# Latest

**URL:** https://discourse.julialang.org/latest.md?page=556

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

**Page:** 557

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## [AD-able cubature](https://discourse.julialang.org/t/ad-able-cubature/106036)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 13\
**Last updated:** [November 11, 2023, 6:07pm UTC](https://discourse.julialang.org/t/ad-able-cubature/106036 "2023-11-11T18:07:24Z")

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I have functions defined on \[0,1\]^4 \\times \[0,\\infty) that I want to integrate numerically, ideally in a way that I can use with an automatic differentiation framework. I know very little about these functions ex ante ot…

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## [Julia 1.10-rc1 gives a huge speed-up over Julia 1.9](https://discourse.julialang.org/t/julia-1-10-rc1-gives-a-huge-speed-up-over-julia-1-9/106072)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 4\
**Last updated:** [November 11, 2023, 3:30pm UTC](https://discourse.julialang.org/t/julia-1-10-rc1-gives-a-huge-speed-up-over-julia-1-9/106072 "2023-11-11T15:30:50Z")

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I am running 400 simulations, based on ModelingToolkit, each 11h of real-time. With Julia 1.9, launching Julia with: julia --project -i -q -t 16 it takes 44 s (second run). With Julia 1.10-rc1, launching Julia with: …

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## [\[ANN\] KangarooTwelve.jl — The fastest cryptographic hash in Julia](https://discourse.julialang.org/t/ann-kangarootwelve-jl-the-fastest-cryptographic-hash-in-julia/106067)

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**Author:** [@tecosaur](https://discourse.julialang.org/u/tecosaur)\
**Replies:** 15\
**Last updated:** [November 11, 2023, 5:18pm UTC](https://discourse.julialang.org/t/ann-kangarootwelve-jl-the-fastest-cryptographic-hash-in-julia/106067 "2023-11-11T17:18:37Z")

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For a while now I’ve been dissatisfied with the hashing situation in Julia, with the need to compromise between: Fast and laughably non-cryptographic (CRC32c) Cryptographic, but slow (SHA2/SHA3) This has led me to go …

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## [Modifying Plots.jl subplots in-place](https://discourse.julialang.org/t/modifying-plots-jl-subplots-in-place/106069)

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**Author:** [@CM1](https://discourse.julialang.org/u/CM1)\
**Replies:** 5\
**Last updated:** [November 11, 2023, 4:03pm UTC](https://discourse.julialang.org/t/modifying-plots-jl-subplots-in-place/106069 "2023-11-11T16:03:59Z")

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As discussed recently in this thread, we are wondering whether it is possible to create one initial plot with subplots, which then can be individually modified by push!. So instead of creating two separate plots and the…

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## [Plots.jl white marker with coloured stroke](https://discourse.julialang.org/t/plots-jl-white-marker-with-coloured-stroke/104888)

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**Author:** [@abehersan](https://discourse.julialang.org/u/abehersan)\
**Replies:** 5\
**Last updated:** [November 11, 2023, 3:49pm UTC](https://discourse.julialang.org/t/plots-jl-white-marker-with-coloured-stroke/104888 "2023-11-11T15:49:11Z")

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Using the GR backend, I would like to have scatter plots where the inside of the markers are white whilst the edge/stroke is the color of the current palette. The problem is that setting markercolor=:white will also mak…

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## [Question on installation](https://discourse.julialang.org/t/question-on-installation/106074)

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**Author:** [@Vin\_Lunney](https://discourse.julialang.org/u/Vin_Lunney)\
**Replies:** 3\
**Last updated:** [November 11, 2023, 3:37pm UTC](https://discourse.julialang.org/t/question-on-installation/106074 "2023-11-11T15:37:37Z")

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I’m sorry if this is a really stupid question, but I’m used to seeing some type of INSTALL.md or other doc in an archive that describes the installation process. I just can’t seem to find something that actually talks ab…

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## [How do I flip the r-axis in polar plot?](https://discourse.julialang.org/t/how-do-i-flip-the-r-axis-in-polar-plot/106022)

