21, 2025, 12:41pm UTC](https://discourse.julialang.org/t/structured-multivariate-regression/133954 "2025-11-21T12:41:46Z")

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I have a multivariate linear model which imposes the specific structure for each vector observation \\mathbf{y}\_i \\mathbf{y}\_i = \\mathbf{b}\_0 + \\begin{bmatrix} X\_{1,i} & 0 & X\_{c,i} \\\\ 0 & X\_{2,i} & X\_{c,i} \\\\ X\_{1,i} & …

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## [Cubic B spline, path generation in Julia and execution in C++](https://discourse.julialang.org/t/cubic-b-spline-path-generation-in-julia-and-execution-in-c/134020)

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**Author:** [@romain-chiap](https://discourse.julialang.org/u/romain-chiap)\
**Replies:** 0\
**Last updated:** [November 21, 2025, 9:47am UTC](https://discourse.julialang.org/t/cubic-b-spline-path-generation-in-julia-and-execution-in-c/134020 "2025-11-21T09:47:37Z")

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Hello, Given some data points tx, x. I would like to represent the path tx,x as well as its first and second derivative. I need my path to be C² continuous and small. It will be running in embedded C++ I have a set of …

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## [Astrophotographic denoising without machine learning](https://discourse.julialang.org/t/astrophotographic-denoising-without-machine-learning/133986)

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**Author:** [@brainandforce](https://discourse.julialang.org/u/brainandforce)\
**Replies:** 11\
**Last updated:** [November 20, 2025, 8:10pm UTC](https://discourse.julialang.org/t/astrophotographic-denoising-without-machine-learning/133986 "2025-11-20T20:10:47Z")

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I’m on a quest to approach the hobby of astrophotography from a data science perspective. I’ve put several restrictions on myself (all processing is done with free software, no machine learned tools are allowed) because …

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## [Symbolic Fourier Transforms for Educational DSP](https://discourse.julialang.org/t/symbolic-fourier-transforms-for-educational-dsp/134001)

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**Author:** [@franalbani](https://discourse.julialang.org/u/franalbani)\
**Replies:** 1\
**Last updated:** [November 20, 2025, 1:58pm UTC](https://discourse.julialang.org/t/symbolic-fourier-transforms-for-educational-dsp/134001 "2025-11-20T13:58:38Z")

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Hi! I’m new to Julia and wondering if its the right tool for a educational project. I would like to make a program that lets the user (a teacher or student) to select and customize some elemental signals that will then…

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## [VSCode CairoMakie Zoom](https://discourse.julialang.org/t/vscode-cairomakie-zoom/133978)

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**Author:** [@csvance](https://discourse.julialang.org/u/csvance)\
**Replies:** 8\
**Last updated:** [November 19, 2025, 11:44pm UTC](https://discourse.julialang.org/t/vscode-cairomakie-zoom/133978 "2025-11-19T23:44:28Z")

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Is there any way to zoom in VSCode for plots created by CairoMakie? I often visualize high resolution images with many annotations and I can’t seem to find any way to zoom in so I can see the details. Bypassing VSCode a…

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## [InvalidIRError when running AcceleratedKernels.sum on a GPU SubArray (CuArray view)](https://discourse.julialang.org/t/invalidirerror-when-running-acceleratedkernels-sum-on-a-gpu-subarray-cuarray-view/133994)

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**Author:** [@0samuraiE](https://discourse.julialang.org/u/0samuraiE)\
**Replies:** 2\
**Last updated:** [November 20, 2025, 9:20am UTC](https://discourse.julialang.org/t/invalidirerror-when-running-acceleratedkernels-sum-on-a-gpu-subarray-cuarray-view/133994 "2025-11-20T09:20:41Z")

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I’m running into an issue when trying to use AcceleratedKernels.sum on a GPU SubArray (a view into a CuArray). Calling AK.sum on the full array works fine, but calling it on the view throws an InvalidIRError. Question …

