# Latest

**URL:** https://discourse.julialang.org/latest.md?page=438

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

**Page:** 439

---

## [Work with deps with more restrictive julia compat](https://discourse.julialang.org/t/work-with-deps-with-more-restrictive-julia-compat/112510)

<div class="topic-metadata">

**Author:** [@lgoettgens](https://discourse.julialang.org/u/lgoettgens)\
**Replies:** 5\
**Last updated:** [April 9, 2024, 10:06am UTC](https://discourse.julialang.org/t/work-with-deps-with-more-restrictive-julia-compat/112510 "2024-04-09T10:06:54Z")

</div>

I am trying to make a minimal example from my real-world problem. Let’s say I have two packages PkgA and PkgB. Currently, PkgA has a julia compat of 1.0, while PkgB has a julia compat of 1.7. I now want to use some func…

---

## [Rowgap!() not working properly](https://discourse.julialang.org/t/rowgap-not-working-properly/112682)

<div class="topic-metadata">

**Author:** [@brotmesmer](https://discourse.julialang.org/u/brotmesmer)\
**Replies:** 2\
**Last updated:** [April 9, 2024, 8:36am UTC](https://discourse.julialang.org/t/rowgap-not-working-properly/112682 "2024-04-09T08:36:21Z")

</div>

Hi all, when trying to layout a plot similar to the the example in the Makie layout tutorial i ran into a problem using the rowgap!() command: MethodError: objects of type Int64 are not callable colgap!() works flawle…

---

## [SoPlex from JuMP ? (available through SCIP ?)](https://discourse.julialang.org/t/soplex-from-jump-available-through-scip/112117)

<div class="topic-metadata">

**Author:** [@JonT](https://discourse.julialang.org/u/JonT)\
**Replies:** 3\
**Last updated:** [April 9, 2024, 7:08am UTC](https://discourse.julialang.org/t/soplex-from-jump-available-through-scip/112117 "2024-04-09T07:08:09Z")

</div>

I have a problem for which there is a recursive branch and bound algorithm using exact arithmetic in a simplex solver (QSopt\_ex). It is very slow even for small problems, and I was hoping to explore a heuristic to improv…

---

## [Should we make radix sort the primary option for sorting?](https://discourse.julialang.org/t/should-we-make-radix-sort-the-primary-option-for-sorting/112708)

<div class="topic-metadata">

**Author:** [@Tarny\_GG\_Channie](https://discourse.julialang.org/u/Tarny_GG_Channie)\
**Replies:** 2\
**Last updated:** [April 9, 2024, 6:19am UTC](https://discourse.julialang.org/t/should-we-make-radix-sort-the-primary-option-for-sorting/112708 "2024-04-09T06:19:10Z")

</div>

In a typical programming language, comparison-based sorting function is typically used due to the requirements being simpler, only requiring comparisons. In practice, however, if comparisons are possible, radix sorting …

---

## [Have an strange error creating optimization subproblems on Julia](https://discourse.julialang.org/t/have-an-strange-error-creating-optimization-subproblems-on-julia/112692)

<div class="topic-metadata">

**Author:** [@benjamin.nunez](https://discourse.julialang.org/u/benjamin.nunez)\
**Replies:** 5\
**Last updated:** [April 9, 2024, 5:27am UTC](https://discourse.julialang.org/t/have-an-strange-error-creating-optimization-subproblems-on-julia/112692 "2024-04-09T05:27:53Z")

</div>

Hello! I’m experiencing a rather strange problem in Julia when creating optimization subproblems. Basically I have a function called “build\_subproblem(s)” which depends on a scenario “s” and formulates an optimization p…

---

## [Aic in GLM](https://discourse.julialang.org/t/aic-in-glm/6229)

<div class="topic-metadata">

**Author:** [@LewisHein](https://discourse.julialang.org/u/LewisHein)\
**Replies:** 2\
**Last updated:** [April 9, 2024, 3:17am UTC](https://discourse.julialang.org/t/aic-in-glm/6229 "2024-04-09T03:17:47Z")