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**Author:** [@minetest2048](https://discourse.julialang.org/u/minetest2048)\
**Replies:** 2\
**Last updated:** [November 10, 2023, 11:44pm UTC](https://discourse.julialang.org/t/how-do-i-flip-the-r-axis-in-polar-plot/106022 "2023-11-10T23:44:10Z")

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I want to plot satellite track over a ground station, like how Gpredict and other ground station tool does it: In that polar plot, for the r-axis, 90 degrees is at the center and 0 degrees is at the edge. In Julia it…

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## [Is package development fun?](https://discourse.julialang.org/t/is-package-development-fun/106058)

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**Author:** [@Tarny\_GG\_Channie](https://discourse.julialang.org/u/Tarny_GG_Channie)\
**Replies:** 5\
**Last updated:** [November 11, 2023, 12:54pm UTC](https://discourse.julialang.org/t/is-package-development-fun/106058 "2023-11-11T12:54:38Z")

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Background of this analysis: Unlike most people who see life as serious work and games as something for fun, for me, life is a game and how well you perform in life is like the game score. With that, I perform this analy…

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## [\[ANN\] Makie v0.19.12 released!](https://discourse.julialang.org/t/ann-makie-v0-19-12-released/105659)

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**Author:** [@sdanisch](https://discourse.julialang.org/u/sdanisch)\
**Replies:** 2\
**Last updated:** [November 11, 2023, 11:44am UTC](https://discourse.julialang.org/t/ann-makie-v0-19-12-released/105659 "2023-11-11T11:44:04Z")

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Just before the big 0.20 release, we decided to make one last non breaking release! You can read about all the important changes between 0.19.9 - 0.19.12 here: Stay tuned for the 0.20 release coming out in the coming…

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## [How to create an animation based on t, x, y and z data?](https://discourse.julialang.org/t/how-to-create-an-animation-based-on-t-x-y-and-z-data/25672)

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**Author:** [@fusion809](https://discourse.julialang.org/u/fusion809)\
**Replies:** 10\
**Last updated:** [November 11, 2023, 9:57am UTC](https://discourse.julialang.org/t/how-to-create-an-animation-based-on-t-x-y-and-z-data/25672 "2023-11-11T09:57:55Z")

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I would like to simulate a Lorenz system, showing how the solution vector (x, y, z) changes with time. I know how to plot x, y and z data using PyPlot.plot3D, but how does one do a time plot, that is an animation based o…

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## [ComponentArray of ArrayPartition](https://discourse.julialang.org/t/componentarray-of-arraypartition/106048)

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**Author:** [@sand](https://discourse.julialang.org/u/sand)\
**Replies:** 9\
**Last updated:** [November 11, 2023, 9:56am UTC](https://discourse.julialang.org/t/componentarray-of-arraypartition/106048 "2023-11-11T09:56:56Z")

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Hello, I am trying to use a ArrayPartition inside a ComponentArray. Here is a MRE: using ComponentArrays using RecursiveArrayTools var1 = ArrayPartition(randn(10), randn(10)); var2 = ComponentArray(a=randn(10), b=…

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## [Documentation page for the XLSX.jl package is hacked](https://discourse.julialang.org/t/documentation-page-for-the-xlsx-jl-package-is-hacked/106046)

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**Author:** [@vsoler](https://discourse.julialang.org/u/vsoler)\
**Replies:** 5\
**Last updated:** [November 11, 2023, 8:59am UTC](https://discourse.julialang.org/t/documentation-page-for-the-xlsx-jl-package-is-hacked/106046 "2023-11-11T08:59:11Z")

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I’m learning to use the XLSX.jl package. I want to read and write excel files. When I try to open its documentation page at https://felipenoris.github.io/XLSX.jl/stable/ … my Norton antivirus packge tells me that the…

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## [Broadcasting call to a vector-valued function](https://discourse.julialang.org/t/broadcasting-call-to-a-vector-valued-function/106056)

