# Latest

**URL:** https://discourse.julialang.org/latest.md?page=549

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

**Page:** 550

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## [Is Julia worth it for this project?](https://discourse.julialang.org/t/is-julia-worth-it-for-this-project/106483)

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**Author:** [@Mathis](https://discourse.julialang.org/u/Mathis)\
**Replies:** 8\
**Last updated:** [November 21, 2023, 4:20pm UTC](https://discourse.julialang.org/t/is-julia-worth-it-for-this-project/106483 "2023-11-21T16:20:14Z")

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Hi, I am in the process of building a browser game that essentially mimics the Football Manager game from Sports Interactive. The simulation in the original Football Manager game involves managing a football team by mak…

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## [Using @turbo and remaining agnostic about variable names](https://discourse.julialang.org/t/using-turbo-and-remaining-agnostic-about-variable-names/106533)

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**Author:** [@ditfurth](https://discourse.julialang.org/u/ditfurth)\
**Replies:** 1\
**Last updated:** [November 21, 2023, 3:33pm UTC](https://discourse.julialang.org/t/using-turbo-and-remaining-agnostic-about-variable-names/106533 "2023-11-21T15:33:49Z")

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Hi all, right now, I specify the variables: @turbo for j in axes(delta, 1), k in axes(delta, 2) delta\[j, k\] += exp(nu\_alpha\[k\] + price\[j\]\*nu\_p\[k\] + x\_j\[j\]\*nu\_xj\[k\] + x\_r\[j\]\*nu\_xr\[k\] + x\_m\[j\]\*nu\_xm\[k\] +xi\[j\]) …

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## [Implementing the Learn rate scheduling in the NeuralPDE julia package](https://discourse.julialang.org/t/implementing-the-learn-rate-scheduling-in-the-neuralpde-julia-package/106500)

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**Author:** [@Aakhash\_Sundaresan](https://discourse.julialang.org/u/Aakhash_Sundaresan)\
**Replies:** 5\
**Last updated:** [November 21, 2023, 1:27pm UTC](https://discourse.julialang.org/t/implementing-the-learn-rate-scheduling-in-the-neuralpde-julia-package/106500 "2023-11-21T13:27:10Z")

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Hi eveyone, I have a query regarding the implementation of the learn rate scheduling in the NeuralPDE frmework during training. I want to progressively reduce the learning rate of the ADAM optimizer using a decay factor.…

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## [Documenter warning](https://discourse.julialang.org/t/documenter-warning/106475)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 3\
**Last updated:** [November 21, 2023, 11:17am UTC](https://discourse.julialang.org/t/documenter-warning/106475 "2023-11-21T11:17:41Z")

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I want to build an html documentation locally, it will never be on any server. I execute the command: include("docs/make.jl") Content of make.jl: using Documenter: makedocs src="README.md" dst="docs/src/index.md" if…

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## [Julia on iOS and Android](https://discourse.julialang.org/t/julia-on-ios-and-android/7346)

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**Author:** [@pitao](https://discourse.julialang.org/u/pitao)\
**Replies:** 62\
**Last updated:** [November 21, 2023, 9:32am UTC](https://discourse.julialang.org/t/julia-on-ios-and-android/7346 "2023-11-21T09:32:36Z")

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Can anyone see any path towards running Julia code on iOS / Android? It would be fantastic to be able to solve the two-language problem (e.g. prototyping in Python and deploying in C++). The idea would be to release an…

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## [ERROR: LinearAlgebra.SingularException(5)](https://discourse.julialang.org/t/error-linearalgebra-singularexception-5/106491)

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**Author:** [@Shayan](https://discourse.julialang.org/u/Shayan)\
**Replies:** 5\
**Last updated:** [November 20, 2023, 10:09pm UTC](https://discourse.julialang.org/t/error-linearalgebra-singularexception-5/106491 "2023-11-20T22:09:48Z")