</div>

Hey everyone, I am trying to get the AIC of a model in GLM. It’s just a simple regression model with an identity link function. Yet, the call to aic(mod) says that my model is not a subtype of StatisticalModel. Shouldn…

---

## [\[ANN\] WildcardArrays.jl](https://discourse.julialang.org/t/ann-wildcardarrays-jl/112693)

<div class="topic-metadata">

**Author:** [@licioromao](https://discourse.julialang.org/u/licioromao)\
**Replies:** 0\
**Last updated:** [April 8, 2024, 7:11pm UTC](https://discourse.julialang.org/t/ann-wildcardarrays-jl/112693 "2024-04-08T19:11:17Z")

</div>

Hi all, I would like to share with you the package WildcardArrays.jl. It allows us to specify sparse matrices from text files; repeated entries can be specified using a wildcard character (’\*’). Version 0.1.0 API is des…

---

## [InexactError in Range](https://discourse.julialang.org/t/inexacterror-in-range/112691)

<div class="topic-metadata">

**Author:** [@jdm204](https://discourse.julialang.org/u/jdm204)\
**Replies:** 2\
**Last updated:** [April 8, 2024, 8:30pm UTC](https://discourse.julialang.org/t/inexacterror-in-range/112691 "2024-04-08T20:30:08Z")

</div>

With f = -9.223372036854776e18, (f/2):0.0 gives a range of floats, while f:0.0 gives the following error: ERROR: InexactError: trunc(Int64, 9.223372036854776e18) Stacktrace: \[1\] trunc @ ./float.jl:905 \[inlined\] \[2\]…

---

## [Is it time to make LLVM optional and how?](https://discourse.julialang.org/t/is-it-time-to-make-llvm-optional-and-how/112677)

<div class="topic-metadata">

**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 7\
**Last updated:** [April 8, 2024, 8:28pm UTC](https://discourse.julialang.org/t/is-it-time-to-make-llvm-optional-and-how/112677 "2024-04-08T20:28:13Z")

</div>

LLVM is a very heavy dependency, and is required (for fully compiled apps), just (I meant e.g.) in case eval is used. I would like to drop LLVM requirement (for still rather fast code), and I know it’s possible, then you…

---

## [How to find (or create your own) Julia careers?](https://discourse.julialang.org/t/how-to-find-or-create-your-own-julia-careers/112474)

<div class="topic-metadata">

**Author:** [@Tarny\_GG\_Channie](https://discourse.julialang.org/u/Tarny_GG_Channie)\
**Replies:** 10\
**Last updated:** [April 8, 2024, 8:03pm UTC](https://discourse.julialang.org/t/how-to-find-or-create-your-own-julia-careers/112474 "2024-04-08T20:03:24Z")

</div>

Julia is not a typical language used in workplaces. Still, for Julia lovers, it’s something you want to write at work. So, how do you create Julia work for you? I can think of 3 main ways. Find rare companies that use…

---

## [Programming Language Benchmark 2](https://discourse.julialang.org/t/programming-language-benchmark-2/108429)

<div class="topic-metadata">

**Author:** [@jakobnissen](https://discourse.julialang.org/u/jakobnissen)\
**Replies:** 25\
**Last updated:** [April 8, 2024, 5:30pm UTC](https://discourse.julialang.org/t/programming-language-benchmark-2/108429 "2024-04-08T17:30:11Z")

</div>

The programmer attractivechaos has created a new benchmark comparing different programming languages, hosted at GitHub - attractivechaos/plb2: A programming language benchmark. It’s a quite nice benchmark, being small en…

---

## [Weave not working for latex](https://discourse.julialang.org/t/weave-not-working-for-latex/112643)

<div class="topic-metadata">

**Author:** [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Replies:** 12\
**Last updated:** [April 8, 2024, 4:38pm UTC](https://discourse.julialang.org/t/weave-not-working-for-latex/112643 "2024-04-08T16:38:41Z")

</div>

I am new to Weave.jl and I am having trouble with the latex rendering. I have xelatex installed and can get it to render for simple latex equation, but when I try to use it for expressions that start with \\begin{align} I…

