# Latest

**URL:** https://discourse.julialang.org/latest.md?page=1051

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

**Page:** 1052

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## [Website to obtain point coordinates from printed plot](https://discourse.julialang.org/t/website-to-obtain-point-coordinates-from-printed-plot/80395)

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**Author:** [@amrods](https://discourse.julialang.org/u/amrods)\
**Replies:** 3\
**Last updated:** [May 4, 2022, 12:36am UTC](https://discourse.julialang.org/t/website-to-obtain-point-coordinates-from-printed-plot/80395 "2022-05-04T00:36:13Z")

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Some time ago I remember seeing, perhaps in Twitter, a website in which you could upload say a jpeg of a plot and it has tools that allow you to recover the coordinates of points in that plot. Does anyone know that webs…

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## [Communicating a struct to Fortran with a large array](https://discourse.julialang.org/t/communicating-a-struct-to-fortran-with-a-large-array/80453)

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**Author:** [@james3](https://discourse.julialang.org/u/james3)\
**Replies:** 0\
**Last updated:** [May 3, 2022, 10:28pm UTC](https://discourse.julialang.org/t/communicating-a-struct-to-fortran-with-a-large-array/80453 "2022-05-03T22:28:08Z")

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What is the best practice for communicating a struct to Fortran that contains a large array object? (In practice, the struct s\_t that I define below will also contain other elements). I was doing something like using S…

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## [Package problems during CI testing (github actions)](https://discourse.julialang.org/t/package-problems-during-ci-testing-github-actions/80439)

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**Author:** [@Gus\_Hart](https://discourse.julialang.org/u/Gus_Hart)\
**Replies:** 4\
**Last updated:** [May 3, 2022, 10:12pm UTC](https://discourse.julialang.org/t/package-problems-during-ci-testing-github-actions/80439 "2022-05-03T22:12:15Z")

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I’ve setup continuous integration for several packages that I’ve written. For a new package, I’m getting an error that I can’t debug (see image). (Here is the new packjage: GitHub - glwhart/Spacey.jl: Spacegroup finder u…

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## [Base.Pipe missing from the doc?](https://discourse.julialang.org/t/base-pipe-missing-from-the-doc/80440)

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**Author:** [@chunjiw](https://discourse.julialang.org/u/chunjiw)\
**Replies:** 3\
**Last updated:** [May 3, 2022, 9:32pm UTC](https://discourse.julialang.org/t/base-pipe-missing-from-the-doc/80440 "2022-05-03T21:32:26Z")

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I cannot find Base.Pipe in the doc. Am I missing something, or is it actually missing from the doc? On a similar note, where do I learn more on pipes, streams and IO besides the doc?

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## [Applying Reverse-Mode AD to ForwardDiff Derivatives/Gradients](https://discourse.julialang.org/t/applying-reverse-mode-ad-to-forwarddiff-derivatives-gradients/80446)

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**Author:** [@codyrucker](https://discourse.julialang.org/u/codyrucker)\
**Replies:** 0\
**Last updated:** [May 3, 2022, 8:52pm UTC](https://discourse.julialang.org/t/applying-reverse-mode-ad-to-forwarddiff-derivatives-gradients/80446 "2022-05-03T20:52:21Z")

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I am building a neural net and want to be able to differentiate the network with respect to the model input . I would then like to compute the gradient(with respect to the network weights and bias) of this derivative. I …

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## [Installation of some packages fail](https://discourse.julialang.org/t/installation-of-some-packages-fail/80413)

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**Author:** [@jasperbos](https://discourse.julialang.org/u/jasperbos)\
**Replies:** 4\
**Last updated:** [May 3, 2022, 7:40pm UTC](https://discourse.julialang.org/t/installation-of-some-packages-fail/80413 "2022-05-03T19:40:43Z")

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Hi all, I just fired up Julia for the first time. My goal is to use the JEMSS package for research purposes. However, as I try to install it with pkg\> add https://github.com/uoa-ems-research/JEMSS.jl Cgl\_jll, Cbc\_jll, …

