# Latest

**URL:** https://discourse.julialang.org/latest.md?page=398

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

**Page:** 399

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## [Help wrapping Symbolics.jl for RCall](https://discourse.julialang.org/t/help-wrapping-symbolics-jl-for-rcall/114935)

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**Author:** [@sdwfrost](https://discourse.julialang.org/u/sdwfrost)\
**Replies:** 1\
**Last updated:** [May 30, 2024, 4:59pm UTC](https://discourse.julialang.org/t/help-wrapping-symbolics-jl-for-rcall/114935 "2024-05-30T16:59:20Z")

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I have a problem that fails due to Num (from Symbolics.jl) not being automatically wrapped by RCall.jl. Here’s a minimal example that throws the error: using Symbolics using RCall @variables x @rput x ERROR: MethodErr…

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## [\[Workgroup\] JuliaHealth Meeting – May 30th, 2024](https://discourse.julialang.org/t/workgroup-juliahealth-meeting-may-30th-2024/114805)

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**Author:** [@TheCedarPrince](https://discourse.julialang.org/u/TheCedarPrince)\
**Replies:** 2\
**Last updated:** [May 30, 2024, 4:03pm UTC](https://discourse.julialang.org/t/workgroup-juliahealth-meeting-may-30th-2024/114805 "2024-05-30T16:03:13Z")

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Hi everyone! :wave: It is time for another JuliaHealth community call very soon! After having been on hiatus since April, we are back with another monthly call! We have an exciting schedule already lined up for this mon…

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## [Interpolation Package that works within Symbolics/MTK](https://discourse.julialang.org/t/interpolation-package-that-works-within-symbolics-mtk/114970)

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**Author:** [@HSnowden](https://discourse.julialang.org/u/HSnowden)\
**Replies:** 2\
**Last updated:** [May 30, 2024, 3:56pm UTC](https://discourse.julialang.org/t/interpolation-package-that-works-within-symbolics-mtk/114970 "2024-05-30T15:56:30Z")

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Hello, I have a use case that requires an interpolation to be used from within a Modeling Toolkit Model as well as Symbolics Num’s. From what I understand the only package that can do this is DataInterpolations.jl, at l…

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## [Trajectory Optimization using Pseudospectral collocation](https://discourse.julialang.org/t/trajectory-optimization-using-pseudospectral-collocation/114017)

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**Author:** [@DTdev](https://discourse.julialang.org/u/DTdev)\
**Replies:** 10\
**Last updated:** [May 30, 2024, 3:46pm UTC](https://discourse.julialang.org/t/trajectory-optimization-using-pseudospectral-collocation/114017 "2024-05-30T15:46:13Z")

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Hi everyone! I am currently trying to solve a simple trajectory optimization problem using pseudospectral collocation or orthogonal collocation. I have written a simple UAV simulation using JuMP.jl with a moving obstac…

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## [Neural ODEs and ODE parameter estimation](https://discourse.julialang.org/t/neural-odes-and-ode-parameter-estimation/114950)

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**Author:** [@usiam](https://discourse.julialang.org/u/usiam)\
**Replies:** 3\
**Last updated:** [May 30, 2024, 3:35pm UTC](https://discourse.julialang.org/t/neural-odes-and-ode-parameter-estimation/114950 "2024-05-30T15:35:10Z")

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I’m trying to do some parameter estimation of parameters in a set of coupled (stiff) differential equations by using some limited data and found out about Julia’s ODE suite. Looking through some of the examples, such as…

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## [Changes to PkgServers storage backend](https://discourse.julialang.org/t/changes-to-pkgservers-storage-backend/112378)

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**Author:** [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Replies:** 25\
**Last updated:** [May 30, 2024, 3:23pm UTC](https://discourse.julialang.org/t/changes-to-pkgservers-storage-backend/112378 "2024-05-30T15:23:26Z")

