# Latest

**URL:** https://discourse.julialang.org/latest.md?page=320

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

**Page:** 321

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## [How to specify 1.11-rc as test target on GitHub?](https://discourse.julialang.org/t/how-to-specify-1-11-rc-as-test-target-on-github/119437)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 10:59pm UTC](https://discourse.julialang.org/t/how-to-specify-1-11-rc-as-test-target-on-github/119437 "2024-09-15T22:59:22Z")

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The title says it all…

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## [Request for advice on workflow in distributed team of scientists](https://discourse.julialang.org/t/request-for-advice-on-workflow-in-distributed-team-of-scientists/119425)

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**Author:** [@Davide98888](https://discourse.julialang.org/u/Davide98888)\
**Replies:** 13\
**Last updated:** [September 15, 2024, 8:45pm UTC](https://discourse.julialang.org/t/request-for-advice-on-workflow-in-distributed-team-of-scientists/119425 "2024-09-15T20:45:25Z")

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Hello I am sorry for the stupid question. I work in a group of scientists in many places. All our work is organised in dropbox, using mac, linux and windows. We do science, code is a necessity, and minimise complexity. …

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## [How to use convexhull in Meshes.jl?](https://discourse.julialang.org/t/how-to-use-convexhull-in-meshes-jl/119440)

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**Author:** [@p\_f](https://discourse.julialang.org/u/p_f)\
**Replies:** 4\
**Last updated:** [September 15, 2024, 7:58pm UTC](https://discourse.julialang.org/t/how-to-use-convexhull-in-meshes-jl/119440 "2024-09-15T19:58:22Z")

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I found the convexhull function in Meshes.jl: convexhull doc The docs description “Convex hull of object.” I have a vector of 2d points: julia\> points 1000-element Vector{Vector{Float64}}: \[0.5090075873973284, 0.793…

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## [GeoMakie: how to plot shapefile lines in the same GeoAxis as a heatmap](https://discourse.julialang.org/t/geomakie-how-to-plot-shapefile-lines-in-the-same-geoaxis-as-a-heatmap/119380)

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**Author:** [@oscarvdvelde](https://discourse.julialang.org/u/oscarvdvelde)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 7:14pm UTC](https://discourse.julialang.org/t/geomakie-how-to-plot-shapefile-lines-in-the-same-geoaxis-as-a-heatmap/119380 "2024-09-15T19:14:03Z")

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I am trying GeoMakie for a simple visualization of KNMI radar data (Netherlands), which comes in netCDF format. The netCDF provides grid values, the x and y axes and the proj4. I am able to successfully plot that georefe…

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## [Symbolics 'solve' command undefined](https://discourse.julialang.org/t/symbolics-solve-command-undefined/118766)

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**Author:** [@Paul\_Warburton](https://discourse.julialang.org/u/Paul_Warburton)\
**Replies:** 26\
**Last updated:** [September 15, 2024, 6:56pm UTC](https://discourse.julialang.org/t/symbolics-solve-command-undefined/118766 "2024-09-15T18:56:08Z")

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I have copied code from the Symbolics package as shown, but I get the ‘solve’ function is undefined. I must be doing something wrong but I do not see what mistake i am m aking. Any help would be appreciated. Thank you …

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## [Changing the faceset where the force is acting to another location and change the Force vector Values](https://discourse.julialang.org/t/changing-the-faceset-where-the-force-is-acting-to-another-location-and-change-the-force-vector-values/119339)

<div class="topic-metadata">

**Author:** [@kings94](https://discourse.julialang.org/u/kings94)\
**Replies:** 2\
**Last updated:** [September 14, 2024, 1:34pm UTC](https://discourse.julialang.org/t/changing-the-faceset-where-the-force-is-acting-to-another-location-and-change-the-force-vector-values/119339 "2024-09-14T13:34:07Z")

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So i am currently tring to run a simulation on a simple beam using the arc length method, where for a certain number of increments a certain load (in the negative x direction) is applied with specific boundary conditions…

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## [Extra memory allocation when using closure with CUDA](https://discourse.julialang.org/t/extra-memory-allocation-when-using-closure-with-cuda/119407)

