# Latest

**URL:** https://discourse.julialang.org/latest.md?page=36

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

**Page:** 37

---

## [Another case of poor vectorization](https://discourse.julialang.org/t/another-case-of-poor-vectorization/136778)

<div class="topic-metadata">

**Author:** [@matthias314](https://discourse.julialang.org/u/matthias314)\
**Replies:** 1\
**Last updated:** [April 19, 2026, 2:08pm UTC](https://discourse.julialang.org/t/another-case-of-poor-vectorization/136778 "2026-04-19T14:08:54Z")

</div>

I see poor vectorization when creating ranges as tuples. The flavor is similar to this issue, but the details are different. This time there are no comparisons involved (which were the culprit in the linked post). funct…

---

## [In Julia, I accidentally typed "\<tab\> \<tab\>". What a nice surprise!](https://discourse.julialang.org/t/in-julia-i-accidentally-typed-tab-tab-what-a-nice-surprise/136762)

<div class="topic-metadata">

**Author:** [@Tigerbyte](https://discourse.julialang.org/u/Tigerbyte)\
**Replies:** 1\
**Last updated:** [April 19, 2026, 4:42am UTC](https://discourse.julialang.org/t/in-julia-i-accidentally-typed-tab-tab-what-a-nice-surprise/136762 "2026-04-19T04:42:02Z")

</div>

see topic as shown at the top.

---

## [Compare two Turing models with LOO: SE is NaN](https://discourse.julialang.org/t/compare-two-turing-models-with-loo-se-is-nan/102269)

<div class="topic-metadata">

**Author:** [@DominiqueMakowski](https://discourse.julialang.org/u/DominiqueMakowski)\
**Replies:** 7\
**Last updated:** [April 19, 2026, 1:17am UTC](https://discourse.julialang.org/t/compare-two-turing-models-with-loo-se-is-nan/102269 "2026-04-19T01:17:20Z")

</div>

I am trying to compare two SequentialSamplingModels with loo using ParetoSmooth.jl, but I think I am doing something wrong: using Turing using SequentialSamplingModels using Random using Distributions using DataFrames u…

---

## [Serving WGLMakie Plots with Observables via Oxygen Server Having Websocket Connection to Bonito](https://discourse.julialang.org/t/serving-wglmakie-plots-with-observables-via-oxygen-server-having-websocket-connection-to-bonito/136764)

<div class="topic-metadata">

**Author:** [@Sumfun](https://discourse.julialang.org/u/Sumfun)\
**Replies:** 3\
**Last updated:** [April 18, 2026, 11:48pm UTC](https://discourse.julialang.org/t/serving-wglmakie-plots-with-observables-via-oxygen-server-having-websocket-connection-to-bonito/136764 "2026-04-18T23:48:18Z")

</div>

Challenge - Serving WGLMakie plots with observables via Oxygen using a websocket connection to Bonito. The issue is that Oxygen serves a static image without observables. It appears that the initial Session ID from Bonit…

---

## [MTK - structurally singular initialization?](https://discourse.julialang.org/t/mtk-structurally-singular-initialization/136771)

<div class="topic-metadata">

**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 0\
**Last updated:** [April 18, 2026, 8:06pm UTC](https://discourse.julialang.org/t/mtk-structurally-singular-initialization/136771 "2026-04-18T20:06:40Z")

</div>

I have a somewhat complex model constructed from my own components. Doing mtkcompile produces a system with 18 unknowns and 18 equations: 14 DEs and 4 AEs. When I create the ODEProblem, I am told: Warning: The initiali…

---

## [LLVM Cannot select: v16bf16 = insert\_subvector on Float32→BFloat16 vector store (Julia 1.12.6, znver5)](https://discourse.julialang.org/t/llvm-cannot-select-v16bf16-insert-subvector-on-float32-bfloat16-vector-store-julia-1-12-6-znver5/136766)

<div class="topic-metadata">

**Author:** [@cscherrer](https://discourse.julialang.org/u/cscherrer)\
**Replies:** 3\
**Last updated:** [April 18, 2026, 5:20pm UTC](https://discourse.julialang.org/t/llvm-cannot-select-v16bf16-insert-subvector-on-float32-bfloat16-vector-store-julia-1-12-6-znver5/136766 "2026-04-18T17:20:50Z")

