# Latest

**URL:** https://discourse.julialang.org/latest.md?page=436

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

**Page:** 437

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## [Nimble, newest optimized big-data storage format](https://discourse.julialang.org/t/nimble-newest-optimized-big-data-storage-format/112810)

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**Author:** [@Dan](https://discourse.julialang.org/u/Dan)\
**Replies:** 3\
**Last updated:** [April 11, 2024, 12:19pm UTC](https://discourse.julialang.org/t/nimble-newest-optimized-big-data-storage-format/112810 "2024-04-11T12:19:53Z")

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Interesting talk about an upcoming open-source data format from Meta called Nimble. It has some nice optimizations. Julia is pretty good with data and with optimizations, so it might be interesting to support this format…

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## [Understanding Meshes and GeoTables visualisation capabilities](https://discourse.julialang.org/t/understanding-meshes-and-geotables-visualisation-capabilities/110353)

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**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 13\
**Last updated:** [April 11, 2024, 12:47pm UTC](https://discourse.julialang.org/t/understanding-meshes-and-geotables-visualisation-capabilities/110353 "2024-04-11T12:47:35Z")

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I’m currently testing Meshes.jl and GeoTables to see if they can be useful for my finite element analyses. Part of the logic still feels a bit weird to me (attaching data to a topology feels a bit restrictive, but that i…

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## [Cairomakie inset plot at specific (x,y) coordinates](https://discourse.julialang.org/t/cairomakie-inset-plot-at-specific-x-y-coordinates/84797)

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**Author:** [@Salmon](https://discourse.julialang.org/u/Salmon)\
**Replies:** 3\
**Last updated:** [April 11, 2024, 12:15pm UTC](https://discourse.julialang.org/t/cairomakie-inset-plot-at-specific-x-y-coordinates/84797 "2024-04-11T12:15:54Z")

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Hi Guys, by using BBox() one can create an inset plot. The location is determined by the arguments, which are given as pixels. This works mostly but for certain use cases, it would be nice to specify an absolute locati…

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## [FibreHR hiring for Julia programming with PhD in operations research](https://discourse.julialang.org/t/fibrehr-hiring-for-julia-programming-with-phd-in-operations-research/112827)

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**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 0\
**Last updated:** [April 11, 2024, 11:32am UTC](https://discourse.julialang.org/t/fibrehr-hiring-for-julia-programming-with-phd-in-operations-research/112827 "2024-04-11T11:32:25Z")

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## [Difference between project.toml and required package versions](https://discourse.julialang.org/t/difference-between-project-toml-and-required-package-versions/112818)

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**Author:** [@ovanvincq](https://discourse.julialang.org/u/ovanvincq)\
**Replies:** 3\
**Last updated:** [April 11, 2024, 11:15am UTC](https://discourse.julialang.org/t/difference-between-project-toml-and-required-package-versions/112818 "2024-04-11T11:15:16Z")

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Can anyone explain to me why the package MMG\_jll.jl cannot be installed with version 7 of SCOTCH\_jll.jl ? When installing MMG\_jll.jl, Pkg installs the version 6 of SCOTCH\_jll.jl and I cannot upgrade it to version 7 with…

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## [Running Julia in a SLURM Cluster](https://discourse.julialang.org/t/running-julia-in-a-slurm-cluster/67614)

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**Author:** [@Noah\_Guzman](https://discourse.julialang.org/u/Noah_Guzman)\
**Replies:** 6\
**Last updated:** [April 11, 2024, 11:11am UTC](https://discourse.julialang.org/t/running-julia-in-a-slurm-cluster/67614 "2024-04-11T11:11:15Z")

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I’m looking to provide an explicit explanation of the simplest way to get a Julia program running in parallel across multiple nodes in a SLURM cluster (basically a minimal working example that illustrates the logic). My…

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## [Understanding Distributed Programming in Julia](https://discourse.julialang.org/t/understanding-distributed-programming-in-julia/112801)