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**Author:** [@0samuraiE](https://discourse.julialang.org/u/0samuraiE)\
**Replies:** 2\
**Last updated:** [September 15, 2024, 3:51pm UTC](https://discourse.julialang.org/t/extra-memory-allocation-when-using-closure-with-cuda/119407 "2024-09-15T15:51:47Z")

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Hi all. I’ve been wondering about this for a long time, so I’m asking here. I show 2 benchmark functions. The only difference is former’s closure do not receive A as an argument while latter’s receive A. And the res…

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## [Revise Not Working with DrWatson Use Case](https://discourse.julialang.org/t/revise-not-working-with-drwatson-use-case/119360)

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**Author:** [@TI36XPro](https://discourse.julialang.org/u/TI36XPro)\
**Replies:** 1\
**Last updated:** [September 15, 2024, 1:02pm UTC](https://discourse.julialang.org/t/revise-not-working-with-drwatson-use-case/119360 "2024-09-15T13:02:56Z")

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Hello, I am having an issue with Revise. I’ll lay out some context and hopefully that will help illustrate the problem. Let’s say I have a package I am developing called MyPackage. Since I am developing it and frequent…

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## [How to create a new DF with only the rows that contain specific values from two different columns](https://discourse.julialang.org/t/how-to-create-a-new-df-with-only-the-rows-that-contain-specific-values-from-two-different-columns/119431)

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**Author:** [@cocarroll1](https://discourse.julialang.org/u/cocarroll1)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 2:28pm UTC](https://discourse.julialang.org/t/how-to-create-a-new-df-with-only-the-rows-that-contain-specific-values-from-two-different-columns/119431 "2024-09-15T14:28:42Z")

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I want to create a new DF (e.g. df\_2) based on an existing one (e.g. df\_1) which has 9 columns and multiple rows of data. In this new df\_2 I want to have all the data from each row, only when the values from 1 column (e…

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## [What is the difference between these two implementations?](https://discourse.julialang.org/t/what-is-the-difference-between-these-two-implementations/119426)

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**Author:** [@kands-code](https://discourse.julialang.org/u/kands-code)\
**Replies:** 4\
**Last updated:** [September 15, 2024, 1:25pm UTC](https://discourse.julialang.org/t/what-is-the-difference-between-these-two-implementations/119426 "2024-09-15T13:25:25Z")

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I recently came across the programming language Julia, which is a very efficient language with a lot of tools that allow me to complete some tasks easily. But I encountered a problem when learning how to use Julia to wr…

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## [Adding a column to a dataframe and conditionally filling based on another column within the same dataframe](https://discourse.julialang.org/t/adding-a-column-to-a-dataframe-and-conditionally-filling-based-on-another-column-within-the-same-dataframe/119413)

<div class="topic-metadata">

**Author:** [@cocarroll1](https://discourse.julialang.org/u/cocarroll1)\
**Replies:** 4\
**Last updated:** [September 15, 2024, 12:32pm UTC](https://discourse.julialang.org/t/adding-a-column-to-a-dataframe-and-conditionally-filling-based-on-another-column-within-the-same-dataframe/119413 "2024-09-15T12:32:08Z")

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I’m trying to write code to do the following, I’m completely new to Julia and coding in general so really struggling. I have a data frame of columns and rows, I need to add a new column (EVID) to the df and conditionall…

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## [How to increase the stack size of Julia threads?](https://discourse.julialang.org/t/how-to-increase-the-stack-size-of-julia-threads/70359)

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**Author:** [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Replies:** 2\
**Last updated:** [September 15, 2024, 12:15pm UTC](https://discourse.julialang.org/t/how-to-increase-the-stack-size-of-julia-threads/70359 "2024-09-15T12:15:28Z")

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I’m doing multiple recursive computations (Welzl’s algorithm) in parallel using Threads.@threads, producing a stack overflow. This is on latest Linux and Julia 1.7.0-rc2. How do increase the size of a thread’s stack? (…

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## [Best way to import a CSV with a repeated structure](https://discourse.julialang.org/t/best-way-to-import-a-csv-with-a-repeated-structure/119377)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 11:31am UTC](https://discourse.julialang.org/t/best-way-to-import-a-csv-with-a-repeated-structure/119377 "2024-09-15T11:31:29Z")