</div>

Hello all — is this a known LLVM codegen bug? Minimal repro using BFloat16s: BFloat16 function f!(dst, src) for j in eachindex(dst) dst\[j\] = src\[j\] end end f!(Vector{BFloat16}(undef, 16), rand(Float32…

---

## [Compilation behavior in the multi-threading context](https://discourse.julialang.org/t/compilation-behavior-in-the-multi-threading-context/136632)

<div class="topic-metadata">

**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 3\
**Last updated:** [April 18, 2026, 3:09pm UTC](https://discourse.julialang.org/t/compilation-behavior-in-the-multi-threading-context/136632 "2026-04-18T15:09:18Z")

</div>

Oftentimes compilation takes some time before running the main code. Given the following code function fn(x, y, z) # some heavy work that needs to be compiled end spawn\_fn(a...) = Threads.@spawn(fn(a...)) function …

---

## [GC error (probable corruption)](https://discourse.julialang.org/t/gc-error-probable-corruption/13612)

<div class="topic-metadata">

**Author:** [@odow](https://discourse.julialang.org/u/odow)\
**Replies:** 14\
**Last updated:** [April 18, 2026, 1:18pm UTC](https://discourse.julialang.org/t/gc-error-probable-corruption/13612 "2026-04-18T13:18:26Z")

</div>

I’m stuggling to reproduce a gc related error on Julia v0.7 and v1.0, Windows x86. (But notably, not Julia v0.6.) The tests for GLPK.jl fail with the following error. (Here is the Appveyor log.) Allocations: 2388187 (P…

---

## [Where is the lowering of end within \[ \] documented](https://discourse.julialang.org/t/where-is-the-lowering-of-end-within-documented/136736)

<div class="topic-metadata">

**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 7\
**Last updated:** [April 18, 2026, 9:23am UTC](https://discourse.julialang.org/t/where-is-the-lowering-of-end-within-documented/136736 "2026-04-18T09:23:33Z")

</div>

Where is the lowering of end within \[\] documented? Ie the fact that it is assigned a value from lastindex, as in julia\> Meta.@lower (1:4)\[min(end, 5)\] :($(Expr(:thunk, CodeInfo( 1 ─ %1 = Main.:(:) │ %2 = dynamic (%1…

---

## [90% of Ipopt run time is spent in Hessian/constraints evaluation, very little time in linear solver. Is it normal?](https://discourse.julialang.org/t/90-of-ipopt-run-time-is-spent-in-hessian-constraints-evaluation-very-little-time-in-linear-solver-is-it-normal/136708)

<div class="topic-metadata">

**Author:** [@Ceserik](https://discourse.julialang.org/u/Ceserik)\
**Replies:** 11\
**Last updated:** [April 18, 2026, 7:55am UTC](https://discourse.julialang.org/t/90-of-ipopt-run-time-is-spent-in-hessian-constraints-evaluation-very-little-time-in-linear-solver-is-it-normal/136708 "2026-04-18T07:55:51Z")

</div>

Hello, I have been trying to improve my solve time for nonlinear optimal control problem , it is a tool for solving minimum lap time for a race car GitHub - ceserik/SLapSim.jl: Scalable laptime simulator · GitHub. I am…

---

## [Pluto PDF and printing](https://discourse.julialang.org/t/pluto-pdf-and-printing/65055)

<div class="topic-metadata">

**Author:** [@Allan\_Baker](https://discourse.julialang.org/u/Allan_Baker)\
**Replies:** 8\
**Last updated:** [April 17, 2026, 7:42pm UTC](https://discourse.julialang.org/t/pluto-pdf-and-printing/65055 "2026-04-17T19:42:42Z")

</div>

Is there a way to make the Pluto screen that shows in the browser WYSIWYG when printed or saved to PDF? Things look bad when I print to printer or PDF from Pluto. Many times the cells are squished up. I’m using firefo…

---

## [Replacing MATLAB/Octave with Julia](https://discourse.julialang.org/t/replacing-matlab-octave-with-julia/136558)

<div class="topic-metadata">

**Author:** [@AntonioBigazzi](https://discourse.julialang.org/u/AntonioBigazzi)\
**Replies:** 4\
**Last updated:** [April 17, 2026, 7:24pm UTC](https://discourse.julialang.org/t/replacing-matlab-octave-with-julia/136558 "2026-04-17T19:24:24Z")