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## [An analog to Common Lisp EQL specialization?](https://discourse.julialang.org/t/an-analog-to-common-lisp-eql-specialization/80380)

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**Author:** [@Mark\_Nahabedian](https://discourse.julialang.org/u/Mark_Nahabedian)\
**Replies:** 6\
**Last updated:** [May 3, 2022, 7:25pm UTC](https://discourse.julialang.org/t/an-analog-to-common-lisp-eql-specialization/80380 "2022-05-03T19:25:02Z")

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The Essentials section of the Julia documentation suggests that methods can be specalied on Val types. Perhaps I’m misunderstanding, but this seems analogous to Common Lisp’s EQL specialization. Assuming that’s the cas…

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## [Feedback before TableTransforms.jl v1.0](https://discourse.julialang.org/t/feedback-before-tabletransforms-jl-v1-0/80297)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 2\
**Last updated:** [May 3, 2022, 4:33pm UTC](https://discourse.julialang.org/t/feedback-before-tabletransforms-jl-v1-0/80297 "2022-05-03T16:33:06Z")

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TableTransforms.jl is ready for a first major release and we would like to ask the community for feedback before moving forward with the registration of v1.0. The API is quite stable and we managed to add various transfo…

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## [Loading packages to the freshly added processes](https://discourse.julialang.org/t/loading-packages-to-the-freshly-added-processes/80434)

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**Author:** [@Gregstrq](https://discourse.julialang.org/u/Gregstrq)\
**Replies:** 3\
**Last updated:** [May 3, 2022, 5:49pm UTC](https://discourse.julialang.org/t/loading-packages-to-the-freshly-added-processes/80434 "2022-05-03T17:49:07Z")

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I am trying to write the function that launches multithreaded processes and then pins the threads to the core. The stripped down version looks like using Distributed, ThreadPinning function add\_pinned\_workers(nw::Int, …

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## [Julia expression to AbstractTree-like structure in Symbolics](https://discourse.julialang.org/t/julia-expression-to-abstracttree-like-structure-in-symbolics/80289)

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**Author:** [@mbesancon](https://discourse.julialang.org/u/mbesancon)\
**Replies:** 2\
**Last updated:** [April 30, 2022, 7:27pm UTC](https://discourse.julialang.org/t/julia-expression-to-abstracttree-like-structure-in-symbolics/80289 "2022-04-30T19:27:10Z")

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I was looking at the different possibilities for Expr to tree-like structure in Julia and thought of the Symbolics ecosystem as the natural modern place for it I found an old post and GitHub - dfdx/Espresso.jl: Expressi…

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## [Return matrix of Cchar from Fortran library](https://discourse.julialang.org/t/return-matrix-of-cchar-from-fortran-library/80430)

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**Author:** [@james3](https://discourse.julialang.org/u/james3)\
**Replies:** 2\
**Last updated:** [May 3, 2022, 3:28pm UTC](https://discourse.julialang.org/t/return-matrix-of-cchar-from-fortran-library/80430 "2022-05-03T15:28:31Z")

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I have been having difficulty getting a Fortran subroutine return a matrix of Cchar to Julia (contained in a struct; in practice there are other components in s\_t below). On the Fortran side I have module test use …

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## [\[ANN\] StaticTools.jl: Enabling StaticCompiler.jl-based compilation of Julia code to standalone native binaries by avoiding GC allocations and \`llvmcall\`-ing all the things](https://discourse.julialang.org/t/ann-statictools-jl-enabling-staticcompiler-jl-based-compilation-of-julia-code-to-standalone-native-binaries-by-avoiding-gc-allocations-and-llvmcall-ing-all-the-things/80398)

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**Author:** [@brenhinkeller](https://discourse.julialang.org/u/brenhinkeller)\
**Replies:** 2\
**Last updated:** [May 3, 2022, 2:50pm UTC](https://discourse.julialang.org/t/ann-statictools-jl-enabling-staticcompiler-jl-based-compilation-of-julia-code-to-standalone-native-binaries-by-avoiding-gc-allocations-and-llvmcall-ing-all-the-things/80398 "2022-05-03T14:50:22Z")