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**Author:** [@Utkarsh\_Sharma](https://discourse.julialang.org/u/Utkarsh_Sharma)\
**Replies:** 3\
**Last updated:** [April 11, 2024, 10:16am UTC](https://discourse.julialang.org/t/understanding-distributed-programming-in-julia/112801 "2024-04-11T10:16:35Z")

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According to the documentation, fetch() will - Wait for a \[\`Task’\] (Tasks · The Julia Language) to finish, then return its result value. For the code and its output given below, I have the following questions - How d…

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## [Voltage source and ideal capacitor. Incorrect problem](https://discourse.julialang.org/t/voltage-source-and-ideal-capacitor-incorrect-problem/112275)

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**Author:** [@andrey.ilinskiy](https://discourse.julialang.org/u/andrey.ilinskiy)\
**Replies:** 3\
**Last updated:** [April 11, 2024, 10:07am UTC](https://discourse.julialang.org/t/voltage-source-and-ideal-capacitor-incorrect-problem/112275 "2024-04-11T10:07:11Z")

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Hello, everyone! I have some trouble with simple electric circuit: voltage source and custom RC. If R isn’t equal to zero everything is good, code works. using ModelingToolkit, DifferentialEquations import ModelingToo…

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## [How to differentiate using Zygote in the presence of missing values](https://discourse.julialang.org/t/how-to-differentiate-using-zygote-in-the-presence-of-missing-values/112822)

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**Author:** [@Nikos\_Gianniotis](https://discourse.julialang.org/u/Nikos_Gianniotis)\
**Replies:** 0\
**Last updated:** [April 11, 2024, 10:05am UTC](https://discourse.julialang.org/t/how-to-differentiate-using-zygote-in-the-presence-of-missing-values/112822 "2024-04-11T10:05:18Z")

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I have encountered a problem in my code. While I cannot easily write a MWE for my particular case, I thought that perhaps dealing with the following issue would help me further. Let us say, that we have some data y and…

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## [Help with using @cfunction and arrays](https://discourse.julialang.org/t/help-with-using-cfunction-and-arrays/112717)

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**Author:** [@dmitry-kabanov](https://discourse.julialang.org/u/dmitry-kabanov)\
**Replies:** 2\
**Last updated:** [April 11, 2024, 9:33am UTC](https://discourse.julialang.org/t/help-with-using-cfunction-and-arrays/112717 "2024-04-11T09:33:37Z")

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Hi, I try to do Julia C API embedding, and I struggle with using @cfunction to work with arguments of the array type. I get a segmentation fault that is not very clear to me. MWE: Julia code jl\_qeq\_solver.jl: module …

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## [Precompilation error using Distributed on HPC](https://discourse.julialang.org/t/precompilation-error-using-distributed-on-hpc/109823)

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**Author:** [@hijit](https://discourse.julialang.org/u/hijit)\
**Replies:** 4\
**Last updated:** [April 11, 2024, 8:48am UTC](https://discourse.julialang.org/t/precompilation-error-using-distributed-on-hpc/109823 "2024-04-11T08:48:44Z")

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I keep getting the following strange error from each of the workers when running my code on multiple workers in an HPC environment: Warning: Module Distributed with build ID … is missing from the cache. This may mean D…

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## [SISAP 2023 Indexing Challenge](https://discourse.julialang.org/t/sisap-2023-indexing-challenge/97431)

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**Author:** [@Eric\_Sadit\_Tellez](https://discourse.julialang.org/u/Eric_Sadit_Tellez)\
**Replies:** 1\
**Last updated:** [April 11, 2024, 4:17am UTC](https://discourse.julialang.org/t/sisap-2023-indexing-challenge/97431 "2024-04-11T04:17:24Z")

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Recently, I have been co-organizing a similarity search challenge involving LAION clip embeddings. The challenge will be a particular track of the SISAP2023 conference, to be held in La Coruña, España. You can find mor…

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## [Interpolate monthly time series to daily](https://discourse.julialang.org/t/interpolate-monthly-time-series-to-daily/112815)