</div>

I’d love to move to Julia, but MATLAB/Octave has a feature that is indispensable to me: the echo of each instruction ( unless terminated with a ; ) ax = -0.8 ay = 0.6 bx = 0.7241 etc. Is there an eq…

---

## [Makie: how to make plotted elements be exactly up to figure edges](https://discourse.julialang.org/t/makie-how-to-make-plotted-elements-be-exactly-up-to-figure-edges/136750)

<div class="topic-metadata">

**Author:** [@Datseris](https://discourse.julialang.org/u/Datseris)\
**Replies:** 3\
**Last updated:** [April 17, 2026, 5:56pm UTC](https://discourse.julialang.org/t/makie-how-to-make-plotted-elements-be-exactly-up-to-figure-edges/136750 "2026-04-17T17:56:25Z")

</div>

This is the figure I am producing: but I want the left side of the plotted elements go up to exactly the very last pixel of the figure. I am not able to figure out how to achieve that. I am doing: t = 0:100 x = cos.…

---

## [Time to build system and problem is slower in Julia 1.12 with MTKv11](https://discourse.julialang.org/t/time-to-build-system-and-problem-is-slower-in-julia-1-12-with-mtkv11/135536)

<div class="topic-metadata">

**Author:** [@Wen-Wei\_Tseng](https://discourse.julialang.org/u/Wen-Wei_Tseng)\
**Replies:** 12\
**Last updated:** [April 17, 2026, 3:23pm UTC](https://discourse.julialang.org/t/time-to-build-system-and-problem-is-slower-in-julia-1-12-with-mtkv11/135536 "2026-04-17T15:23:38Z")

</div>

Hi, while I was trying the new version (v11) of ModelingToolkit.jl , I noticed it took longer to build the ODE system and problem under Julia 1.12. Here is the GitHub actions workflow running the script using ModelingT…

---

## [This used to work (Tk, Image, ImageView)](https://discourse.julialang.org/t/this-used-to-work-tk-image-imageview/136745)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 5\
**Last updated:** [April 17, 2026, 2:04pm UTC](https://discourse.julialang.org/t/this-used-to-work-tk-image-imageview/136745 "2026-04-17T14:04:56Z")

</div>

using NIfTI, Tk, Images, ImageView function mriview(ni::NIVolume, xy=\["x", "z"\], zoom::Int=5) img = Image(ni.raw, \["spatialorder" =\> \["x", "y", "z"\], "timedim" =\> 4, "colorspace" =\> "Gray", …

---

## [Update observables only when slider is released](https://discourse.julialang.org/t/update-observables-only-when-slider-is-released/136742)

<div class="topic-metadata">

**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 2\
**Last updated:** [April 17, 2026, 11:55am UTC](https://discourse.julialang.org/t/update-observables-only-when-slider-is-released/136742 "2026-04-17T11:55:39Z")

</div>

For expensive computations, how can we slide on a Slider without triggering all intermediate values? One workaround is to add a separate Toggle to turn the computation on/off, but that adds unnecessary logic to the appli…

---

## [Seeking Community Input on Package Maintenance Status Labels & Criteria](https://discourse.julialang.org/t/seeking-community-input-on-package-maintenance-status-labels-criteria/135177)

<div class="topic-metadata">

**Author:** [@kosuri-indu](https://discourse.julialang.org/u/kosuri-indu)\
**Replies:** 11\
**Last updated:** [April 17, 2026, 7:26am UTC](https://discourse.julialang.org/t/seeking-community-input-on-package-maintenance-status-labels-criteria/135177 "2026-04-17T07:26:51Z")

</div>

Hey everyone :waving\_hand: I am currently working on an ecosystem-wide audit of the JuliaHealth organization as part of a NumFOCUS Small Development Grant. One part of this work involves summarizing the maintenance stat…

---

## ["isomorphic" datastructures](https://discourse.julialang.org/t/isomorphic-datastructures/136733)

<div class="topic-metadata">

**Author:** [@Philippe\_Maincon1](https://discourse.julialang.org/u/Philippe_Maincon1)\
**Replies:** 5\
**Last updated:** [April 17, 2026, 5:17am UTC](https://discourse.julialang.org/t/isomorphic-datastructures/136733 "2026-04-17T05:17:35Z")

</div>

Hi, Here is a X/Y problem Problem X: I handle data structures which are a nesting of Tuples, NamedTuples and SVector, of various Reals. I want to create a function isomorph(a,b) that is equivalent to typeof(a)==typeo…