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How should I deal with this error: ERROR: LinearAlgebra.SingularException(5) I have the following matrix: Xₜ⁽ˡ⁾ = \[ 0.997838 1.01925 1.01489 1.00797 0.997964 0.992047 1.02963 0.987861 0.990278 0.991172 \] And…

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## [ERROR: LoadError: EOFError: read end of file](https://discourse.julialang.org/t/error-loaderror-eoferror-read-end-of-file/106472)

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**Author:** [@fathanbk](https://discourse.julialang.org/u/fathanbk)\
**Replies:** 9\
**Last updated:** [November 21, 2023, 3:53am UTC](https://discourse.julialang.org/t/error-loaderror-eoferror-read-end-of-file/106472 "2023-11-21T03:53:44Z")

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I started to learn julia but i got this error when I’m trying to deserialize my file.mat

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## [Best practices for defining inner constructors for parametric types](https://discourse.julialang.org/t/best-practices-for-defining-inner-constructors-for-parametric-types/106494)

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**Author:** [@brainandforce](https://discourse.julialang.org/u/brainandforce)\
**Replies:** 3\
**Last updated:** [November 20, 2023, 11:31pm UTC](https://discourse.julialang.org/t/best-practices-for-defining-inner-constructors-for-parametric-types/106494 "2023-11-20T23:31:57Z")

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In much of my development, I have parametric types that need inner constructors to be defined with some validation code: struct MyType{T\<:Number} a::T b::T # Inner constructor goes here. end However, I’m no…

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## [Washington D.C. Area Meetups](https://discourse.julialang.org/t/washington-d-c-area-meetups/106498)

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**Author:** [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Replies:** 0\
**Last updated:** [November 20, 2023, 11:37pm UTC](https://discourse.julialang.org/t/washington-d-c-area-meetups/106498 "2023-11-20T23:37:44Z")

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Who would be interested in Washington D.C. greater metropolitan area meetups? @nhz2 and I have managed to occasionally meet in downtown DC around the convention center. I would be particularly interested in meetups arou…

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## [Updating Julia, IJulia](https://discourse.julialang.org/t/updating-julia-ijulia/106289)

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**Author:** [@KGregory](https://discourse.julialang.org/u/KGregory)\
**Replies:** 31\
**Last updated:** [November 20, 2023, 11:01pm UTC](https://discourse.julialang.org/t/updating-julia-ijulia/106289 "2023-11-20T23:01:09Z")

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I previously used an Julia 1.5 with the IJulia notebook to run an Mimi package. I installed the new version of Julia via julia-1.9.3-win64.exe. The new path is C:\\Users\\Ken\\AppData\\Local\\Programs\\Julia-1.9.3\\bin The I…

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## ['ESS' in Turing.jl](https://discourse.julialang.org/t/ess-in-turing-jl/103650)

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**Author:** [@PrimulaBunce](https://discourse.julialang.org/u/PrimulaBunce)\
**Replies:** 3\
**Last updated:** [November 20, 2023, 9:21pm UTC](https://discourse.julialang.org/t/ess-in-turing-jl/103650 "2023-11-20T21:21:53Z")

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Hi, I’m new to MCMC, and I’m using the Turing package to implement NUTS. par\_NUTS = sample(model, NUTS(1000, 0.65), MCMCThreads(), 1000, 3) I’m trying to figure out what the Effective Sample Size (ESS) values retur…

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## [Hash Collision in Memoization](https://discourse.julialang.org/t/hash-collision-in-memoization/106479)

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**Author:** [@marco\_menarini](https://discourse.julialang.org/u/marco_menarini)\
**Replies:** 10\
**Last updated:** [November 20, 2023, 9:02pm UTC](https://discourse.julialang.org/t/hash-collision-in-memoization/106479 "2023-11-20T21:02:44Z")

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Using the Caching.jl and LRUCache.jl packages and reading Tom Kwong’s book on the memorization pattern, I noticed an edge case that is never considered. No matter how big, a hash can be repeated for different data. Gran…