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**Author:** [@elenev](https://discourse.julialang.org/u/elenev)\
**Replies:** 4\
**Last updated:** [November 11, 2023, 1:55am UTC](https://discourse.julialang.org/t/broadcasting-call-to-a-vector-valued-function/106056 "2023-11-11T01:55:38Z")

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What is the most julian way to broadcast a call to a vector-valued function? For example, take the following function. function return\_vec(x) return \[x, x^2\] end I would like to collect outputs for each x in 1:15 …

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## [Dependency architecture for a custom plotting package](https://discourse.julialang.org/t/dependency-architecture-for-a-custom-plotting-package/106054)

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**Author:** [@gjlkd425](https://discourse.julialang.org/u/gjlkd425)\
**Replies:** 0\
**Last updated:** [November 10, 2023, 11:39pm UTC](https://discourse.julialang.org/t/dependency-architecture-for-a-custom-plotting-package/106054 "2023-11-10T23:39:45Z")

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I am developing a package, call it Model, which consists of a module that defines all the types and functions pertinent to the computational aspect of the codebase. I am also developing some custom plotting and graphics …

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## [GPU kernel that is ~20x slower than corresponding CPU version](https://discourse.julialang.org/t/gpu-kernel-that-is-20x-slower-than-corresponding-cpu-version/105998)

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**Author:** [@Dale\_James\_Black](https://discourse.julialang.org/u/Dale_James_Black)\
**Replies:** 9\
**Last updated:** [November 10, 2023, 9:35pm UTC](https://discourse.julialang.org/t/gpu-kernel-that-is-20x-slower-than-corresponding-cpu-version/105998 "2023-11-10T21:35:39Z")

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I have a 2D distance transform algorithm on the GPU that is around ~20x slower than its corresponding CPU version. I don’t know if this is an issue with the way the kernel was written or potentially to be expected on Met…

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## [Taking advantage of Apple M1?](https://discourse.julialang.org/t/taking-advantage-of-apple-m1/93310)

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**Author:** [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)\
**Replies:** 27\
**Last updated:** [November 10, 2023, 8:45pm UTC](https://discourse.julialang.org/t/taking-advantage-of-apple-m1/93310 "2023-11-10T20:45:31Z")

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Hi all. So, I got my new laptop with a Apple M1 chip. I have heard is great. I wonder how are you guys taking advange of it and its cores/GPU. How do you start Julia, use Metal.jl, and other tips to speed up processes. …

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## [Expressions vs Variables+Constraints in JuMP models](https://discourse.julialang.org/t/expressions-vs-variables-constraints-in-jump-models/105979)

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**Author:** [@ffevotte](https://discourse.julialang.org/u/ffevotte)\
**Replies:** 6\
**Last updated:** [November 10, 2023, 8:24pm UTC](https://discourse.julialang.org/t/expressions-vs-variables-constraints-in-jump-models/105979 "2023-11-10T20:24:14Z")

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Hello, and sorry for the naive question (optimization is not my primary field of expertise). And sorry if this is already discussed in the documentation; I didn’t see it. It seems to me that “expressions” in JuMP could …

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## [What are the famous companies or software that uses the Julia programming language?](https://discourse.julialang.org/t/what-are-the-famous-companies-or-software-that-uses-the-julia-programming-language/81047)

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**Author:** [@anon29721930](https://discourse.julialang.org/u/anon29721930)\
**Replies:** 4\
**Last updated:** [November 10, 2023, 8:15pm UTC](https://discourse.julialang.org/t/what-are-the-famous-companies-or-software-that-uses-the-julia-programming-language/81047 "2023-11-10T20:15:10Z")

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Hi all! Context I like to program and I’m new to programming Julia, I’m curious to know which famous company or software uses Julia In some programming languages there is a link called showcase where it shows some appl…

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## [Grouped boxplot - https://github.com/JuliaPlots/StatsPlots.jl/pull/192](https://discourse.julialang.org/t/grouped-boxplot-https-github-com-juliaplots-statsplots-jl-pull-192/44655)

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**Author:** [@Ibrahim-a-Ibrahim](https://discourse.julialang.org/u/Ibrahim-a-Ibrahim)\
**Replies:** 7\
**Last updated:** [November 10, 2023, 6:37pm UTC](https://discourse.julialang.org/t/grouped-boxplot-https-github-com-juliaplots-statsplots-jl-pull-192/44655 "2023-11-10T18:37:25Z")

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I have a 3D array (24×3×3 Array{Float64,3}) as follows: x=rand(24,2,3) How can I plot a grouped boxplot for x as shown in the following figure?