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We are experimenting with some changes to the storage backend of the package servers\[1\]. These changes are currently live on https://staging.pkg.julialang.org. It would be great if some of you could beta test the new ser…

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## [AnalyticComb.jl - Analytic Combinatorics in Julia](https://discourse.julialang.org/t/analyticcomb-jl-analytic-combinatorics-in-julia/104196)

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**Author:** [@fargolo](https://discourse.julialang.org/u/fargolo)\
**Replies:** 9\
**Last updated:** [May 30, 2024, 2:18pm UTC](https://discourse.julialang.org/t/analyticcomb-jl-analytic-combinatorics-in-julia/104196 "2024-05-30T14:18:38Z")

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Hello, fellow Julia enthusiasts, I started to implement symbolic methods for combinatorial problems ( GitHub - fargolo/AnalyticComb.jl: Solutions for combinatorial problems using symbolic methods. ) following Flajolet & …

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## [Help with CUDA Error](https://discourse.julialang.org/t/help-with-cuda-error/114946)

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**Author:** [@19fitzna](https://discourse.julialang.org/u/19fitzna)\
**Replies:** 5\
**Last updated:** [May 30, 2024, 2:10pm UTC](https://discourse.julialang.org/t/help-with-cuda-error/114946 "2024-05-30T14:10:52Z")

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Hello! I’m still relatively new to Julia so I apologize if this is a stupid question. I am currently trying to implement a GPU backend for training universal differential equations. I just updated to Julia 1.10.3, and h…

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## [Base.return\_types and \`Test.@inferred\` conditionally failing unlike \`@code\_warntype\`](https://discourse.julialang.org/t/base-return-types-and-test-inferred-conditionally-failing-unlike-code-warntype/114902)

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**Author:** [@Benny](https://discourse.julialang.org/u/Benny)\
**Replies:** 6\
**Last updated:** [May 30, 2024, 6:28am UTC](https://discourse.julialang.org/t/base-return-types-and-test-inferred-conditionally-failing-unlike-code-warntype/114902 "2024-05-30T06:28:57Z")

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Experimenting with world age and ran into a weird thing. This is the session that makes sense: julia\> function evalbad(i) ex = :(globali() = $i) eval(ex) # evaluates new global method at runtime …

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## [Random sampling with rand(Uniform(0,1), n)](https://discourse.julialang.org/t/random-sampling-with-rand-uniform-0-1-n/114962)

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**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 4\
**Last updated:** [May 30, 2024, 12:07pm UTC](https://discourse.julialang.org/t/random-sampling-with-rand-uniform-0-1-n/114962 "2024-05-30T12:07:07Z")

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Hello everyone, I’m trying to collect some random samples from Uniform distribution Uniform(0,1) . What I observe is that most of values are around 10^-1 range so like 0.1, 0.3, 0.7 something like that but it rarely hi…

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## [Makie DataInspector logscale](https://discourse.julialang.org/t/makie-datainspector-logscale/114955)

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**Author:** [@Oto\_Brzobohaty](https://discourse.julialang.org/u/Oto_Brzobohaty)\
**Replies:** 2\
**Last updated:** [May 30, 2024, 11:27am UTC](https://discourse.julialang.org/t/makie-datainspector-logscale/114955 "2024-05-30T11:27:45Z")

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Hi, I tried to use Makie DataInspector for logscale graph and it is not workin, MWE: fig = Figure() Axis(fig\[1,1\], xscale = log10) lines!(range(0.01, 0.99, length = 200), 1:200) DataInspector(fig) ERROR: Error …

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## [How to write generic simulations with KernelAbstractions](https://discourse.julialang.org/t/how-to-write-generic-simulations-with-kernelabstractions/114963)

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**Author:** [@SteffenPL](https://discourse.julialang.org/u/SteffenPL)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 11:09am UTC](https://discourse.julialang.org/t/how-to-write-generic-simulations-with-kernelabstractions/114963 "2024-05-30T11:09:30Z")

