# Latest

**URL:** https://discourse.julialang.org/latest.md?page=595

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

**Page:** 596

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## [CSV.read very slow when number of threads changed](https://discourse.julialang.org/t/csv-read-very-slow-when-number-of-threads-changed/103991)

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**Author:** [@pascal](https://discourse.julialang.org/u/pascal)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 3:53pm UTC](https://discourse.julialang.org/t/csv-read-very-slow-when-number-of-threads-changed/103991 "2023-09-18T15:53:22Z")

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I want to read in a csv file with ~5000 lines which is usually very fast. But when I start Julia with --threads=10 or --threads=auto waiting times for CSV.read are going through the roof. So, how can I have both, fast C…

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## [\[RFC\] Kirstine.jl - Bayesian Optimal Design for Nonlinear Regression](https://discourse.julialang.org/t/rfc-kirstine-jl-bayesian-optimal-design-for-nonlinear-regression/103993)

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**Author:** [@lsandig](https://discourse.julialang.org/u/lsandig)\
**Replies:** 0\
**Last updated:** [September 18, 2023, 3:50pm UTC](https://discourse.julialang.org/t/rfc-kirstine-jl-bayesian-optimal-design-for-nonlinear-regression/103993 "2023-09-18T15:50:46Z")

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I wrote Kirstine.jl, a package for finding Bayesian optimal designs for nonlinear regression models, i.e. for answering the question “What proportion of measurements should I take at which covariate settings in order to …

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## [Problem generating NoiseProcess following example in docs](https://discourse.julialang.org/t/problem-generating-noiseprocess-following-example-in-docs/103972)

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**Author:** [@KalelR](https://discourse.julialang.org/u/KalelR)\
**Replies:** 3\
**Last updated:** [September 18, 2023, 3:11pm UTC](https://discourse.julialang.org/t/problem-generating-noiseprocess-following-example-in-docs/103972 "2023-09-18T15:11:27Z")

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Hey! I’ve been trying to follow the example in DiffEqNoiseProcess.jl on how to create a NoiseProcess generating gaussian white noise. The code is basically using DiffEqNoiseProcess @inline function WHITE\_NOISE\_DIST(W…

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## [How to store all in Julia](https://discourse.julialang.org/t/how-to-store-all-in-julia/103215)

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**Author:** [@R0033h](https://discourse.julialang.org/u/R0033h)\
**Replies:** 10\
**Last updated:** [September 18, 2023, 10:07am UTC](https://discourse.julialang.org/t/how-to-store-all-in-julia/103215 "2023-09-18T10:07:40Z")

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Could please tell me i want to save all output. what should i do. I tried use CVS and Excel but i could not. It means should i create file for each loop i wrote (println) or what.

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## [Definition of an integral function whose argument is the upper limit of integration](https://discourse.julialang.org/t/definition-of-an-integral-function-whose-argument-is-the-upper-limit-of-integration/103946)

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**Author:** [@aburousan](https://discourse.julialang.org/u/aburousan)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 2:01pm UTC](https://discourse.julialang.org/t/definition-of-an-integral-function-whose-argument-is-the-upper-limit-of-integration/103946 "2023-09-18T14:01:55Z")

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Hi, I want to define a function let’s say, $$ f(x) = \\int\_0^x u^2 du /(e^{u^2+16} +1)^{\\frac{3/2}}$$ How can I do this?, A naive approach is to use a loop and just each time calculate the whole thing. But is there any…

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## [Pinv not Type Stable?](https://discourse.julialang.org/t/pinv-not-type-stable/103885)

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**Author:** [@AlexanderNenninger](https://discourse.julialang.org/u/AlexanderNenninger)\
**Replies:** 15\
**Last updated:** [September 18, 2023, 2:01pm UTC](https://discourse.julialang.org/t/pinv-not-type-stable/103885 "2023-09-18T14:01:13Z")