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Aside any comment on whoever published data with this layout, I have to import a CSV like this, where the data of interest is repeated on each day of the year: Does CSV.jl has options to load the (small) file at once…

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## [Notebook Use Case for Mathematicians?](https://discourse.julialang.org/t/notebook-use-case-for-mathematicians/64200)

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**Author:** [@kapple](https://discourse.julialang.org/u/kapple)\
**Replies:** 31\
**Last updated:** [September 15, 2024, 10:16am UTC](https://discourse.julialang.org/t/notebook-use-case-for-mathematicians/64200 "2024-09-15T10:16:36Z")

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TL; DR: Jupyter, Pluto, Neptune, Weave, and LaTeX, Julia via LuaLaTeX, or Julia via Minted or Listings in LaTeX, all don’t satisfy my use case as a mathematician: I’d like top-down cell evaluation with reactivity and int…

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## [Information about the two methods of \`internalnorm\`](https://discourse.julialang.org/t/information-about-the-two-methods-of-internalnorm/119383)

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**Author:** [@lieskjur](https://discourse.julialang.org/u/lieskjur)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 8:27am UTC](https://discourse.julialang.org/t/information-about-the-two-methods-of-internalnorm/119383 "2024-09-15T08:27:13Z")

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Hi, I am using DifferentialEquations.jl and want to implement my own internalnorm function with specific weights for the purpose of timestep adaptation. I would appreciate some extra information about how the function is…

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## [How to adapt the timestep based on a subset of states](https://discourse.julialang.org/t/how-to-adapt-the-timestep-based-on-a-subset-of-states/119363)

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**Author:** [@lieskjur](https://discourse.julialang.org/u/lieskjur)\
**Replies:** 5\
**Last updated:** [September 15, 2024, 7:53am UTC](https://discourse.julialang.org/t/how-to-adapt-the-timestep-based-on-a-subset-of-states/119363 "2024-09-15T07:53:47Z")

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Hi, I am using DifferentialEquations.jl with ComponentArrays.jl to not only integrate the state of my system but also some additional variables (by-products) which I later need to interpolate at arbitrary times (using “f…

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## [Performance of loop over multi-dimensional array limited by getindex](https://discourse.julialang.org/t/performance-of-loop-over-multi-dimensional-array-limited-by-getindex/119421)

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**Author:** [@jpmoliveira](https://discourse.julialang.org/u/jpmoliveira)\
**Replies:** 6\
**Last updated:** [September 15, 2024, 6:46am UTC](https://discourse.julialang.org/t/performance-of-loop-over-multi-dimensional-array-limited-by-getindex/119421 "2024-09-15T06:46:10Z")

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Hey everyone, I am trying to write a decently fast solver for the electric potential along a mesh given a charge distribution using a Gauss-Seidel method with SOR. Essentially, I have two 3d arrays within a struct and …

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## [Registering Expressions as JuMP variables in a loop](https://discourse.julialang.org/t/registering-expressions-as-jump-variables-in-a-loop/119223)

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**Author:** [@theplatters](https://discourse.julialang.org/u/theplatters)\
**Replies:** 3\
**Last updated:** [September 15, 2024, 4:41am UTC](https://discourse.julialang.org/t/registering-expressions-as-jump-variables-in-a-loop/119223 "2024-09-15T04:41:30Z")

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Hey guys, I have a project, where I create a model like this m = @model begin @exogenous data @exogenous consumption production\[1:71\] := inv(I - data.Ω) \* consumtion prices\[1:71\] := @maxc c(production) constraints(c…

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## [ERROR: failed to clone from GitHub](https://discourse.julialang.org/t/error-failed-to-clone-from-github/119403)

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**Author:** [@WuSiren](https://discourse.julialang.org/u/WuSiren)\
**Replies:** 2\
**Last updated:** [September 15, 2024, 4:17am UTC](https://discourse.julialang.org/t/error-failed-to-clone-from-github/119403 "2024-09-15T04:17:56Z")