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I’m working on a project that should work with CUDA.jl and Metal.jl at the same time. Basically some simulation scripts, so, the user is me or collaborators running code (not somebody installing a package I make). With …

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## [Second-order autodiff: which combinations should work?](https://discourse.julialang.org/t/second-order-autodiff-which-combinations-should-work/114892)

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**Author:** [@gdalle](https://discourse.julialang.org/u/gdalle)\
**Replies:** 13\
**Last updated:** [May 30, 2024, 10:13am UTC](https://discourse.julialang.org/t/second-order-autodiff-which-combinations-should-work/114892 "2024-05-30T10:13:09Z")

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Hey there! My package DifferentiationInterface.jl provides the necessary infrastructure for second-order automatic differentiation (e.g. Hessians). It allows you to combine arbitrary pairs of AD backends, but of course …

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## [Julia 1.10.4 testing period](https://discourse.julialang.org/t/julia-1-10-4-testing-period/114958)

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**Author:** [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 9:11am UTC](https://discourse.julialang.org/t/julia-1-10-4-testing-period/114958 "2024-05-30T09:11:10Z")

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The release-1.10 branch on the Julia repository now contains the set of commits we’re planning to tag as v1.10.4. The list of commits included since v1.10.3 is available here . As a patch release, it should be non-breaki…

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## [Reducing CairoMakie PDF file sizes with PNG integration](https://discourse.julialang.org/t/reducing-cairomakie-pdf-file-sizes-with-png-integration/114948)

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**Author:** [@nari](https://discourse.julialang.org/u/nari)\
**Replies:** 2\
**Last updated:** [May 30, 2024, 8:54am UTC](https://discourse.julialang.org/t/reducing-cairomakie-pdf-file-sizes-with-png-integration/114948 "2024-05-30T08:54:12Z")

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The CairoMakie heatmap is very useful and I use it on a daily basis. However, the file size can be large when output to a pdf file (usually more than a few MB for my usage). By saving the layout, axes, annotations, etc. …

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## [Launching the REPL working group](https://discourse.julialang.org/t/launching-the-repl-working-group/114956)

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**Author:** [@tecosaur](https://discourse.julialang.org/u/tecosaur)\
**Replies:** 0\
**Last updated:** [May 30, 2024, 8:36am UTC](https://discourse.julialang.org/t/launching-the-repl-working-group/114956 "2024-05-30T08:36:27Z")

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Over in #repl on Zulip, the loose clumping of people that comprise the “REPL working group” have been chatting about improving the REPL for a while. We’re now going to be holding the first call this Saturday, at 2024-06…

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## [Makie.jl: plot with log-scale axes](https://discourse.julialang.org/t/makie-jl-plot-with-log-scale-axes/40132)

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**Author:** [@disberd](https://discourse.julialang.org/u/disberd)\
**Replies:** 6\
**Last updated:** [May 30, 2024, 7:49am UTC](https://discourse.julialang.org/t/makie-jl-plot-with-log-scale-axes/40132 "2024-05-30T07:49:51Z")

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Is there a way in Makie.jl to have log-scale for the axes in a plot? I can’t seem to find any mention about it in the official documentation

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## [Resolving name conflicts between my package and other, commonly used packages it does not depend on](https://discourse.julialang.org/t/resolving-name-conflicts-between-my-package-and-other-commonly-used-packages-it-does-not-depend-on/114937)

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**Author:** [@brainandforce](https://discourse.julialang.org/u/brainandforce)\
**Replies:** 5\
**Last updated:** [May 30, 2024, 6:09am UTC](https://discourse.julialang.org/t/resolving-name-conflicts-between-my-package-and-other-commonly-used-packages-it-does-not-depend-on/114937 "2024-05-30T06:09:53Z")

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My package, CliffordNumbers.jl, defines two functions: CliffordNumbers.similar\_type(::Type{C}, ::Type{T}, ::Val{Q}) where {C\<:AbstractCliffordNumber,T\<:Union{Real,Complex},Q} constructs a type similar to C but with typ…