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Why is LinearAlgebra.pinv not type stable? Can it be implemented in a type stable way? Example (thanks to @albheim) using LinearAlgebra using JET function test(M) A = rand(M, M + 2) pinv(A) end test(10) repor…

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## [Use 2d marker in Makie \`meshscatter\`](https://discourse.julialang.org/t/use-2d-marker-in-makie-meshscatter/103978)

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**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 16\
**Last updated:** [September 18, 2023, 1:59pm UTC](https://discourse.julialang.org/t/use-2d-marker-in-makie-meshscatter/103978 "2023-09-18T13:59:22Z")

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Hello ! I’m trying to display a large set of 3D points (about 80k) with GLMakie. Initially, I used meshscatter, unfortunately my PC doesn’t have a discrete GPU so I’m trying to reduce the stress on the iGPU by using sc…

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## [Gadfly is the best plotting library I've ever used](https://discourse.julialang.org/t/gadfly-is-the-best-plotting-library-ive-ever-used/57887)

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**Author:** [@tbenst](https://discourse.julialang.org/u/tbenst)\
**Replies:** 15\
**Last updated:** [September 18, 2023, 1:56pm UTC](https://discourse.julialang.org/t/gadfly-is-the-best-plotting-library-ive-ever-used/57887 "2023-09-18T13:56:32Z")

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I’ve used ggplot2, matplotlib, bokeh, seaborn, holoviews, VegaLite, plotly, Plots.jl, among many others, and Gadfly is the most productive & principled plotting library I’ve used yet. If you haven’t already given it a go…

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## [With julia-1.9, should the main task block :interactive tasks?](https://discourse.julialang.org/t/with-julia-1-9-should-the-main-task-block-interactive-tasks/92809)

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**Author:** [@robsmith11](https://discourse.julialang.org/u/robsmith11)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 1:56pm UTC](https://discourse.julialang.org/t/with-julia-1-9-should-the-main-task-block-interactive-tasks/92809 "2023-09-18T13:56:00Z")

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According to julia\> Threads.threadpool() :default the main task shouldn’t be using the :interactive thread pool, but whenever I run a busy loop on the main thread, any tasks spawned from the :interactive thread pool ar…

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## [Performant reading of .tar.xz files](https://discourse.julialang.org/t/performant-reading-of-tar-xz-files/103912)

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**Author:** [@trace\_forms](https://discourse.julialang.org/u/trace_forms)\
**Replies:** 15\
**Last updated:** [September 18, 2023, 1:55pm UTC](https://discourse.julialang.org/t/performant-reading-of-tar-xz-files/103912 "2023-09-18T13:55:45Z")

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Hi there, I am trying to rapidly load data that is stored within .tar.xz files. Specifically, I am working with the genomic sequences and associated metadata for SARS-CoV-2 from GISAID. These come as separate .tar.xz fi…

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## [Error while installing DataFrames](https://discourse.julialang.org/t/error-while-installing-dataframes/103781)

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**Author:** [@Konstantin\_Kuznetsov](https://discourse.julialang.org/u/Konstantin_Kuznetsov)\
**Replies:** 3\
**Last updated:** [September 18, 2023, 1:30pm UTC](https://discourse.julialang.org/t/error-while-installing-dataframes/103781 "2023-09-18T13:30:38Z")

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Dear all, I have an error during installation of package DataFrames or DataDeps under Ubuntu 22.04 processor AMD (and also the same error on Apple M1 pro). The error is the following one: (@v1.9) pkg\> add DataFrames …

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## [Precompilation of package extension failure](https://discourse.julialang.org/t/precompilation-of-package-extension-failure/103983)

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**Author:** [@abelsiqueira](https://discourse.julialang.org/u/abelsiqueira)\
**Replies:** 0\
**Last updated:** [September 18, 2023, 1:10pm UTC](https://discourse.julialang.org/t/precompilation-of-package-extension-failure/103983 "2023-09-18T13:10:16Z")

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I have the following error when adding GraphIO and ParserCombinator in a brand new Julia 1.9.3 Linux installation: Warning: Module GraphIOGMLExt with build ID ffffffff-ffff-ffff-0000-177dba44e6bc is missing from the cac…

