# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=300

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**Page:** 301

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## [Data augmentation for audio](https://discourse.julialang.org/t/data-augmentation-for-audio/31117)

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**Author:** [@baggepinnen](https://discourse.julialang.org/u/baggepinnen)\
**Replies:** 5\
**Last updated:** [February 25, 2022, 5:59am UTC](https://discourse.julialang.org/t/data-augmentation-for-audio/31117 "2022-02-25T05:59:32Z")

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Hey! We are likely to embark on an adventure to create something very similar to @Evizero’s excellent package Augmentor.jl, but for environmental acoustic recordings. I think the overall idea of Augmentor.jl looks solid…

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## [Differentiate spherical harmonics FastTransforms.jl](https://discourse.julialang.org/t/differentiate-spherical-harmonics-fasttransforms-jl/77038)

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**Author:** [@zhiwei](https://discourse.julialang.org/u/zhiwei)\
**Replies:** 0\
**Last updated:** [February 24, 2022, 8:07pm UTC](https://discourse.julialang.org/t/differentiate-spherical-harmonics-fasttransforms-jl/77038 "2022-02-24T20:07:29Z")

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Hello, I am trying to differentiate spherical harmonic expansion by first converting to bivariate Fourier series using the package FastTransforms.jl. Here’s what I have so far: julia\> N=15; julia\> M=2\*N-1; julia\> C=…

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## [How to test if values are randomly distributed in a matrix?](https://discourse.julialang.org/t/how-to-test-if-values-are-randomly-distributed-in-a-matrix/76966)

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**Author:** [@Fred](https://discourse.julialang.org/u/Fred)\
**Replies:** 6\
**Last updated:** [February 24, 2022, 6:09pm UTC](https://discourse.julialang.org/t/how-to-test-if-values-are-randomly-distributed-in-a-matrix/76966 "2022-02-24T18:09:55Z")

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Hi ! I build an image from a matrix with (X,Y) coordinates and intensities (I). Do you know a function to score the randomness of the intensities distribution in this matrix. In other words, is there a statistical test …

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## [How to download, extract and import a zipped or tgz csv file from internet?](https://discourse.julialang.org/t/how-to-download-extract-and-import-a-zipped-or-tgz-csv-file-from-internet/77025)

<div class="topic-metadata">

**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 1\
**Last updated:** [February 24, 2022, 4:10pm UTC](https://discourse.julialang.org/t/how-to-download-extract-and-import-a-zipped-or-tgz-csv-file-from-internet/77025 "2022-02-24T16:10:57Z")

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For a CSV file, I am using a combination of Pipe, HTTP and CSV to download, (eventually) modify the file and import it as a DataFrame without any temporary writing on disk: urlData = "https://github.com/sylvaticus/Intro…

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## [CUDA doesn't work](https://discourse.julialang.org/t/cuda-doesnt-work/75596)

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**Author:** [@vietanh.do](https://discourse.julialang.org/u/vietanh.do)\
**Replies:** 3\
**Last updated:** [February 24, 2022, 9:20am UTC](https://discourse.julialang.org/t/cuda-doesnt-work/75596 "2022-02-24T09:20:54Z")

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Hi there. I want to train the data through GPU. CUDA.jl ist installed, but when I check the Cuda function like has\_cuda(), it returns false. I have done these following things: all the drivers and programms updated (C…

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## [Anderson-Darling test pvalue](https://discourse.julialang.org/t/anderson-darling-test-pvalue/76929)

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**Author:** [@as4831](https://discourse.julialang.org/u/as4831)\
**Replies:** 5\
**Last updated:** [February 23, 2022, 10:37pm UTC](https://discourse.julialang.org/t/anderson-darling-test-pvalue/76929 "2022-02-23T22:37:12Z")

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Hi everyone, I’m using an Anderson-Darling test to check for normality and am unsure about the results. I am expecting to reject at the .01 level with a p-value around .008. The pvalue() call on the OneSampleADTest retur…

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## [Trying to understand parallel performance in Turing](https://discourse.julialang.org/t/trying-to-understand-parallel-performance-in-turing/74963)

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**Author:** [@Pablo\_Marchant](https://discourse.julialang.org/u/Pablo_Marchant)\
**Replies:** 6\
**Last updated:** [February 23, 2022, 10:00pm UTC](https://discourse.julialang.org/t/trying-to-understand-parallel-performance-in-turing/74963 "2022-02-23T22:00:44Z")