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**Author:** [@SF\_Li](https://discourse.julialang.org/u/SF_Li)\
**Replies:** 0\
**Last updated:** [April 11, 2024, 2:08am UTC](https://discourse.julialang.org/t/interpolate-monthly-time-series-to-daily/112815 "2024-04-11T02:08:39Z")

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Is there a similar package in Julia to Interpolate monthly time series to daily using a mean-preserving autoregressive method dealing with raster data? I found that in R but it is very very slow! The function is int\_acm …

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## [Proper optim pkg install](https://discourse.julialang.org/t/proper-optim-pkg-install/112806)

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**Author:** [@dkn](https://discourse.julialang.org/u/dkn)\
**Replies:** 1\
**Last updated:** [April 11, 2024, 12:56am UTC](https://discourse.julialang.org/t/proper-optim-pkg-install/112806 "2024-04-11T00:56:42Z")

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Hello I’ve been using MatLab for decade fo numerical analysis Just foundout Julia and start using in Optimization But Igot so much err in using Otim pkg even after pkg.add(“Optim”) How to do it properly The procedur…

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## [Reduce + hcat is type unstable](https://discourse.julialang.org/t/reduce-hcat-is-type-unstable/112800)

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**Author:** [@mtanneau](https://discourse.julialang.org/u/mtanneau)\
**Replies:** 4\
**Last updated:** [April 11, 2024, 12:29am UTC](https://discourse.julialang.org/t/reduce-hcat-is-type-unstable/112800 "2024-04-11T00:29:32Z")

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I have observed the following type instability when using reduce + hcat as follows (see examples below). Is this intended? Could it be related to issue#46331? More context: I am using this syntax, as recommended here., …

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## [RQ decomposition](https://discourse.julialang.org/t/rq-decomposition/112795)

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**Author:** [@RJDennis](https://discourse.julialang.org/u/RJDennis)\
**Replies:** 12\
**Last updated:** [April 10, 2024, 11:13pm UTC](https://discourse.julialang.org/t/rq-decomposition/112795 "2024-04-10T23:13:04Z")

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Hi, can anyone point me to a Julia implementation of the RQ decomposition. Thanks.

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## [Error when defining PINN optimizer](https://discourse.julialang.org/t/error-when-defining-pinn-optimizer/112786)

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**Author:** [@Donald](https://discourse.julialang.org/u/Donald)\
**Replies:** 2\
**Last updated:** [April 10, 2024, 11:05pm UTC](https://discourse.julialang.org/t/error-when-defining-pinn-optimizer/112786 "2024-04-10T23:05:47Z")

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Hello. I’m trying to replicate this example in the NeuralPDE.jl documentation, but with a different PDE. I’m getting an error when I define the optimizer for the PINN. Here is my code: using NeuralPDE, Lux, ModelingTool…

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## [Julia v1.11.0-beta1 is now available](https://discourse.julialang.org/t/julia-v1-11-0-beta1-is-now-available/112808)

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**Author:** [@ararslan](https://discourse.julialang.org/u/ararslan)\
**Replies:** 0\
**Last updated:** [April 10, 2024, 10:47pm UTC](https://discourse.julialang.org/t/julia-v1-11-0-beta1-is-now-available/112808 "2024-04-10T22:47:12Z")

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The Julia developers are pleased to announce that Julia v1.11.0 is now in beta. You can download binaries for the first beta release, v1.11.0-beta1, using JuliaUp or from https://julialang.org/downloads/ in the “upcoming…

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## [Collaboration call - photometric methods for visual tracking](https://discourse.julialang.org/t/collaboration-call-photometric-methods-for-visual-tracking/111926)

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**Author:** [@user664303](https://discourse.julialang.org/u/user664303)\
**Replies:** 6\
**Last updated:** [April 10, 2024, 9:15pm UTC](https://discourse.julialang.org/t/collaboration-call-photometric-methods-for-visual-tracking/111926 "2024-04-10T21:15:56Z")

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I’m seeking one or more collaborators to help implement an open-source Julia implementation of a photometric method (sometimes also referred to as a direct method) for visual tracking, i.e. tracking objects or camera mot…