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## [Custom bijector in TuringLang Bijectors](https://discourse.julialang.org/t/custom-bijector-in-turinglang-bijectors/105278)

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**Author:** [@hanyas](https://discourse.julialang.org/u/hanyas)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 6:36pm UTC](https://discourse.julialang.org/t/custom-bijector-in-turinglang-bijectors/105278 "2023-11-20T18:36:38Z")

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I am new to Julia and I am trying to use the Bijectors.jl package to define a tanh bijector. Looking through the doc and the code, I came up with different versions of the following struct Tanh \<: Bijectors.Bijector end…

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## [Q: Using TermInterface to set up Metatheory](https://discourse.julialang.org/t/q-using-terminterface-to-set-up-metatheory/106480)

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**Author:** [@Audrius-St](https://discourse.julialang.org/u/Audrius-St)\
**Replies:** 0\
**Last updated:** [November 20, 2023, 6:22pm UTC](https://discourse.julialang.org/t/q-using-terminterface-to-set-up-metatheory/106480 "2023-11-20T18:22:43Z")

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While I have been using Symbolics and SymbolicUtils for some time now , I am a novice in the use of Metatheory. My first attempt to set up Metatheory using TermInterface as described in the documentation is opened as an…

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## [Saving a Flux ML model in a keras compatible format](https://discourse.julialang.org/t/saving-a-flux-ml-model-in-a-keras-compatible-format/106452)

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**Author:** [@gradureau](https://discourse.julialang.org/u/gradureau)\
**Replies:** 1\
**Last updated:** [November 20, 2023, 6:06pm UTC](https://discourse.julialang.org/t/saving-a-flux-ml-model-in-a-keras-compatible-format/106452 "2023-11-20T18:06:16Z")

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Hey everyone, I am now using Flux to train my model and the goal is to exploit these models in fortran. So far I have seen that there is a fortran library that is called neural-fortran that enables to use a neural netwo…

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## [Inset axis on a LScene in Makie](https://discourse.julialang.org/t/inset-axis-on-a-lscene-in-makie/105125)

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**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 6\
**Last updated:** [November 20, 2023, 4:12pm UTC](https://discourse.julialang.org/t/inset-axis-on-a-lscene-in-makie/105125 "2023-11-20T16:12:14Z")

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I’m currently trying to display a background image behind a LScene. I tried to translate! the Axis containing the image behind the LScene as recommended for inset axes in Makie - Inset axes and their drawing order, but …

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## [Modeling elliptical geometries with Meshes.jl](https://discourse.julialang.org/t/modeling-elliptical-geometries-with-meshes-jl/106467)

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**Author:** [@mike.ingold](https://discourse.julialang.org/u/mike.ingold)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 2:42pm UTC](https://discourse.julialang.org/t/modeling-elliptical-geometries-with-meshes-jl/106467 "2023-11-20T14:42:02Z")

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Maybe this is a dumb question but is there a native method for defining ellipses/ellipsoids in Meshes.jl? I didn’t see anything in the docs, and from a quick perusal of the source it doesn’t seem like Ball or Sphere were…

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## [Best way to solve a highly ill-conditioned linear system](https://discourse.julialang.org/t/best-way-to-solve-a-highly-ill-conditioned-linear-system/106441)

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**Author:** [@RayleighLord](https://discourse.julialang.org/u/RayleighLord)\
**Replies:** 6\
**Last updated:** [November 20, 2023, 1:59pm UTC](https://discourse.julialang.org/t/best-way-to-solve-a-highly-ill-conditioned-linear-system/106441 "2023-11-20T13:59:29Z")

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Hello, I would like for some advice to solve the following ill-conditioned linear system using Julia. My problem has the following form \\begin{pmatrix}x^+ \\\\ x^- \\end{pmatrix}=D\_1 AD\_2A^{-1}D\_1\\begin{pmatrix}y^+ \\\\ y^-…

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## [Loading vector data to Gridspace in Agents.jl](https://discourse.julialang.org/t/loading-vector-data-to-gridspace-in-agents-jl/106459)