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Hi! I’ve been learning Turing for the last couple of weeks and while trying to make the most out of the 8 cores in my computer, I realized performance was not scaling as I expected when sampling multiple chains with mul…

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## [Tag each unique combination of column values in DataFrames](https://discourse.julialang.org/t/tag-each-unique-combination-of-column-values-in-dataframes/76203)

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**Author:** [@Gabriel\_Kreindler](https://discourse.julialang.org/u/Gabriel_Kreindler)\
**Replies:** 5\
**Last updated:** [February 23, 2022, 9:25pm UTC](https://discourse.julialang.org/t/tag-each-unique-combination-of-column-values-in-dataframes/76203 "2022-02-23T21:25:21Z")

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I have columns c1,c2, …, cN in a dataframe and I would like to create a column c\_new that takes a unique numeric value for each unique combination of values of c1,…, cN. If there a function to achieve this? (In Stata I…

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## [WMS - Web Map Services displays](https://discourse.julialang.org/t/wms-web-map-services-displays/14483)

<div class="topic-metadata">

**Author:** [@johnh](https://discourse.julialang.org/u/johnh)\
**Replies:** 12\
**Last updated:** [February 23, 2022, 8:30pm UTC](https://discourse.julialang.org/t/wms-web-map-services-displays/14483 "2022-02-23T20:30:45Z")

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May I ask if anyone is familiar with WMS displays of data Web Map Service - MATLAB & Simulink - MathWorks United Kingdom Web Map Service - Wikipedia I ask for a good reason, as I would like to do some example plots usi…

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## [JuMP dual inside loop](https://discourse.julialang.org/t/jump-dual-inside-loop/76895)

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**Author:** [@Mariana](https://discourse.julialang.org/u/Mariana)\
**Replies:** 2\
**Last updated:** [February 23, 2022, 7:35pm UTC](https://discourse.julialang.org/t/jump-dual-inside-loop/76895 "2022-02-23T19:35:19Z")

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Hello! I am trying to run a code using the dual function from JuMP inside a loop, but I’m not getting the results I expected. The code is a bit extensive, so I’ll try to put here the most relevant parts of the model fo…

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## [Vegalite.jl plot size in VS Code](https://discourse.julialang.org/t/vegalite-jl-plot-size-in-vs-code/76977)

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**Author:** [@Mastomaki](https://discourse.julialang.org/u/Mastomaki)\
**Replies:** 3\
**Last updated:** [February 23, 2022, 5:45pm UTC](https://discourse.julialang.org/t/vegalite-jl-plot-size-in-vs-code/76977 "2022-02-23T17:45:23Z")

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Hello! How can I make the VegaLite.jl @vlplot plots bigger in VS Code? Now it is just a bit bigger than my thumb.

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## [\`optimizer\_with\_attributes\` failing when called inside a module](https://discourse.julialang.org/t/optimizer-with-attributes-failing-when-called-inside-a-module/76912)

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**Author:** [@Di11on](https://discourse.julialang.org/u/Di11on)\
**Replies:** 2\
**Last updated:** [February 23, 2022, 4:40pm UTC](https://discourse.julialang.org/t/optimizer-with-attributes-failing-when-called-inside-a-module/76912 "2022-02-23T16:40:49Z")

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Hi folks, I am having some problems getting some code to run inside a module. It runs fine when run directly in the REPL. Here is it: mod\_name = Symbol("HiGHS") @eval using $mod\_name mod = getproperty(@\_\_MO…

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## [Best practices for dealing with NaNs in multiple data set using Turing](https://discourse.julialang.org/t/best-practices-for-dealing-with-nans-in-multiple-data-set-using-turing/70423)

<div class="topic-metadata">

**Author:** [@99dB](https://discourse.julialang.org/u/99dB)\
**Replies:** 2\
**Last updated:** [February 23, 2022, 3:44pm UTC](https://discourse.julialang.org/t/best-practices-for-dealing-with-nans-in-multiple-data-set-using-turing/70423 "2022-02-23T15:44:01Z")

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What is the best way to deal with NaNs in multiple data treatments when using Turing? For example, for this example tutorial from https://github.com/TuringLang/TuringTutorials/blob/master/tutorials/10-bayesian-different…