---

## [Changing the behavior of \`min\` in \`julia-actions/setup-julia\`](https://discourse.julialang.org/t/changing-the-behavior-of-min-in-julia-actions-setup-julia/136046)

<div class="topic-metadata">

**Author:** [@dilumaluthge](https://discourse.julialang.org/u/dilumaluthge)\
**Replies:** 15\
**Last updated:** [April 17, 2026, 1:27am UTC](https://discourse.julialang.org/t/changing-the-behavior-of-min-in-julia-actions-setup-julia/136046 "2026-04-17T01:27:46Z")

</div>

This post is about the use of julia-actions/setup-julia in GitHub Actions CI. The current major version is setup-julia@v2. Suppose that your Project.toml file includes this compat entry for Julia: \[compat\] julia = "1.1…

---

## [SciML collocation BVP solvers overwrite the initial guess - bug or feature?](https://discourse.julialang.org/t/sciml-collocation-bvp-solvers-overwrite-the-initial-guess-bug-or-feature/136715)

<div class="topic-metadata">

**Author:** [@ThermionicsGuy](https://discourse.julialang.org/u/ThermionicsGuy)\
**Replies:** 6\
**Last updated:** [April 16, 2026, 4:36pm UTC](https://discourse.julialang.org/t/sciml-collocation-bvp-solvers-overwrite-the-initial-guess-bug-or-feature/136715 "2026-04-16T16:36:37Z")

</div>

I’ve encountered a behavior that I didn’t expect when solving BVPs with SciML collocation methods and using the continuation method. When you call “solve” and are using a previous solution object as the initial guess, th…

---

## [\`legend\_groupclick = "toggleitem"\` doesn't seem to work in PlotlyJS](https://discourse.julialang.org/t/legend-groupclick-toggleitem-doesnt-seem-to-work-in-plotlyjs/76851)

<div class="topic-metadata">

**Author:** [@Mo-Gul](https://discourse.julialang.org/u/Mo-Gul)\
**Replies:** 5\
**Last updated:** [April 16, 2026, 3:19pm UTC](https://discourse.julialang.org/t/legend-groupclick-toggleitem-doesnt-seem-to-work-in-plotlyjs/76851 "2026-04-16T15:19:48Z")

</div>

Currently legend\_groupclick="toggleitem" doesn’t seem to work as can be tested in the result of using PlotlyJS function getData() x = range(start=0, stop=10, length=101) y1 = sin.(x) y2 = sin.(x) .- 0.1 …

---

## [Replicating predictive margins for a categorical variable](https://discourse.julialang.org/t/replicating-predictive-margins-for-a-categorical-variable/136741)

<div class="topic-metadata">

**Author:** [@Rodrigo](https://discourse.julialang.org/u/Rodrigo)\
**Replies:** 0\
**Last updated:** [April 16, 2026, 2:59pm UTC](https://discourse.julialang.org/t/replicating-predictive-margins-for-a-categorical-variable/136741 "2026-04-16T14:59:10Z")

</div>

I am new with Julia, my background is Stata. I am looking a way for get marginal mean for a categorical variable (Stata: margins i.group). I am using categorical variable for variable group, then my goal its get probab…

---

## [How to change the default colors of a series in Makie](https://discourse.julialang.org/t/how-to-change-the-default-colors-of-a-series-in-makie/136738)

<div class="topic-metadata">

**Author:** [@xor0110](https://discourse.julialang.org/u/xor0110)\
**Replies:** 0\
**Last updated:** [April 16, 2026, 12:54pm UTC](https://discourse.julialang.org/t/how-to-change-the-default-colors-of-a-series-in-makie/136738 "2026-04-16T12:54:00Z")

</div>

I’ve found some information about using set\_theme!, but it’s still not clear to me what to do and I would love to find a code snippet. How do I change the default colors used to plot a series in Makie?

---

## [Post SVG image on discourse.julia](https://discourse.julialang.org/t/post-svg-image-on-discourse-julia/10991)

<div class="topic-metadata">

**Author:** [@LaurentPlagne](https://discourse.julialang.org/u/LaurentPlagne)\
**Replies:** 1\
**Last updated:** [April 16, 2026, 12:16pm UTC](https://discourse.julialang.org/t/post-svg-image-on-discourse-julia/10991 "2026-04-16T12:16:52Z")

</div>

Hi, would it be possible to modify the Julia discourse setting file to allow svg images to be posted ?