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## [How to get evenly distributed values from Highs](https://discourse.julialang.org/t/how-to-get-evenly-distributed-values-from-highs/114559)

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**Author:** [@himgoy](https://discourse.julialang.org/u/himgoy)\
**Replies:** 9\
**Last updated:** [May 30, 2024, 6:09am UTC](https://discourse.julialang.org/t/how-to-get-evenly-distributed-values-from-highs/114559 "2024-05-30T06:09:20Z")

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Hello Everyone, I am working on a linear programming problem. I want to solve variables for the constraints. The issue is I am able to get feasible values for all my variables from HiGHs for my problem, but these value…

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## [Indentify parameters in an ODEProblem](https://discourse.julialang.org/t/indentify-parameters-in-an-odeproblem/114784)

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**Author:** [@langestefan](https://discourse.julialang.org/u/langestefan)\
**Replies:** 17\
**Last updated:** [May 30, 2024, 6:00am UTC](https://discourse.julialang.org/t/indentify-parameters-in-an-odeproblem/114784 "2024-05-30T06:00:19Z")

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Hello, I have specified a model in Turing.jl as follows: using Turing @model function LGDS(x::AbstractArray, prob, params::Dict, t\_int) # prior distributions σ ~ InverseGamma(2, 3) lC ~ MvNormal(params\[:…

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## [Executing system commands "backtick-like" way in Julia?](https://discourse.julialang.org/t/executing-system-commands-backtick-like-way-in-julia/114890)

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**Author:** [@oOosys](https://discourse.julialang.org/u/oOosys)\
**Replies:** 18\
**Last updated:** [May 30, 2024, 1:31am UTC](https://discourse.julialang.org/t/executing-system-commands-backtick-like-way-in-julia/114890 "2024-05-30T01:31:41Z")

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In Ruby I can put a shell command in backtick quotes and will get the printed output and the exit code as response. How to accomplish the same in Julia with as less prefix and postfix code wrapping the string of the shel…

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## [Any "bridge" between Documenter.jl and YAML.jl in order to document a YAML file?](https://discourse.julialang.org/t/any-bridge-between-documenter-jl-and-yaml-jl-in-order-to-document-a-yaml-file/114909)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 1\
**Last updated:** [May 30, 2024, 12:30am UTC](https://discourse.julialang.org/t/any-bridge-between-documenter-jl-and-yaml-jl-in-order-to-document-a-yaml-file/114909 "2024-05-30T00:30:37Z")

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Ok, I have chosen YAML for the settings of my model. Is there a way I can format the comments in YAML in a certain way in order to document the settings, parse these special comments and let them end up in a make\_doc Do…

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## [Placing Unicode texts anywhere within Julia code](https://discourse.julialang.org/t/placing-unicode-texts-anywhere-within-julia-code/114888)

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**Author:** [@oOosys](https://discourse.julialang.org/u/oOosys)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 11:01pm UTC](https://discourse.julialang.org/t/placing-unicode-texts-anywhere-within-julia-code/114888 "2024-05-29T23:01:20Z")

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I am migrating from Python where I had been using triple quoted strings of two kinds to insert multi-line comments and one-line strings of both kinds which were all differently highlighted anywhere in the code as standal…

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## [Julia v1.11.0-beta2 is now available](https://discourse.julialang.org/t/julia-v1-11-0-beta2-is-now-available/114938)

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**Author:** [@ararslan](https://discourse.julialang.org/u/ararslan)\
**Replies:** 0\
**Last updated:** [May 29, 2024, 9:05pm UTC](https://discourse.julialang.org/t/julia-v1-11-0-beta2-is-now-available/114938 "2024-05-29T21:05:44Z")

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The Julia developers are pleased to announce that the second beta release for Julia v1.11.0 is now available. You can download binaries using JuliaUp or from https://julialang.org/downloads/ in the “upcoming release” sec…