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## [\[Ann\] MeshCat.jl for 3D visualization in the browser](https://discourse.julialang.org/t/ann-meshcat-jl-for-3d-visualization-in-the-browser/9521)

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**Author:** [@rdeits](https://discourse.julialang.org/u/rdeits)\
**Replies:** 2\
**Last updated:** [April 10, 2024, 9:05pm UTC](https://discourse.julialang.org/t/ann-meshcat-jl-for-3d-visualization-in-the-browser/9521 "2024-04-10T21:05:06Z")

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I’m happy to announce the release of MeshCat.jl v0.0.1: https://github.com/rdeits/MeshCat.jl MeshCat.jl is a relatively small package that tries to make it easy to visualize a tree of 3D objects and transforms. All of t…

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## [Documenter.jl no method matching deploy\_folder](https://discourse.julialang.org/t/documenter-jl-no-method-matching-deploy-folder/112306)

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**Author:** [@irslushy](https://discourse.julialang.org/u/irslushy)\
**Replies:** 2\
**Last updated:** [April 10, 2024, 8:39pm UTC](https://discourse.julialang.org/t/documenter-jl-no-method-matching-deploy-folder/112306 "2024-04-10T20:39:46Z")

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Hello - I’m working on deploying documentation for my package. The contents of my make.jl file are as follows: push!(LOAD\_PATH,"../src/") using Documenter, RadarQC makedocs(sitename="RadarQC.jl", modules= \[Rad…

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## [Nearest Neighbor Interpolation on Matrix to Match Another's Non-Zero Structure](https://discourse.julialang.org/t/nearest-neighbor-interpolation-on-matrix-to-match-anothers-non-zero-structure/111859)

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**Author:** [@vivekag7](https://discourse.julialang.org/u/vivekag7)\
**Replies:** 13\
**Last updated:** [April 10, 2024, 2:21pm UTC](https://discourse.julialang.org/t/nearest-neighbor-interpolation-on-matrix-to-match-anothers-non-zero-structure/111859 "2024-04-10T14:21:49Z")

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Hello, Julia Community! I am working with two matrices: C\_values, which contains parameter values obtained from an optimization process, and V, which represents observed ice surface velocity (please see the attached ima…

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## [\`UndefVarError\` thrown in defined variable](https://discourse.julialang.org/t/undefvarerror-thrown-in-defined-variable/112779)

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**Author:** [@azeredo-e](https://discourse.julialang.org/u/azeredo-e)\
**Replies:** 2\
**Last updated:** [April 10, 2024, 4:34pm UTC](https://discourse.julialang.org/t/undefvarerror-thrown-in-defined-variable/112779 "2024-04-10T16:34:39Z")

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I have a code that is throwing an UndefVarError even though the variable exists. for code in (Struct(i) for i in Tuple(...)) @assert typeof(code.name) \<: AbstractString # Error: \`code\` not defined Struct() is an im…

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## [JuliaCon 2024 Speaker Tickets are Now Available](https://discourse.julialang.org/t/juliacon-2024-speaker-tickets-are-now-available/112787)

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**Author:** [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Replies:** 0\
**Last updated:** [April 10, 2024, 4:05pm UTC](https://discourse.julialang.org/t/juliacon-2024-speaker-tickets-are-now-available/112787 "2024-04-10T16:05:04Z")

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Speakers for JuliaCon 2024 are required to purchase a ticket, but a discount is available. If you are speaker for JuliaCon 2024, you should have received an access code regarding how to obtain discounted tickets for Juli…

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## [DiffEq: Discrete callback causes dt\<=dtmin](https://discourse.julialang.org/t/diffeq-discrete-callback-causes-dt-dtmin/104679)

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**Author:** [@aaliqureshi](https://discourse.julialang.org/u/aaliqureshi)\
**Replies:** 6\
**Last updated:** [April 10, 2024, 4:07pm UTC](https://discourse.julialang.org/t/diffeq-discrete-callback-causes-dt-dtmin/104679 "2024-04-10T16:07:50Z")