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## [Makie - plotting Nanoseconds with custom tick labels](https://discourse.julialang.org/t/makie-plotting-nanoseconds-with-custom-tick-labels/133987)

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**Author:** [@Sukera](https://discourse.julialang.org/u/Sukera)\
**Replies:** 5\
**Last updated:** [November 19, 2025, 3:31pm UTC](https://discourse.julialang.org/t/makie-plotting-nanoseconds-with-custom-tick-labels/133987 "2025-11-19T15:31:11Z")

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I’m trying to scatter an array of Nanosecond values, all on the order of 100ms±50us. When I plot these, I get y tick labels like 10.005cs. Is there some way to get tick labels like 100.05ms instead? I tried to use ytickf…

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## [Looking for Windows ARM tester](https://discourse.julialang.org/t/looking-for-windows-arm-tester/133912)

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**Author:** [@GeorgeGkountouras](https://discourse.julialang.org/u/GeorgeGkountouras)\
**Replies:** 6\
**Last updated:** [November 19, 2025, 2:19pm UTC](https://discourse.julialang.org/t/looking-for-windows-arm-tester/133912 "2025-11-19T14:19:59Z")

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After a successful OpenCL test on my AMD iGPU, I want to see if the same method can be used to target Snapdragon Adreno GPUs. Unfortunately, I don’t have access to one of these devices. Can someone on Windows ARM help m…

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## [CasADiNLPModels.jl: an interface for CasADi via loading code generated functions](https://discourse.julialang.org/t/casadinlpmodels-jl-an-interface-for-casadi-via-loading-code-generated-functions/133925)

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**Author:** [@apozharski](https://discourse.julialang.org/u/apozharski)\
**Replies:** 1\
**Last updated:** [November 19, 2025, 11:35am UTC](https://discourse.julialang.org/t/casadinlpmodels-jl-an-interface-for-casadi-via-loading-code-generated-functions/133925 "2025-11-19T11:35:02Z")

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We (@frapac, @apozharski, and Armin Nurkanović) have released a small new package for easily interfacing NLPs modeled in CasADi with the NLPModels.jl ecosystem. The package implements loading of CasÄDi code generated fun…

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## [Plots stopped working (more or less out of nowhere)](https://discourse.julialang.org/t/plots-stopped-working-more-or-less-out-of-nowhere/133929)

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**Author:** [@Torkel](https://discourse.julialang.org/u/Torkel)\
**Replies:** 18\
**Last updated:** [November 18, 2025, 2:02pm UTC](https://discourse.julialang.org/t/plots-stopped-working-more-or-less-out-of-nowhere/133929 "2025-11-18T14:02:24Z")

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I have an environment which was fine, but after not touching it for a week, suddenly it does no longer work. I haven’t done anything to package versions, so there must be something weirder going on. I have been back and …

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## [Fourier transform of a Dual vector](https://discourse.julialang.org/t/fourier-transform-of-a-dual-vector/118538)

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**Author:** [@cdqb](https://discourse.julialang.org/u/cdqb)\
**Replies:** 4\
**Last updated:** [November 18, 2025, 7:46am UTC](https://discourse.julialang.org/t/fourier-transform-of-a-dual-vector/118538 "2025-11-18T07:46:47Z")

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I am trying to Fourier transform a vector of Dual numbers (or rather, ForwardDiff is trying to do that for me as part of a bigger task). However, this does not seem to work with the perhaps most commonly used package FFT…

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## [PythonPlot instead of PyPlot](https://discourse.julialang.org/t/pythonplot-instead-of-pyplot/133923)

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**Author:** [@sparrowhawk](https://discourse.julialang.org/u/sparrowhawk)\
**Replies:** 0\
**Last updated:** [November 17, 2025, 6:01am UTC](https://discourse.julialang.org/t/pythonplot-instead-of-pyplot/133923 "2025-11-17T06:01:40Z")