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I suddenly can’t add packages from github, for example: (jl\_WqeLMM) pkg\> add https://github.com/JuliaPolyhedra/Polyhedra.jl#master Cloning git-repo \`https://github.com/JuliaPolyhedra/Polyhedra.jl\` ERROR: failed to …

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## [Unicode autocomplete howto](https://discourse.julialang.org/t/unicode-autocomplete-howto/96752)

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**Author:** [@owiecc](https://discourse.julialang.org/u/owiecc)\
**Replies:** 3\
**Last updated:** [September 15, 2024, 3:22am UTC](https://discourse.julialang.org/t/unicode-autocomplete-howto/96752 "2024-09-15T03:22:53Z")

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We’d like to implement autocomplete, just like in Julia, of unicode characters in typst VSCode extension. Could you point me to how this implementation is done? Is it in LanguageServer.jl or is it done in Julia itself? P…

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## [Maybe I should write a book on the maths and comp/sci behind the first 100 Project Euler problems](https://discourse.julialang.org/t/maybe-i-should-write-a-book-on-the-maths-and-comp-sci-behind-the-first-100-project-euler-problems/118534)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 10\
**Last updated:** [September 15, 2024, 3:05am UTC](https://discourse.julialang.org/t/maybe-i-should-write-a-book-on-the-maths-and-comp-sci-behind-the-first-100-project-euler-problems/118534 "2024-09-15T03:05:01Z")

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Been feeling lost in life possibly due to mid life crisis. Been trying to find some clarity and I just remember how happy I felt doing Project Euler problems back in high school. I read on the site that the owner doesn…

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## [Installing Julia 1.10.5 on a 2011 Mac Pro 2.3 GHz Intel Core i5](https://discourse.julialang.org/t/installing-julia-1-10-5-on-a-2011-mac-pro-2-3-ghz-intel-core-i5/119404)

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**Author:** [@VivMendes](https://discourse.julialang.org/u/VivMendes)\
**Replies:** 7\
**Last updated:** [September 14, 2024, 5:54pm UTC](https://discourse.julialang.org/t/installing-julia-1-10-5-on-a-2011-mac-pro-2-3-ghz-intel-core-i5/119404 "2024-09-14T17:54:46Z")

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Hi, I have a student who has a 2011 Mac Pro with a 2.3 GHz Intel Core i5 processor. She installed Julia v 1.10.5, but it failed when she tried to run it. She tried the installation using the two alternatives: manually an…

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## [Go To Definition (F12) does not work for functions in an included file](https://discourse.julialang.org/t/go-to-definition-f12-does-not-work-for-functions-in-an-included-file/76293)

<div class="topic-metadata">

**Author:** [@Soldalma](https://discourse.julialang.org/u/Soldalma)\
**Replies:** 4\
**Last updated:** [September 14, 2024, 10:24am UTC](https://discourse.julialang.org/t/go-to-definition-f12-does-not-work-for-functions-in-an-included-file/76293 "2024-09-14T10:24:19Z")

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When I highlight the name of a function foo that was defined in a file myfile.jl that was included in my code like this: # Contents of myfile.jl some code include(myfile.jl) some more code x = foo(y) still more code wh…

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## [How to manage interactions between two separate package extensions](https://discourse.julialang.org/t/how-to-manage-interactions-between-two-separate-package-extensions/119269)

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**Author:** [@andreasvarga](https://discourse.julialang.org/u/andreasvarga)\
**Replies:** 18\
**Last updated:** [September 14, 2024, 10:23am UTC](https://discourse.julialang.org/t/how-to-manage-interactions-between-two-separate-package-extensions/119269 "2024-09-14T10:23:33Z")

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I am preparing a new package to handle periodic matrices, which has two package extensions, say PackageExt1 and PackageExt2, which additionally define and manipulate two new (periodic) matrix types PM1 and PM2, respectiv…

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## [Fill SVector with uniformly sampled Float32 values](https://discourse.julialang.org/t/fill-svector-with-uniformly-sampled-float32-values/119386)

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**Author:** [@Tetrakai](https://discourse.julialang.org/u/Tetrakai)\
**Replies:** 5\
**Last updated:** [September 14, 2024, 6:57am UTC](https://discourse.julialang.org/t/fill-svector-with-uniformly-sampled-float32-values/119386 "2024-09-14T06:57:33Z")