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Technically this one has been registered for a couple months already, but we never made an announcement, so here goes! GitHub - brenhinkeller/StaticTools.jl: Enabling StaticCompiler.jl-based compilation of (some) Julia c…

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## [Bayesian model comparison / selection](https://discourse.julialang.org/t/bayesian-model-comparison-selection/80420)

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**Author:** [@uferc](https://discourse.julialang.org/u/uferc)\
**Replies:** 3\
**Last updated:** [May 3, 2022, 2:40pm UTC](https://discourse.julialang.org/t/bayesian-model-comparison-selection/80420 "2022-05-03T14:40:20Z")

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Hello everyone, my question revolves around the topic of Bayesian model comparison and henceforce selection. I’ve build 3 alternative models (each NUTS(0.65), 4 chains, 8000 draws) and fit my data with the Turing.jl li…

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## [Flux normalization and regularisation](https://discourse.julialang.org/t/flux-normalization-and-regularisation/79925)

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**Author:** [@Aminath\_Shausan](https://discourse.julialang.org/u/Aminath_Shausan)\
**Replies:** 7\
**Last updated:** [May 3, 2022, 2:34pm UTC](https://discourse.julialang.org/t/flux-normalization-and-regularisation/79925 "2022-05-03T14:34:00Z")

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Hi I am using a Flux model for regression with L1 regularization like below: model = Chain(Dense(size(X\_train,1),254, relu), Dense(254, 254, relu), Dense(254, 1,identity)) losses =\[\] l1n…

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## [Bug with Pkg up? (for DifferentialEquations.jl)](https://discourse.julialang.org/t/bug-with-pkg-up-for-differentialequations-jl/80425)

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**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 2\
**Last updated:** [May 3, 2022, 1:22pm UTC](https://discourse.julialang.org/t/bug-with-pkg-up-for-differentialequations-jl/80425 "2022-05-03T13:22:26Z")

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I do: (@v1.9) pkg\> up --major DifferentialEquations@7.1.0 It took a lot of time, updated at least some other packages, even precompiled DifferentialEquations, but it’s still at older version. So if this is the wrong co…

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## [SciML Workshop, Copenhagen](https://discourse.julialang.org/t/sciml-workshop-copenhagen/80421)

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**Author:** [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Replies:** 0\
**Last updated:** [May 3, 2022, 12:06pm UTC](https://discourse.julialang.org/t/sciml-workshop-copenhagen/80421 "2022-05-03T12:06:27Z")

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Hello everyone, I will be running a week long SciML course at DTU in Copenhagen in mid June. See the details below. IIUC some students can take it for credit. Dear all, For your information, I am hosting a PhD Course…

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## [Cannot use apps created with PackageCompiler that have LLVM.jl in them](https://discourse.julialang.org/t/cannot-use-apps-created-with-packagecompiler-that-have-llvm-jl-in-them/79986)

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**Author:** [@thazhemadam](https://discourse.julialang.org/u/thazhemadam)\
**Replies:** 2\
**Last updated:** [May 3, 2022, 11:22am UTC](https://discourse.julialang.org/t/cannot-use-apps-created-with-packagecompiler-that-have-llvm-jl-in-them/79986 "2022-05-03T11:22:05Z")

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I’m trying to create an app with LLVM.jl in it. The create\_app call runs successfully, but I get an error when I try to run the app itself because the LLVMExtra artifact is apparently not downloaded and set up while the…

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## [Plot model stability region depending on parameters](https://discourse.julialang.org/t/plot-model-stability-region-depending-on-parameters/79584)

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**Author:** [@Sciemon](https://discourse.julialang.org/u/Sciemon)\
**Replies:** 8\
**Last updated:** [May 3, 2022, 10:23am UTC](https://discourse.julialang.org/t/plot-model-stability-region-depending-on-parameters/79584 "2022-05-03T10:23:27Z")