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## [Makie don't use full color range in volume plots. (What am I doing wrong ?)](https://discourse.julialang.org/t/makie-dont-use-full-color-range-in-volume-plots-what-am-i-doing-wrong/103785)

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**Author:** [@Knud\_Sorensen](https://discourse.julialang.org/u/Knud_Sorensen)\
**Replies:** 7\
**Last updated:** [September 18, 2023, 12:50pm UTC](https://discourse.julialang.org/t/makie-dont-use-full-color-range-in-volume-plots-what-am-i-doing-wrong/103785 "2023-09-18T12:50:23Z")

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Hi. I plot at 3D array using: f=volume(vol; colormap=:redsblues, colorrange=(-2.0,2.0), lowclip=:red, highclip=:blue) But the plot doesn’t contain red. What is worng ?

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## [MTK & efficient formulation](https://discourse.julialang.org/t/mtk-efficient-formulation/103971)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 1\
**Last updated:** [September 18, 2023, 12:41pm UTC](https://discourse.julialang.org/t/mtk-efficient-formulation/103971 "2023-09-18T12:41:41Z")

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I have a file with a number of models (ModelingToolkit-MTK, functions, etc.) where, say, temperature, is a parameter. I want to explore what happens for different parameter values (e.g., temperature). To make sure that I…

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## [Support for Intel Mac AMD GPUs](https://discourse.julialang.org/t/support-for-intel-mac-amd-gpus/103933)

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**Author:** [@keynescoefen](https://discourse.julialang.org/u/keynescoefen)\
**Replies:** 4\
**Last updated:** [September 18, 2023, 12:09pm UTC](https://discourse.julialang.org/t/support-for-intel-mac-amd-gpus/103933 "2023-09-18T12:09:00Z")

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Hi, I saw this topic here and wondered whether there were any updates: ? It says that only AMD architectures on Linux are supported. Is there any hope of changing that in the future or is it a lost cause? The thing i…

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## [Cointegration Johansen test and Autocorrelation Durbin Watson Test](https://discourse.julialang.org/t/cointegration-johansen-test-and-autocorrelation-durbin-watson-test/103950)

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**Author:** [@ginger\_snaps](https://discourse.julialang.org/u/ginger_snaps)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 10:21am UTC](https://discourse.julialang.org/t/cointegration-johansen-test-and-autocorrelation-durbin-watson-test/103950 "2023-09-18T10:21:37Z")

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Hello. I’m new in Julia, but I need some performance so I’m rewriting from R and Python to Julia but I have problems with built-in functions. I know that Julia is not as wide as R and Python, but I was sure that I would…

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## [How to add/query a dict that contains tens of millions of items?](https://discourse.julialang.org/t/how-to-add-query-a-dict-that-contains-tens-of-millions-of-items/103886)

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**Author:** [@leonchen2012](https://discourse.julialang.org/u/leonchen2012)\
**Replies:** 4\
**Last updated:** [September 18, 2023, 9:32am UTC](https://discourse.julialang.org/t/how-to-add-query-a-dict-that-contains-tens-of-millions-of-items/103886 "2023-09-18T09:32:29Z")

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I’m using a dict with struct key and struct value. Size of each key value pair is 0.5~3k bytes. The problem is that it can be accumulated to tens of millions of key-value pairs, which would cause OOM on my computer. I u…

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## [How to Simplify Sympy Symbolic Integration](https://discourse.julialang.org/t/how-to-simplify-sympy-symbolic-integration/103970)

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**Author:** [@Freya\_the\_Goddess](https://discourse.julialang.org/u/Freya_the_Goddess)\
**Replies:** 0\
**Last updated:** [September 18, 2023, 9:06am UTC](https://discourse.julialang.org/t/how-to-simplify-sympy-symbolic-integration/103970 "2023-09-18T09:06:51Z")