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## [Permutedims of a mesh (swapping the order of axes )](https://discourse.julialang.org/t/permutedims-of-a-mesh-swapping-the-order-of-axes/106042)

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**Author:** [@gltchr](https://discourse.julialang.org/u/gltchr)\
**Replies:** 1\
**Last updated:** [November 10, 2023, 5:54pm UTC](https://discourse.julialang.org/t/permutedims-of-a-mesh-swapping-the-order-of-axes/106042 "2023-11-10T17:54:56Z")

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Hello, I want to read several geometries for visualisation from a list of .obj files, however their axes are arranged in the wrong order (y,z,x) in my frame of reference. Goal: permute dimensions of a mesh. The mesh l…

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## [Again errors with no BLAS/LAPACK library loaded!](https://discourse.julialang.org/t/again-errors-with-no-blas-lapack-library-loaded/105943)

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**Author:** [@andreasvarga](https://discourse.julialang.org/u/andreasvarga)\
**Replies:** 11\
**Last updated:** [November 10, 2023, 4:13pm UTC](https://discourse.julialang.org/t/again-errors-with-no-blas-lapack-library-loaded/105943 "2023-11-10T16:13:08Z")

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After one week of a successful registration of a new version of PeriodicSystems, I am trying to prepare a new version by performing several commits. Running the tests, the following error pops up repeatedly Error: no BL…

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## [Automatic building of a vector containing modified instances of a structure](https://discourse.julialang.org/t/automatic-building-of-a-vector-containing-modified-instances-of-a-structure/106038)

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**Author:** [@matnbo](https://discourse.julialang.org/u/matnbo)\
**Replies:** 4\
**Last updated:** [November 10, 2023, 3:59pm UTC](https://discourse.julialang.org/t/automatic-building-of-a-vector-containing-modified-instances-of-a-structure/106038 "2023-11-10T15:59:49Z")

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Dear all I have the following structure MyPar (this is a reproductible fictive example): Base.@kwdef struct MyPar n1::Int = 1 ep::Float64 = .01 co::Float64 = 1. dg::Int = 3 it::Bool = false end jul…

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## [Plotting polyhedron with Makie](https://discourse.julialang.org/t/plotting-polyhedron-with-makie/41306)

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**Author:** [@jerjorg](https://discourse.julialang.org/u/jerjorg)\
**Replies:** 4\
**Last updated:** [November 10, 2023, 3:49pm UTC](https://discourse.julialang.org/t/plotting-polyhedron-with-makie/41306 "2023-11-10T15:49:52Z")

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I am new to Julia and my question and problem may be really simple. I am trying to plot a polyhedron with Makie. I have been following the examples provided by the documentation for the Polyhedra package here and here, b…

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## [JuliaCon (Global) 2024 Announcement: Dates and Venue](https://discourse.julialang.org/t/juliacon-global-2024-announcement-dates-and-venue/106039)

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**Author:** [@ranjan](https://discourse.julialang.org/u/ranjan)\
**Replies:** 0\
**Last updated:** [November 10, 2023, 3:12pm UTC](https://discourse.julialang.org/t/juliacon-global-2024-announcement-dates-and-venue/106039 "2023-11-10T15:12:16Z")

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Hi everyone, This is the announce the dates and venue for JuliaCon 2024. JuliaCon 2024 will be held at the Philips Stadion, Eindhoven on the 10th, 11th and 12th of July 2024. Workshops are expected to be day before and…

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## [Memoized inverse function through bisection](https://discourse.julialang.org/t/memoized-inverse-function-through-bisection/106027)