---

## [Save plot as a JPEG file](https://discourse.julialang.org/t/save-plot-as-a-jpeg-file/112684)

<div class="topic-metadata">

**Author:** [@eweiss](https://discourse.julialang.org/u/eweiss)\
**Replies:** 1\
**Last updated:** [April 8, 2024, 3:57pm UTC](https://discourse.julialang.org/t/save-plot-as-a-jpeg-file/112684 "2024-04-08T15:57:02Z")

</div>

Is there any way to save a plot (from Plots but I’m open to something else) as a jpeg? I’m creating several hundred simple line graphs as pngs, but I’d like to speed loading on the web by jusing a jpeg.None of the Julia …

---

## [Plots.jl and CairoMakie not precompiling](https://discourse.julialang.org/t/plots-jl-and-cairomakie-not-precompiling/112538)

<div class="topic-metadata">

**Author:** [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Replies:** 10\
**Last updated:** [April 8, 2024, 4:16pm UTC](https://discourse.julialang.org/t/plots-jl-and-cairomakie-not-precompiling/112538 "2024-04-08T16:16:33Z")

</div>

I can’t seem to get Pluto or CairoMakie to precompile, and I am not sure why. This is on a company computer so I am not sure if this is related to any firewall? Other packages seem to precompile fine. Has anyone had an …

---

## [Julia + Docker + AWS DevOps Workflow](https://discourse.julialang.org/t/julia-docker-aws-devops-workflow/109459)

<div class="topic-metadata">

**Author:** [@mrufsvold](https://discourse.julialang.org/u/mrufsvold)\
**Replies:** 2\
**Last updated:** [April 8, 2024, 3:56pm UTC](https://discourse.julialang.org/t/julia-docker-aws-devops-workflow/109459 "2024-04-08T15:56:52Z")

</div>

I have a task, written in Julia, that I manage using Fargate. My current workflow is: Write some code in my project directory Deploy using Serverless to wrap up a Docker container and push to ECS Kick of the task from …

---

## [How to declare sharedarray in local scope](https://discourse.julialang.org/t/how-to-declare-sharedarray-in-local-scope/112683)

<div class="topic-metadata">

**Author:** [@TongTongYee](https://discourse.julialang.org/u/TongTongYee)\
**Replies:** 0\
**Last updated:** [April 8, 2024, 1:49pm UTC](https://discourse.julialang.org/t/how-to-declare-sharedarray-in-local-scope/112683 "2024-04-08T13:49:34Z")

</div>

Hi! I want to use sharedArray without data movement. So I write the following code. using Distributed addprocs(1) A = SharedArray{ComplexF64,1}(fill(1,(10))); @everywhere 2 A But this code makes the error, ERROR: On…

---

## [Improving performance of calculating Symbolics Jacobians?](https://discourse.julialang.org/t/improving-performance-of-calculating-symbolics-jacobians/112681)

<div class="topic-metadata">

**Author:** [@Undermine28](https://discourse.julialang.org/u/Undermine28)\
**Replies:** 7\
**Last updated:** [April 8, 2024, 1:47pm UTC](https://discourse.julialang.org/t/improving-performance-of-calculating-symbolics-jacobians/112681 "2024-04-08T13:47:41Z")

</div>

I am trying to calculate the Observation Matrix of a non-linear system. To do this I need to find more and more difficult Lie derivatives. This requires calculating recursive Jacobians. Very quickly, Symbolics seems to …

---

## [Documentation returns some unusual entries](https://discourse.julialang.org/t/documentation-returns-some-unusual-entries/112656)

<div class="topic-metadata">

**Author:** [@lgmontoya](https://discourse.julialang.org/u/lgmontoya)\
**Replies:** 4\
**Last updated:** [April 8, 2024, 10:47am UTC](https://discourse.julialang.org/t/documentation-returns-some-unusual-entries/112656 "2024-04-08T10:47:11Z")

</div>

In the documentation section if I type in (say) ‘sort’ I get some descriptions for the function ‘sqrt’ (which in spelling is very similar). See below. VSCODE Version: 1.87.2 (Universal) Julia VSCODE Extension v1.75.…