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## [Using Quarto to create package documentation](https://discourse.julialang.org/t/using-quarto-to-create-package-documentation/102698)

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**Author:** [@vituri](https://discourse.julialang.org/u/vituri)\
**Replies:** 12\
**Last updated:** [May 29, 2024, 8:41pm UTC](https://discourse.julialang.org/t/using-quarto-to-create-package-documentation/102698 "2024-05-29T20:41:55Z")

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From what I’ve seem, Documenter.jl is almost the only tool used, because of macros like @docs, index generation, easy github actions and so on. However, coming from R, Quarto seems a much more natural choice to me. With …

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## [Hosting pluto notebooks online - 2024](https://discourse.julialang.org/t/hosting-pluto-notebooks-online-2024/114920)

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**Author:** [@user23804985096787](https://discourse.julialang.org/u/user23804985096787)\
**Replies:** 3\
**Last updated:** [May 29, 2024, 7:15pm UTC](https://discourse.julialang.org/t/hosting-pluto-notebooks-online-2024/114920 "2024-05-29T19:15:39Z")

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this has been asked several times before, but the information seems out-of-date. I would like to run some small pluto notebooks that can be run interactively online without the person viewing it needing to install Julia. …

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## [NLopt Constraint](https://discourse.julialang.org/t/nlopt-constraint/114856)

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**Author:** [@mary](https://discourse.julialang.org/u/mary)\
**Replies:** 4\
**Last updated:** [May 28, 2024, 10:27pm UTC](https://discourse.julialang.org/t/nlopt-constraint/114856 "2024-05-28T22:27:28Z")

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Hi, I am using Nlopt for optimization. my objective function depends on three variables like x1,x2,x3 also I have a constraint which depends on all three variable. I want to do the optimization just for x3 variable. shou…

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## [Help converting a Pytorch tensor to Julia CuArray](https://discourse.julialang.org/t/help-converting-a-pytorch-tensor-to-julia-cuarray/106492)

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**Author:** [@Dale\_James\_Black](https://discourse.julialang.org/u/Dale_James_Black)\
**Replies:** 14\
**Last updated:** [May 29, 2024, 6:09pm UTC](https://discourse.julialang.org/t/help-converting-a-pytorch-tensor-to-julia-cuarray/106492 "2024-05-29T18:09:50Z")

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I am trying to use PythonCall/juliacall to convert a PyTorch tensor to a Julia CuArray directly from the pointer (I want to avoid unnecessary copying if possible). Does anyone know what I am doing wrong, as it seems the …

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## [\[ANN\] Makie@0.21](https://discourse.julialang.org/t/ann-makie-0-21/114678)

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**Author:** [@sdanisch](https://discourse.julialang.org/u/sdanisch)\
**Replies:** 11\
**Last updated:** [May 29, 2024, 4:36pm UTC](https://discourse.julialang.org/t/ann-makie-0-21/114678 "2024-05-29T16:36:32Z")

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We’re happy to announce a new major Makie version with many long awaited features and bug fixes. Line Joints Voxel Unit Support Please read all the details and how to upgrade in the blogpost: https://blog…

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## [Julia \<-\> Python object conversions for relatively complex objects using juliacall](https://discourse.julialang.org/t/julia-python-object-conversions-for-relatively-complex-objects-using-juliacall/114928)

<div class="topic-metadata">

**Author:** [@Eumenes](https://discourse.julialang.org/u/Eumenes)\
**Replies:** 0\
**Last updated:** [May 29, 2024, 4:29pm UTC](https://discourse.julialang.org/t/julia-python-object-conversions-for-relatively-complex-objects-using-juliacall/114928 "2024-05-29T16:29:11Z")

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Hello everyone, This is a pretty long question and it’s pretty complicated (at least to me it is) so I will highly appreciate all answers. I am currently writing a python wrapper around the Extremes.jl package. That pa…

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