---

## [Claims of breaking 92% of SHA-256 can't be good news for Julia!](https://discourse.julialang.org/t/claims-of-breaking-92-of-sha-256-cant-be-good-news-for-julia/136714)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 6\
**Last updated:** [April 16, 2026, 12:11pm UTC](https://discourse.julialang.org/t/claims-of-breaking-92-of-sha-256-cant-be-good-news-for-julia/136714 "2026-04-16T12:11:50Z")

</div>

Make that 100% - that would break everything, wouldn’t it?

---

## [Radiobuttons and checkboxes in Makie](https://discourse.julialang.org/t/radiobuttons-and-checkboxes-in-makie/95017)

<div class="topic-metadata">

**Author:** [@vladdez](https://discourse.julialang.org/u/vladdez)\
**Replies:** 8\
**Last updated:** [April 16, 2026, 10:41am UTC](https://discourse.julialang.org/t/radiobuttons-and-checkboxes-in-makie/95017 "2026-04-16T10:41:44Z")

</div>

How could I create radiobuttons and checkboxes in Makie?

---

## [Anyone into experimental rock music 🎶 over here ? Angine de Poitrine!](https://discourse.julialang.org/t/anyone-into-experimental-rock-music-over-here-angine-de-poitrine/136202)

<div class="topic-metadata">

**Author:** [@franckgaga](https://discourse.julialang.org/u/franckgaga)\
**Replies:** 14\
**Last updated:** [April 16, 2026, 10:08am UTC](https://discourse.julialang.org/t/anyone-into-experimental-rock-music-over-here-angine-de-poitrine/136202 "2026-04-16T10:08:22Z")

</div>

As there are many experimentalists over here, I’m guessing there might be some people that are also into experimental music. :grinning\_face\_with\_smiling\_eyes: You may have heard about Angine de Poitrine? That’s a two-me…

---

## [Documenter.jl doctest does not apply filter as expected](https://discourse.julialang.org/t/documenter-jl-doctest-does-not-apply-filter-as-expected/136706)

<div class="topic-metadata">

**Author:** [@phx](https://discourse.julialang.org/u/phx)\
**Replies:** 4\
**Last updated:** [April 16, 2026, 9:57am UTC](https://discourse.julialang.org/t/documenter-jl-doctest-does-not-apply-filter-as-expected/136706 "2026-04-16T09:57:45Z")

</div>

Hi all, I am writing the documentation for a package of mine, and in a doctest I have this output: 11-element Vector{ComplexF64}: 0.0 + 0.0im -1.617576049847552e-6 + 6.617439891157473e-23im -…

---

## [Function works when called in Pluto, but not when copy-pasted into a package](https://discourse.julialang.org/t/function-works-when-called-in-pluto-but-not-when-copy-pasted-into-a-package/136731)

<div class="topic-metadata">

**Author:** [@CameraObscura42](https://discourse.julialang.org/u/CameraObscura42)\
**Replies:** 3\
**Last updated:** [April 16, 2026, 12:18am UTC](https://discourse.julialang.org/t/function-works-when-called-in-pluto-but-not-when-copy-pasted-into-a-package/136731 "2026-04-16T00:18:45Z")

</div>

It’s going to take a while to extract a MWE from the package and pluto notebook, so I’ll post the question first in case I get lucky. Note that I am self-taught and relatively new to Julia, so my code is probably bad. I…

---

## [Bottleneck of JuMP](https://discourse.julialang.org/t/bottleneck-of-jump/136609)

<div class="topic-metadata">

**Author:** [@ttx002000](https://discourse.julialang.org/u/ttx002000)\
**Replies:** 24\
**Last updated:** [April 15, 2026, 8:38pm UTC](https://discourse.julialang.org/t/bottleneck-of-jump/136609 "2026-04-15T20:38:55Z")

</div>

I am solving a SDP problem using JuMP and the associated MosekTools. The basic pattern is this:\` NQ=9 Nk=9 nred=4 Dmatrix = Vector{Any}(undef, 3) Dmatrix\[1\] = Vector{Any}(undef, NQ) # uuuu channel Dmatr…

[Previous page](https://discourse.julialang.org/latest.md?page=35)

[Next page](https://discourse.julialang.org/latest.md?page=37)