---

## [Two conditions in a while -\> ERROR: TypeError: non-boolean (BitMatrix) used in boolean context](https://discourse.julialang.org/t/two-conditions-in-a-while-error-typeerror-non-boolean-bitmatrix-used-in-boolean-context/112564)

<div class="topic-metadata">

**Author:** [@Stefani](https://discourse.julialang.org/u/Stefani)\
**Replies:** 5\
**Last updated:** [April 8, 2024, 10:41am UTC](https://discourse.julialang.org/t/two-conditions-in-a-while-error-typeerror-non-boolean-bitmatrix-used-in-boolean-context/112564 "2024-04-08T10:41:19Z")

</div>

Hallo, I am new to Julia and this is the first time I ever ask for help in a forum, so please let me know if I can improve my post. My problem: Let dR and dW be functions from R^2 → R^{n \\times n}. There exists a pai…

---

## [Plotting with user input](https://discourse.julialang.org/t/plotting-with-user-input/112460)

<div class="topic-metadata">

**Author:** [@Jesse1](https://discourse.julialang.org/u/Jesse1)\
**Replies:** 8\
**Last updated:** [April 8, 2024, 10:01am UTC](https://discourse.julialang.org/t/plotting-with-user-input/112460 "2024-04-08T10:01:43Z")

</div>

Hi, I am very new to Julia and am looking for advice/information on plotting. I am trying to visualise my model fits for multiple instances and would like to visualise the plot and then give user input, perhaps like a 0…

---

## [The DFBDF solver is great; how can I learn more about it?](https://discourse.julialang.org/t/the-dfbdf-solver-is-great-how-can-i-learn-more-about-it/112487)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 5\
**Last updated:** [April 8, 2024, 9:12am UTC](https://discourse.julialang.org/t/the-dfbdf-solver-is-great-how-can-i-learn-more-about-it/112487 "2024-04-08T09:12:12Z")

</div>

I love the DFBDF solver for implicit differential equations, 2 to 4 times faster than IDA from Sundials for my problem and using only half of the memory… And very stable. Is there any scientific paper about it? And whe…

---

## [Scaling viz plots in GeoStats](https://discourse.julialang.org/t/scaling-viz-plots-in-geostats/112242)

<div class="topic-metadata">

**Author:** [@TimG](https://discourse.julialang.org/u/TimG)\
**Replies:** 18\
**Last updated:** [April 8, 2024, 8:12am UTC](https://discourse.julialang.org/t/scaling-viz-plots-in-geostats/112242 "2024-04-08T08:12:52Z")

</div>

I am making chloropleth maps of different metropolitan areas in the UK. Here are two examples: Now, Liverpool and London are very different in geographic size. Is there an easy way I can make these plots conform t…

---

## [How to copy from a Jupyter notebook cell?](https://discourse.julialang.org/t/how-to-copy-from-a-jupyter-notebook-cell/94594)

<div class="topic-metadata">

**Author:** [@matthias314](https://discourse.julialang.org/u/matthias314)\
**Replies:** 6\
**Last updated:** [April 8, 2024, 7:39am UTC](https://discourse.julialang.org/t/how-to-copy-from-a-jupyter-notebook-cell/94594 "2024-04-08T07:39:29Z")

</div>

I want to copy text from a Jupyter notebook cell to some other application, for example a text editor. I can copy the output of a cell, but not the content of a cell. Is there a way to do it (without downloading the note…

---

## [Transposes vs 1-row matrices](https://discourse.julialang.org/t/transposes-vs-1-row-matrices/112652)

<div class="topic-metadata">

**Author:** [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Replies:** 3\
**Last updated:** [April 8, 2024, 6:34am UTC](https://discourse.julialang.org/t/transposes-vs-1-row-matrices/112652 "2024-04-08T06:34:50Z")

</div>

This will return a 1-element array. You could get a scalar out by using an Adjoint vector instead via \[-1,1\]'\*\[extrema(itr)...\] (see e.g. @jiahao’s talk on the meaning of transposition). But it’s a bit silly to allo…