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Hi all, I have two circles of radius b, their centers 2a apart (0 \\le a \\le b). The question is, why is the SymPy computation resulting in a very complex formula? While in the solution manual it can be explained easily…

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## [2D Plot from Vector Function iy + jx -Div,Grad,Curl](https://discourse.julialang.org/t/2d-plot-from-vector-function-iy-jx-div-grad-curl/102390)

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**Author:** [@Freya\_the\_Goddess](https://discourse.julialang.org/u/Freya_the_Goddess)\
**Replies:** 3\
**Last updated:** [September 18, 2023, 9:03am UTC](https://discourse.julialang.org/t/2d-plot-from-vector-function-iy-jx-div-grad-curl/102390 "2023-09-18T09:03:25Z")

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Hi all, I am reading from this Div, Grad, Curl and All that by Schey and I was wondering how to plot this with Julia(what packages needed( GR/Makie??): this is the vector functions / the questions:

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## [Incorporating the ode within my neural network](https://discourse.julialang.org/t/incorporating-the-ode-within-my-neural-network/102549)

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**Author:** [@Marco\_Nesta](https://discourse.julialang.org/u/Marco_Nesta)\
**Replies:** 2\
**Last updated:** [September 18, 2023, 8:19am UTC](https://discourse.julialang.org/t/incorporating-the-ode-within-my-neural-network/102549 "2023-09-18T08:19:06Z")

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Good morning everyone, I am working on using neural ode for household consumption prediction using Rc models. Once I have created my solution and array. How can I make sure to incorporate the ode within the neural networ…

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## [Setting X Axis Using Plots](https://discourse.julialang.org/t/setting-x-axis-using-plots/103957)

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**Author:** [@eweiss](https://discourse.julialang.org/u/eweiss)\
**Replies:** 1\
**Last updated:** [September 18, 2023, 8:13am UTC](https://discourse.julialang.org/t/setting-x-axis-using-plots/103957 "2023-09-18T08:13:27Z")

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I’m trying to plot stock prices which are daily but not on weekends. When I run this code using Dates, DataFrames, Plots df = DataFrame(Date=today()+Month(-1):Day(1):today(), rtn = rand(Float64, 32)) ticks = round.(df.D…

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## [Benchmarking questions](https://discourse.julialang.org/t/benchmarking-questions/103961)

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**Author:** [@Leticia-maria](https://discourse.julialang.org/u/Leticia-maria)\
**Replies:** 3\
**Last updated:** [September 18, 2023, 6:20am UTC](https://discourse.julialang.org/t/benchmarking-questions/103961 "2023-09-18T06:20:08Z")

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Dear all, I was testing some acceleration of for loops (and reducing the allocations), and I made a less complex example for testing: Julia\>julia\> function test\_1(a,b) @views for i in 1:a, j in 1:b …

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## [How do I save my dictionary as a .csv (or excel) file?](https://discourse.julialang.org/t/how-do-i-save-my-dictionary-as-a-csv-or-excel-file/36791)

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**Author:** [@samantp](https://discourse.julialang.org/u/samantp)\
**Replies:** 7\
**Last updated:** [September 18, 2023, 2:08am UTC](https://discourse.julialang.org/t/how-do-i-save-my-dictionary-as-a-csv-or-excel-file/36791 "2023-09-18T02:08:37Z")

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I have a dictionary, which I want to save to an excel or csv file with keys in one column and the entries in another. The keys are strings and the entries are float64s. I thought about converting my dictionary to a DataF…

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## [Julia package for workflow management](https://discourse.julialang.org/t/julia-package-for-workflow-management/103947)

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**Author:** [@berceanu](https://discourse.julialang.org/u/berceanu)\
**Replies:** 5\
**Last updated:** [September 18, 2023, 1:54am UTC](https://discourse.julialang.org/t/julia-package-for-workflow-management/103947 "2023-09-18T01:54:43Z")

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Is there anything in the Julia ecosystem similar to GitHub - Libensemble/libensemble: A Python toolkit for coordinating asynchronous and dynamic ensembles of calculations. ?