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I would like to plot the stability region of a (linearized) dynamic model at a certain operating point depending on model parameters. For example, assume that a model has parameters A and B. What I want is a plot that sh…

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## [Smoothing 2D data homogeneously regardless of resolution](https://discourse.julialang.org/t/smoothing-2d-data-homogeneously-regardless-of-resolution/80082)

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**Author:** [@Iddingsite](https://discourse.julialang.org/u/Iddingsite)\
**Replies:** 3\
**Last updated:** [May 3, 2022, 10:23am UTC](https://discourse.julialang.org/t/smoothing-2d-data-homogeneously-regardless-of-resolution/80082 "2022-05-03T10:23:22Z")

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Hi, I have 2D initial values for a model and I am trying to smooth it. I would say the easiest way is the apply a gaussian filter on it. My problem is that I don’t have the same resolution in y and in x. I would like to…

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## [What does @\_## mean in @code\_warntype (and other questions)?](https://discourse.julialang.org/t/what-does-mean-in-code-warntype-and-other-questions/80360)

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**Author:** [@HelgavonLichtenstein](https://discourse.julialang.org/u/HelgavonLichtenstein)\
**Replies:** 18\
**Last updated:** [May 3, 2022, 10:22am UTC](https://discourse.julialang.org/t/what-does-mean-in-code-warntype-and-other-questions/80360 "2022-05-03T10:22:03Z")

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Hello, I’m a very basic Julia user working on a model simulating a food web and fishing. The model works but I need to decrease the run time. I’ve read several tutorials about @code\_warntype and I understand I should de…

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## [Identify camera by name](https://discourse.julialang.org/t/identify-camera-by-name/79830)

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**Author:** [@yakir12](https://discourse.julialang.org/u/yakir12)\
**Replies:** 1\
**Last updated:** [May 3, 2022, 10:16am UTC](https://discourse.julialang.org/t/identify-camera-by-name/79830 "2022-05-03T10:16:23Z")

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Using VideoIO.jl, can I somehow get the “factory name” of the available cameras? I’d like to be able to select a specific camera. This should work across all platforms (so I can’t make a USB rule or similar). Here, I l…

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## [JuMP solution\_summary() not working](https://discourse.julialang.org/t/jump-solution-summary-not-working/80412)

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**Author:** [@naouess](https://discourse.julialang.org/u/naouess)\
**Replies:** 1\
**Last updated:** [May 3, 2022, 9:39am UTC](https://discourse.julialang.org/t/jump-solution-summary-not-working/80412 "2022-05-03T09:39:10Z")

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Hello, I have a simple jump model and it’s running. When I try to check the solution using solution\_summary, it gives me an error: UndefVarError: solution\_summary not defined Any idea why this is bugging? I’m using J…

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## [Julia registry not getting updated](https://discourse.julialang.org/t/julia-registry-not-getting-updated/80405)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 1\
**Last updated:** [May 3, 2022, 8:37am UTC](https://discourse.julialang.org/t/julia-registry-not-getting-updated/80405 "2022-05-03T08:37:50Z")

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I updated my package https://github.com/ufechner7/KiteModels.jl to version 0.3.3 eight hours ago, but if I do: mkdir tmp cd tmp julia --project="." using Pkg Pkg.add("KiteModels") I still get version 0.3.2. Is the pac…

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## [The Bayesian SDE in the Turing tutorial issues an error](https://discourse.julialang.org/t/the-bayesian-sde-in-the-turing-tutorial-issues-an-error/73447)

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**Author:** [@lilianping](https://discourse.julialang.org/u/lilianping)\
**Replies:** 21\
**Last updated:** [May 3, 2022, 7:41am UTC](https://discourse.julialang.org/t/the-bayesian-sde-in-the-turing-tutorial-issues-an-error/73447 "2022-05-03T07:41:43Z")

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When I tried to run the code in the Turing tutorial, the following error occurred when running to beyesianSDE, why is it?