---

## [Adding a local module](https://discourse.julialang.org/t/adding-a-local-module/112658)

<div class="topic-metadata">

**Author:** [@jiang\_ming\_zhang](https://discourse.julialang.org/u/jiang_ming_zhang)\
**Replies:** 6\
**Last updated:** [April 8, 2024, 6:01am UTC](https://discourse.julialang.org/t/adding-a-local-module/112658 "2024-04-08T06:01:41Z")

</div>

I am trying to run some open code from github The package is not a registered one, so it is suggested to add the package from the local path. I have downloaded the package to my C disk, but cannot add it successfully, …

---

## [What's the current (spring 2024) canonical approach to data science in Julia?](https://discourse.julialang.org/t/whats-the-current-spring-2024-canonical-approach-to-data-science-in-julia/112427)

<div class="topic-metadata">

**Author:** [@elenev](https://discourse.julialang.org/u/elenev)\
**Replies:** 34\
**Last updated:** [April 8, 2024, 4:30am UTC](https://discourse.julialang.org/t/whats-the-current-spring-2024-canonical-approach-to-data-science-in-julia/112427 "2024-04-08T04:30:59Z")

</div>

I have been using Julia for building, solving, and simulating computational models for a few years now, but my empirical (“data science”) work has remained in legacy languages – Python for data wrangling and plotting, St…

---

## [PEtab with MethodOfLines](https://discourse.julialang.org/t/petab-with-methodoflines/112647)

<div class="topic-metadata">

**Author:** [@kkakosim](https://discourse.julialang.org/u/kkakosim)\
**Replies:** 4\
**Last updated:** [April 8, 2024, 4:23am UTC](https://discourse.julialang.org/t/petab-with-methodoflines/112647 "2024-04-08T04:23:47Z")

</div>

Any examples utilizing PEtab.jl for parameter fitting with MethodOfLines.jl? If not, then could an ODESystem be (re)constructed from an ODEProblem or a PDESystem?

---

## [Does using GSL.jl mean I have to release my package under GPL?](https://discourse.julialang.org/t/does-using-gsl-jl-mean-i-have-to-release-my-package-under-gpl/112654)

<div class="topic-metadata">

**Author:** [@Abhro](https://discourse.julialang.org/u/Abhro)\
**Replies:** 5\
**Last updated:** [April 8, 2024, 1:26am UTC](https://discourse.julialang.org/t/does-using-gsl-jl-mean-i-have-to-release-my-package-under-gpl/112654 "2024-04-08T01:26:51Z")

</div>

I’m currently writing a project/package that has using GSL in its source file and GSL = "92c\[...\]" under Project.toml’s \[deps\] section. GSL.jl is the wrapper for the GNU Scientific Library (GSL), which is explicitly part…

---

## [\`public\` cannot be used when quoting](https://discourse.julialang.org/t/public-cannot-be-used-when-quoting/112657)

<div class="topic-metadata">

**Author:** [@matthias314](https://discourse.julialang.org/u/matthias314)\
**Replies:** 1\
**Last updated:** [April 8, 2024, 1:23am UTC](https://discourse.julialang.org/t/public-cannot-be-used-when-quoting/112657 "2024-04-08T01:23:41Z")

</div>

To create an expression involving the new “keyword” public of Julia 1.11, one can say something like julia\> Expr(:public, :x) :(public x) The following does not work, however: julia\> :(public x) ERROR: ParseError: # E…

---

## [Execution speed - can someone explain the difference?](https://discourse.julialang.org/t/execution-speed-can-someone-explain-the-difference/112655)

<div class="topic-metadata">

**Author:** [@novemberist](https://discourse.julialang.org/u/novemberist)\
**Replies:** 9\
**Last updated:** [April 8, 2024, 12:06am UTC](https://discourse.julialang.org/t/execution-speed-can-someone-explain-the-difference/112655 "2024-04-08T00:06:34Z")

</div>

Hello everyone, first of all, I’m sorry if this is a stupid question, but I’m fairly new to Julia and also not a seasoned programmer or computer scientist at all. But I’m scratching my head a little here about something…

[Previous page](https://discourse.julialang.org/latest.md?page=437)

[Next page](https://discourse.julialang.org/latest.md?page=439)