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## [Questions about macro interpolation inside @generated](https://discourse.julialang.org/t/questions-about-macro-interpolation-inside-generated/103922)

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**Author:** [@matthias314](https://discourse.julialang.org/u/matthias314)\
**Replies:** 12\
**Last updated:** [September 17, 2023, 10:38pm UTC](https://discourse.julialang.org/t/questions-about-macro-interpolation-inside-generated/103922 "2023-09-17T22:38:26Z")

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I would like to have a macro @m f g that produces @generated function f(x) quote g(x) end end where f and g are the macro parameters. This has essentially been discussed in @simeonschaub’s solution, adapted to my …

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## [Non-code analysis documentation - TOML, YAML, something else?](https://discourse.julialang.org/t/non-code-analysis-documentation-toml-yaml-something-else/103918)

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**Author:** [@mkoculak](https://discourse.julialang.org/u/mkoculak)\
**Replies:** 6\
**Last updated:** [September 17, 2023, 6:49pm UTC](https://discourse.julialang.org/t/non-code-analysis-documentation-toml-yaml-something-else/103918 "2023-09-17T18:49:00Z")

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I am toying with an idea of having something like config files / pipeline documention in a form of human readable and writable format. It would be best to be language agnostic, so I can later write e.g. a parser in pytho…

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## [Sorting a matrix according to a matrix of column-wise sorted indices](https://discourse.julialang.org/t/sorting-a-matrix-according-to-a-matrix-of-column-wise-sorted-indices/103944)

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**Author:** [@kingoslo](https://discourse.julialang.org/u/kingoslo)\
**Replies:** 6\
**Last updated:** [September 17, 2023, 9:26pm UTC](https://discourse.julialang.org/t/sorting-a-matrix-according-to-a-matrix-of-column-wise-sorted-indices/103944 "2023-09-17T21:26:17Z")

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I have a matrix that looks like this: A = rand( 40000000,30000000) I have already used measurable computational power to find the indices that will sort it column-wise: idx = mapslices(sortperm, A, dims=1) Now I want…

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## [Problems using GLMakie on Windows 11](https://discourse.julialang.org/t/problems-using-glmakie-on-windows-11/103955)

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**Author:** [@Luis\_Manuel\_Espinoza](https://discourse.julialang.org/u/Luis_Manuel_Espinoza)\
**Replies:** 4\
**Last updated:** [September 17, 2023, 7:37pm UTC](https://discourse.julialang.org/t/problems-using-glmakie-on-windows-11/103955 "2023-09-17T19:37:27Z")

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I am currently developing various graphics using GLmakie on a desktop computer with Windows 10, I have had no problems using it but when I try to run my graphics on a laptop with Windows 11 it gives me the following, I a…

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## [Simulink-like block diagram editor for Julia?](https://discourse.julialang.org/t/simulink-like-block-diagram-editor-for-julia/78391)

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**Author:** [@pitsianis](https://discourse.julialang.org/u/pitsianis)\
**Replies:** 8\
**Last updated:** [September 17, 2023, 7:25pm UTC](https://discourse.julialang.org/t/simulink-like-block-diagram-editor-for-julia/78391 "2023-09-17T19:25:06Z")

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Is there any effort to build a block diagram editor for Julia to use with systems like ModelingToolkit.jl and Causal.jl?

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## [\[ANN\] PriorityChannels.jl](https://discourse.julialang.org/t/ann-prioritychannels-jl/19234)

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**Author:** [@baggepinnen](https://discourse.julialang.org/u/baggepinnen)\
**Replies:** 5\
**Last updated:** [September 17, 2023, 6:49pm UTC](https://discourse.julialang.org/t/ann-prioritychannels-jl/19234 "2023-09-17T18:49:04Z")

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I’ve created a small package PriorityChannels.jl that implements a PriorityChannel that mimics Base.Channel , but where each element is associated with a priority. take! always returns the highest priority element. In…

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