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**Author:** [@imantha](https://discourse.julialang.org/u/imantha)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 1:13pm UTC](https://discourse.julialang.org/t/loading-vector-data-to-gridspace-in-agents-jl/106459 "2023-11-20T13:13:58Z")

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Hi, I am wondering whether there is a way in Agents.jl to load vector data (using perhaps .shpfile) to something like Grid space. Or is this possbile with open street map space? For context, what I am trying to do is m…

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## [How can I locate a function in a module?](https://discourse.julialang.org/t/how-can-i-locate-a-function-in-a-module/106458)

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**Author:** [@jiang\_ming\_zhang](https://discourse.julialang.org/u/jiang_ming_zhang)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 12:46pm UTC](https://discourse.julialang.org/t/how-can-i-locate-a-function-in-a-module/106458 "2023-11-20T12:46:24Z")

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I am reading someone else’s julia code. He has a huge module. In his code, he called many functions. I would like to locate the functions in the module so as to read the original codes for these functions. I do not wa…

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## [Why Julia is much slower than MATLAB on GPU computing?](https://discourse.julialang.org/t/why-julia-is-much-slower-than-matlab-on-gpu-computing/106450)

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**Author:** [@DennisFang](https://discourse.julialang.org/u/DennisFang)\
**Replies:** 30\
**Last updated:** [November 20, 2023, 12:44pm UTC](https://discourse.julialang.org/t/why-julia-is-much-slower-than-matlab-on-gpu-computing/106450 "2023-11-20T12:44:29Z")

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Hello, I use a local computer, consisting of an NVIDIA RTX 3090 GPU, with a Windows 10 system to run models in different programming languages and compare their performance. When comparing Julia (v1.9.3) and MATLAB (202…

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## [Library/package for calculating vertex curvature and normals of a mesh](https://discourse.julialang.org/t/library-package-for-calculating-vertex-curvature-and-normals-of-a-mesh/106456)

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**Author:** [@Jacopo\_Romano](https://discourse.julialang.org/u/Jacopo_Romano)\
**Replies:** 1\
**Last updated:** [November 20, 2023, 11:42am UTC](https://discourse.julialang.org/t/library-package-for-calculating-vertex-curvature-and-normals-of-a-mesh/106456 "2023-11-20T11:42:05Z")

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Hi everyone, I’m trying to develop a numerical scheme for simulating the equation of motion of a closed surface in 3D. To do it, I wanted to represent the surface as a mesh, compute the normal velocity, and use it to e…

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## [Experiences Using Julia For Data Science Competition](https://discourse.julialang.org/t/experiences-using-julia-for-data-science-competition/106061)

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**Author:** [@indymnv](https://discourse.julialang.org/u/indymnv)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 10:44am UTC](https://discourse.julialang.org/t/experiences-using-julia-for-data-science-competition/106061 "2023-11-20T10:44:10Z")

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I’ve been interested in participating in data science and machine learning competitions for some time. And I believe Julia can be a great language in these competitions. I understand that Kaggle seems to be the most pop…

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## [\[Video\] How to Reduce Julia's Latency](https://discourse.julialang.org/t/video-how-to-reduce-julias-latency/100298)

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**Author:** [@jacobusmmsmit](https://discourse.julialang.org/u/jacobusmmsmit)\
**Replies:** 13\
**Last updated:** [November 20, 2023, 9:26am UTC](https://discourse.julialang.org/t/video-how-to-reduce-julias-latency/100298 "2023-11-20T09:26:43Z")

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Hi everyone, I made a video about reducing Julia’s latency after a conversation with a friend who said that they really wish all of this information was in one place. Hence, you get this video. Possibly part one of two…

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## [Recording solutions to Julia Bifurcation Kit continuation](https://discourse.julialang.org/t/recording-solutions-to-julia-bifurcation-kit-continuation/106384)