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There are quite a few topics on this, eg: Performance of generating uniform Float32 numbers Given the current default behavior hasn’t been fixed, I tried a few things. As a baseline, these all return Float64: Edit: Ba…

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## [Facing problems with Sundials.jl (ARKODE) with discrete callback](https://discourse.julialang.org/t/facing-problems-with-sundials-jl-arkode-with-discrete-callback/119278)

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**Author:** [@humhongekamyaab](https://discourse.julialang.org/u/humhongekamyaab)\
**Replies:** 5\
**Last updated:** [September 14, 2024, 6:24am UTC](https://discourse.julialang.org/t/facing-problems-with-sundials-jl-arkode-with-discrete-callback/119278 "2024-09-14T06:24:39Z")

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Hello everyone, I want to use CashKarp RK explicit algorithm (Numerical Recipe 2nd Edition RK) from Sundials.jl for my particular ODE system and need a discrete callback to do some manipulations after each time step. h…

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## [\[ANN\] PkgToSoftwareBOM v0.1.12: Options to include the package server and artifact build scripts in the SBOM](https://discourse.julialang.org/t/ann-pkgtosoftwarebom-v0-1-12-options-to-include-the-package-server-and-artifact-build-scripts-in-the-sbom/119390)

<div class="topic-metadata">

**Author:** [@SamuraiAku](https://discourse.julialang.org/u/SamuraiAku)\
**Replies:** 0\
**Last updated:** [September 14, 2024, 6:23am UTC](https://discourse.julialang.org/t/ann-pkgtosoftwarebom-v0-1-12-options-to-include-the-package-server-and-artifact-build-scripts-in-the-sbom/119390 "2024-09-14T06:23:46Z")

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Version 0.1.12 of the PkgToSoftwareBOM.jl package has been released. PkgToSoftwareBOM.jl produces a Software Bill of Materials (SBOM) describing your Julia environment. At this time, the SBOM produced is in the (SPDX) f…

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## [Flux.data ? why is data undefined?](https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219)

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**Author:** [@Ananya\_Hazarika](https://discourse.julialang.org/u/Ananya_Hazarika)\
**Replies:** 1\
**Last updated:** [September 14, 2024, 5:16am UTC](https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219 "2024-09-14T05:16:21Z")

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in this: data = Iterators.repeated((), 100) opt = ADAM(0.1) cb = function () #callback function to observe training display(loss\_rd\_dde()) using remake to re-create our prob with current parameters p display(plot(so…

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## [Why does definite integration in SymbolicNumericIntegration.jl produce different outputs in these cases?](https://discourse.julialang.org/t/why-does-definite-integration-in-symbolicnumericintegration-jl-produce-different-outputs-in-these-cases/119349)

<div class="topic-metadata">

**Author:** [@GregVernon](https://discourse.julialang.org/u/GregVernon)\
**Replies:** 1\
**Last updated:** [September 14, 2024, 4:48am UTC](https://discourse.julialang.org/t/why-does-definite-integration-in-symbolicnumericintegration-jl-produce-different-outputs-in-these-cases/119349 "2024-09-14T04:48:34Z")

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Why does the SymbolicNumericIntegration.integrate function not seem to respect the detailed=false argument when using .( execution? Also, when then operating on a matrix, it seems to return the indefinite integral rathe…

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## [A lot of memory only loading modules!](https://discourse.julialang.org/t/a-lot-of-memory-only-loading-modules/119295)

<div class="topic-metadata">

**Author:** [@Ronneesley](https://discourse.julialang.org/u/Ronneesley)\
**Replies:** 8\
**Last updated:** [September 14, 2024, 4:35am UTC](https://discourse.julialang.org/t/a-lot-of-memory-only-loading-modules/119295 "2024-09-14T04:35:03Z")

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Hi, I’m study why my modules requires a lot of memory \> 500MB. So I decided to study the growth of memory of my modules. I discovered that only one module using LibPQ let Julia use 213,1 MB. If I compare only Julia RE…

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