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## [How do I enable ANSI colored text output within Documenter.jl?](https://discourse.julialang.org/t/how-do-i-enable-ansi-colored-text-output-within-documenter-jl/48398)

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**Author:** [@kimikage](https://discourse.julialang.org/u/kimikage)\
**Replies:** 14\
**Last updated:** [May 3, 2022, 7:31am UTC](https://discourse.julialang.org/t/how-do-i-enable-ansi-colored-text-output-within-documenter-jl/48398 "2022-05-03T07:31:12Z")

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Hi, I’m currently developing a package in which coloring plays an important role. The HTML output of Documenter.jl writes raw ANSI escape codes for text output such as @example as shown in the upper block in the screens…

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## [Removing the boundary line for plot "fillrange"](https://discourse.julialang.org/t/removing-the-boundary-line-for-plot-fillrange/80404)

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**Author:** [@Nash](https://discourse.julialang.org/u/Nash)\
**Replies:** 1\
**Last updated:** [May 3, 2022, 7:02am UTC](https://discourse.julialang.org/t/removing-the-boundary-line-for-plot-fillrange/80404 "2022-05-03T07:02:28Z")

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The following code produces a line at the bottom limit of the fill range. My question is simply, “how can i remove that line”? \`plot(x, bottom, fillrange = top, fillalpha = 0.15, c = 1, label = "Confidence")\`

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## [\[ANN\] Airtable.jl - an (unofficial) interface for the Airtable API](https://discourse.julialang.org/t/ann-airtable-jl-an-unofficial-interface-for-the-airtable-api/48700)

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**Author:** [@kevbonham](https://discourse.julialang.org/u/kevbonham)\
**Replies:** 15\
**Last updated:** [May 3, 2022, 5:35am UTC](https://discourse.julialang.org/t/ann-airtable-jl-an-unofficial-interface-for-the-airtable-api/48700 "2022-05-03T05:35:00Z")

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Airtable is a neat little web service for building relational databases, and I recently put together this little package for interfacing with the Airtable API (that link is a referral link - if you make an account, you a…

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## [GLMakie: Length of the arrows](https://discourse.julialang.org/t/glmakie-length-of-the-arrows/80327)

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**Author:** [@yashi](https://discourse.julialang.org/u/yashi)\
**Replies:** 1\
**Last updated:** [May 3, 2022, 1:34am UTC](https://discourse.julialang.org/t/glmakie-length-of-the-arrows/80327 "2022-05-03T01:34:24Z")

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Is there better way to align the tip of the red arrow head to the surface of the sphere? It seems arrows() draws arrow tail (the straight line) and adds the arrow head. Thus the total length of the arrow is the directi…

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## [Apples to apples comparison of A\\b with Float64 and Float16 on A64FX](https://discourse.julialang.org/t/apples-to-apples-comparison-of-a-b-with-float64-and-float16-on-a64fx/76096)

<div class="topic-metadata">

**Author:** [@bburnett](https://discourse.julialang.org/u/bburnett)\
**Replies:** 12\
**Last updated:** [May 2, 2022, 11:37pm UTC](https://discourse.julialang.org/t/apples-to-apples-comparison-of-a-b-with-float64-and-float16-on-a64fx/76096 "2022-05-02T23:37:16Z")

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Hi all, sorry if this is a weird newbie question but I’ll go ahead and ask in hopes to learn something. I recently followed the advice in this github issues page to build Julia to not escalate Float16 to Float32 for arit…

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## [Plot lines in the gaps between subplots](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172)

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**Author:** [@chunjiw](https://discourse.julialang.org/u/chunjiw)\
**Replies:** 3\
**Last updated:** [May 2, 2022, 9:34pm UTC](https://discourse.julialang.org/t/plot-lines-in-the-gaps-between-subplots/80172 "2022-05-02T21:34:04Z")

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Is it possible to plot lines in the gaps between subplots? For example, the two black lines indicating that the bottom plot is a zoom-in view of the top plot: Thanks for any help!

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