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**Author:** [@lrnv](https://discourse.julialang.org/u/lrnv)\
**Replies:** 10\
**Last updated:** [November 10, 2023, 2:31pm UTC](https://discourse.julialang.org/t/memoized-inverse-function-through-bisection/106027 "2023-11-10T14:31:01Z")

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Hey, I am trying to implement some memoized version of a inversion algorithm by bisection, but i currently hit a stackoverflow and i cannot understand why : struct MemoizedInverse{Tf,Tstore} f::Tf store::Tstore…

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## [Why am I getting type instability?](https://discourse.julialang.org/t/why-am-i-getting-type-instability/106020)

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**Author:** [@f.ij](https://discourse.julialang.org/u/f.ij)\
**Replies:** 4\
**Last updated:** [November 10, 2023, 1:58pm UTC](https://discourse.julialang.org/t/why-am-i-getting-type-instability/106020 "2023-11-10T13:58:46Z")

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I’m trying to access linked entries in a sparse matrix where only the values change and thought it would be faster to save the locations of the values, but accessing them like this is much slower than just matrix indexin…

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## [Different memory usage under Windows and linux?](https://discourse.julialang.org/t/different-memory-usage-under-windows-and-linux/105984)

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**Author:** [@Ali\_Vahdati](https://discourse.julialang.org/u/Ali_Vahdati)\
**Replies:** 11\
**Last updated:** [November 10, 2023, 1:51pm UTC](https://discourse.julialang.org/t/different-memory-usage-under-windows-and-linux/105984 "2023-11-10T13:51:01Z")

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I am trying to run a simulation using EvoDynamics.jl, a package I wrote myself. The simulation is quite complicated, so I am putting the code here. The problem I am facing is different memory usage under Windows vs Ubun…

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## [Building sets of matching entries in a dataset to explore interaction effects](https://discourse.julialang.org/t/building-sets-of-matching-entries-in-a-dataset-to-explore-interaction-effects/105940)

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**Author:** [@BryanFrost25](https://discourse.julialang.org/u/BryanFrost25)\
**Replies:** 4\
**Last updated:** [November 10, 2023, 1:33pm UTC](https://discourse.julialang.org/t/building-sets-of-matching-entries-in-a-dataset-to-explore-interaction-effects/105940 "2023-11-10T13:33:05Z")

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Here’s the relevant code from a toy problem I’m working with: ‘’‘#Inputs data = \[1 1; 1 1; 0 1; 0 1; 0 0; 1 0; 0 0; 0 0\] C = \[“A”,“B”\]; Interactions = \[\[1,2\],\[5,7,8\]\]’‘’ I’m trying to build sets of indices co…

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## [Best practice for managing multiple projects with package/module dependency](https://discourse.julialang.org/t/best-practice-for-managing-multiple-projects-with-package-module-dependency/105971)

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**Author:** [@yhchang96](https://discourse.julialang.org/u/yhchang96)\
**Replies:** 3\
**Last updated:** [November 10, 2023, 1:27pm UTC](https://discourse.julialang.org/t/best-practice-for-managing-multiple-projects-with-package-module-dependency/105971 "2023-11-10T13:27:45Z")

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Suppose I have a project directory called ProjectA where I have created the module CoreFunctions.jl (which requires some common packages like DifferentialEquations.jl), which basically provides the core functionality for…

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## [OpenMPI+Threading: Segfault in compilation?](https://discourse.julialang.org/t/openmpi-threading-segfault-in-compilation/105881)

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**Author:** [@mmesiti](https://discourse.julialang.org/u/mmesiti)\
**Replies:** 7\
**Last updated:** [November 10, 2023, 1:23pm UTC](https://discourse.julialang.org/t/openmpi-threading-segfault-in-compilation/105881 "2023-11-10T13:23:13Z")

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I have a package that uses multithreading (with Threads.@threads) and I am trying to parallelize it further using MPI.jl, and it segfaults when I run it on our HPC cluster (using the installation of OpenMPI 4.1.5 provide…

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