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**Author:** [@GeorgeA](https://discourse.julialang.org/u/GeorgeA)\
**Replies:** 5\
**Last updated:** [November 20, 2023, 7:11am UTC](https://discourse.julialang.org/t/recording-solutions-to-julia-bifurcation-kit-continuation/106384 "2023-11-20T07:11:46Z")

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I can’t find the correct line of code to obtain the values for specific variables from Julia Bifurcation kit. I have a system of ODEs and a fixed point for the system. I can use the continuation function to obtain the no…

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## [Plots: replace curve](https://discourse.julialang.org/t/plots-replace-curve/106448)

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**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 1\
**Last updated:** [November 20, 2023, 5:42am UTC](https://discourse.julialang.org/t/plots-replace-curve/106448 "2023-11-20T05:42:29Z")

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How does one replace a curve with another one in a plot? I have this loop p = ptrans\[1\] pl = plot(vec(distances), vec(p), leg = false, ylims = (-1000, 1000)) for i in eachindex(d\["times"\]) p = ptrans\[i\]…

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## [DynamicalSystems Poincare map of sin(u\[1\]) and u\[2\] \[using ProjectedDynamicalSystems\]](https://discourse.julialang.org/t/dynamicalsystems-poincare-map-of-sin-u-1-and-u-2-using-projecteddynamicalsystems/106443)

<div class="topic-metadata">

**Author:** [@hisacro](https://discourse.julialang.org/u/hisacro)\
**Replies:** 2\
**Last updated:** [November 20, 2023, 2:40am UTC](https://discourse.julialang.org/t/dynamicalsystems-poincare-map-of-sin-u-1-and-u-2-using-projecteddynamicalsystems/106443 "2023-11-20T02:40:38Z")

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I will take an example from a predefined dynamical system using PredefinedDynamicalSystems, DynamicalSystems ds = Systems.double\_pendulum( \[π/2, 0, 0, π\]; G=10.0, L1 = 1.0, L2 = 1.0, M1 = 1.0, M2 = 1.0) Points, t = tra…

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## [Alternatives to flame graphs for profiler](https://discourse.julialang.org/t/alternatives-to-flame-graphs-for-profiler/103328)

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**Author:** [@pjuergens](https://discourse.julialang.org/u/pjuergens)\
**Replies:** 6\
**Last updated:** [November 20, 2023, 12:03am UTC](https://discourse.julialang.org/t/alternatives-to-flame-graphs-for-profiler/103328 "2023-11-20T00:03:59Z")

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Hello there, I am wondering if there is an alternative way to show profiler results (at best in VS Code) than a simple flame graph. What I’m basically looking for is a way to see cumulated time spend in a function/line …

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## [DifferentialEquations.jl callbacks\_buckExample not giving correct output](https://discourse.julialang.org/t/differentialequations-jl-callbacks-buckexample-not-giving-correct-output/106444)

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**Author:** [@mongi](https://discourse.julialang.org/u/mongi)\
**Replies:** 1\
**Last updated:** [November 19, 2023, 10:42pm UTC](https://discourse.julialang.org/t/differentialequations-jl-callbacks-buckexample-not-giving-correct-output/106444 "2023-11-19T22:42:13Z")

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Greetings, I have a question about the use of callbacks in differentialEquation.jl that was asked here: https://github.com/SciML/DifferentialEquations.jl/issues/998 thank you for your help

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## [Oracle cloud free tier feedback](https://discourse.julialang.org/t/oracle-cloud-free-tier-feedback/106420)

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**Author:** [@rdavis120](https://discourse.julialang.org/u/rdavis120)\
**Replies:** 4\
**Last updated:** [November 19, 2023, 9:49pm UTC](https://discourse.julialang.org/t/oracle-cloud-free-tier-feedback/106420 "2023-11-19T21:49:25Z")

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Does anyone have any experience (positive or negative) of running julia on the oracle cloud free tier (4 arm cores / 24GB ram). The generous memory allocation would obviously be helpful for Julia.

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