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Hello! I am simulating a DAE model as an ODEProblem using a constant mass matrix. A model parameter p changes from 0 to 1 at time t=t1 using DiscreteCallback. The solver returns dt\<=dtmin at t=t1 when p changes. Howeve…

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## [JuliaCon Financial Aid Decisions to be Decided by Early May 2024](https://discourse.julialang.org/t/juliacon-financial-aid-decisions-to-be-decided-by-early-may-2024/112790)

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**Author:** [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Replies:** 0\
**Last updated:** [April 10, 2024, 4:07pm UTC](https://discourse.julialang.org/t/juliacon-financial-aid-decisions-to-be-decided-by-early-may-2024/112790 "2024-04-10T16:07:06Z")

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We have received a number of inquiries regarding financial aid decisions for those who have applied earlier. The decsisions are forthcoming and are expected to made sometime this month. Please be patient.

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## [Bushes instead of text](https://discourse.julialang.org/t/bushes-instead-of-text/112663)

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**Author:** [@qqs\_qqs](https://discourse.julialang.org/u/qqs_qqs)\
**Replies:** 4\
**Last updated:** [April 10, 2024, 3:54pm UTC](https://discourse.julialang.org/t/bushes-instead-of-text/112663 "2024-04-10T15:54:05Z")

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I have this simple (or so I thought) code in which I wanted to generate random texts in files: z = \[“b”, “5”, “x”\] for k in 1:10 how much = rand(3:50) filename = “job1\_$k.txt” file = open(filename, “in”) for i in 1…

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## [I cannot use Julia kernel in Jupyter Notebook/Jupyter lab after updating to Julia 1.9.0](https://discourse.julialang.org/t/i-cannot-use-julia-kernel-in-jupyter-notebook-jupyter-lab-after-updating-to-julia-1-9-0/99649)

<div class="topic-metadata">

**Author:** [@arinbasu](https://discourse.julialang.org/u/arinbasu)\
**Replies:** 15\
**Last updated:** [April 10, 2024, 3:46pm UTC](https://discourse.julialang.org/t/i-cannot-use-julia-kernel-in-jupyter-notebook-jupyter-lab-after-updating-to-julia-1-9-0/99649 "2024-04-10T15:46:19Z")

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I have installed Jupyter Lab, and IJulia. Now if I do $ jupyter lab, I get to see the Jupyter Lab web interface, where if I select “Julia-1.9.0 kernel”, the kernel does not load, and in the terminal I see the followin…

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## [BoundsError in CartesianIndices on 32-bit Windows](https://discourse.julialang.org/t/boundserror-in-cartesianindices-on-32-bit-windows/112777)

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**Author:** [@Expine](https://discourse.julialang.org/u/Expine)\
**Replies:** 3\
**Last updated:** [April 10, 2024, 3:31pm UTC](https://discourse.julialang.org/t/boundserror-in-cartesianindices-on-32-bit-windows/112777 "2024-04-10T15:31:00Z")

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Hi! I experienced Integer overflow on Windows due to the fact that Int32 is the default one there: length(CartesianIndices((1000000, 1000000))) Succeeds on linux64 but fails on Windows (something like A\[-72232\] is out…

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## [Unexpected end of data when updating registries with LocalPackageServer](https://discourse.julialang.org/t/unexpected-end-of-data-when-updating-registries-with-localpackageserver/112782)

<div class="topic-metadata">

**Author:** [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Replies:** 4\
**Last updated:** [April 10, 2024, 1:39am UTC](https://discourse.julialang.org/t/unexpected-end-of-data-when-updating-registries-with-localpackageserver/112782 "2024-04-10T01:39:40Z")

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I’m also seeing errors updating registries today: (@v1.10) pkg\> st Installing known registries into \`/usr/local/julia/depot\` ERRORS: Unexpected end of archive ERROR: Unexpected end of data : jl\_E7Sdw3SLa9~ ┌ Warning…

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