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Hi all, I’ve been having trouble with matplotlib dependencies within my package when using PyPlot.jl – most of these errors crop up when there are upstream changes within Conda/matplotlib, that show up during the compil…

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## [Microkinetic simulations yield negative concentrations using Catalyst.jl](https://discourse.julialang.org/t/microkinetic-simulations-yield-negative-concentrations-using-catalyst-jl/133874)

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**Author:** [@lisa-schmoltzi](https://discourse.julialang.org/u/lisa-schmoltzi)\
**Replies:** 9\
**Last updated:** [November 17, 2025, 4:28am UTC](https://discourse.julialang.org/t/microkinetic-simulations-yield-negative-concentrations-using-catalyst-jl/133874 "2025-11-17T04:28:52Z")

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I use Catalyst.jl to model kinetic data of a chemical reaction network. Somehow, for some specific sets of initial concentrations, the resulting time-concentration course results in negative concentrations. Can anyone e…

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## [Building a JuliaHealth-specific Genie.jl Dashboard](https://discourse.julialang.org/t/building-a-juliahealth-specific-genie-jl-dashboard/133085)

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**Author:** [@kosuri-indu](https://discourse.julialang.org/u/kosuri-indu)\
**Replies:** 6\
**Last updated:** [November 16, 2025, 2:17pm UTC](https://discourse.julialang.org/t/building-a-juliahealth-specific-genie-jl-dashboard/133085 "2025-11-16T14:17:31Z")

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Hello everyone! :waving\_hand: I am currently working towards building a JuliaHealth-specific Dashboard using Genie.jl. The main idea is to have one simple, unified interface where users can: Load or connect to health …

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## [ForwardDiff.jl with FFTW.jl](https://discourse.julialang.org/t/forwarddiff-jl-with-fftw-jl/97366)

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**Author:** [@Bill\_Holmes](https://discourse.julialang.org/u/Bill_Holmes)\
**Replies:** 5\
**Last updated:** [November 14, 2025, 8:15am UTC](https://discourse.julialang.org/t/forwarddiff-jl-with-fftw-jl/97366 "2025-11-14T08:15:54Z")

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Hello all. I am working with ForwardDiff.jl on a problem that requires computing kernel density estimates (and thus convolutions which boils down to FFT). I am searching for a way to do this using autodifferentation. I r…

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## [Setting both color maps and opacity when plotting rasters and heatmaps with Makie](https://discourse.julialang.org/t/setting-both-color-maps-and-opacity-when-plotting-rasters-and-heatmaps-with-makie/133600)

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**Author:** [@eugenetkj98](https://discourse.julialang.org/u/eugenetkj98)\
**Replies:** 8\
**Last updated:** [November 13, 2025, 11:05pm UTC](https://discourse.julialang.org/t/setting-both-color-maps-and-opacity-when-plotting-rasters-and-heatmaps-with-makie/133600 "2025-11-13T23:05:30Z")

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Hi all, I’m looking to make a plot of some rasters (or if all else fails heatmaps) of values using Makie where the base color is independent of the opacity. Trying to blend two bits of information here where there are tw…

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## [GMT.jl: How to specify several river styles e.g. in coast?](https://discourse.julialang.org/t/gmt-jl-how-to-specify-several-river-styles-e-g-in-coast/133834)

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**Author:** [@trg818](https://discourse.julialang.org/u/trg818)\
**Replies:** 3\
**Last updated:** [November 13, 2025, 1:20pm UTC](https://discourse.julialang.org/t/gmt-jl-how-to-specify-several-river-styles-e-g-in-coast/133834 "2025-11-13T13:20:10Z")

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Hi, basically, my question is how to translate the regular GMT coast options -I0/thicker,lightblue -I1/thick,lightblue -I2/thin,lightblue to the keyword argument style. I tried rivers=(type=(0,1,2),style=("thicker","…

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