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## [Turing, Ordered Variables, and the Dirichlet Distribution](https://discourse.julialang.org/t/turing-ordered-variables-and-the-dirichlet-distribution/76970)

<div class="topic-metadata">

**Author:** [@wc4wc4wc4](https://discourse.julialang.org/u/wc4wc4wc4)\
**Replies:** 0\
**Last updated:** [February 23, 2022, 1:25pm UTC](https://discourse.julialang.org/t/turing-ordered-variables-and-the-dirichlet-distribution/76970 "2022-02-23T13:25:52Z")

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Hi all, I am trying to fit some diffusion data which we expect to be generated from two or more Rayleigh distributions. To make some data for the MWE, take the following example: function get\_data(; μ₁ = 1, μ₂ = 2, N …

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## [How to implement a Gaussian NN with covariance matrix?](https://discourse.julialang.org/t/how-to-implement-a-gaussian-nn-with-covariance-matrix/76704)

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**Author:** [@HenriDeh](https://discourse.julialang.org/u/HenriDeh)\
**Replies:** 7\
**Last updated:** [February 23, 2022, 11:28am UTC](https://discourse.julialang.org/t/how-to-implement-a-gaussian-nn-with-covariance-matrix/76704 "2022-02-23T11:28:56Z")

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Hello, I’m editing this question to make it clearer since I got no solution still :frowning:. I need to implement a NN that outputs a covariance matrix. Say we have N variables, I need to be able to compute a symetric …

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## [What plotting library to use for HEP](https://discourse.julialang.org/t/what-plotting-library-to-use-for-hep/76962)

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**Author:** [@shoram](https://discourse.julialang.org/u/shoram)\
**Replies:** 3\
**Last updated:** [February 23, 2022, 9:08am UTC](https://discourse.julialang.org/t/what-plotting-library-to-use-for-hep/76962 "2022-02-23T09:08:07Z")

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Hi all, I am starting my phd in particle physics and would love to use Julia for data analysis/visualization. Do you have any advice on what plotting library should I use which has the most ROOT (from CERN) features? Si…

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## [What is the currently recommended way to access a postgres database?](https://discourse.julialang.org/t/what-is-the-currently-recommended-way-to-access-a-postgres-database/75862)

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**Author:** [@met-j](https://discourse.julialang.org/u/met-j)\
**Replies:** 3\
**Last updated:** [February 23, 2022, 9:03am UTC](https://discourse.julialang.org/t/what-is-the-currently-recommended-way-to-access-a-postgres-database/75862 "2022-02-23T09:03:56Z")

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My search made it look like the LibPQ.jl wrapper would be the most popular way to access a PostgreSQL database. Is there something else I should look at?

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## [What does MLJ.save really save?](https://discourse.julialang.org/t/what-does-mlj-save-really-save/74606)

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**Author:** [@wc4wc4wc4](https://discourse.julialang.org/u/wc4wc4wc4)\
**Replies:** 12\
**Last updated:** [February 23, 2022, 8:31am UTC](https://discourse.julialang.org/t/what-does-mlj-save-really-save/74606 "2022-02-23T08:31:17Z")

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I am running a MLJ pipeline on a quite large dataset and I want to be able to save the model once, and then use it in later sessions without having to retrain it. I have tried following the documentation regarding saving…

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## [GenX model : Configurable Capacity Expansion Model](https://discourse.julialang.org/t/genx-model-configurable-capacity-expansion-model/76887)

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**Author:** [@iAnkiit](https://discourse.julialang.org/u/iAnkiit)\
**Replies:** 4\
**Last updated:** [February 23, 2022, 7:11am UTC](https://discourse.julialang.org/t/genx-model-configurable-capacity-expansion-model/76887 "2022-02-23T07:11:06Z")

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This model is developed for power generation and related stuff. It is completely written in Julia and JuMP. Can someone please help out with understanding of this model ? GenX model by MIT I need to understand the code…

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## [Where to discuss replacement of Rmath?](https://discourse.julialang.org/t/where-to-discuss-replacement-of-rmath/9671)

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**Author:** [@dmbates](https://discourse.julialang.org/u/dmbates)\
**Replies:** 26\
**Last updated:** [February 22, 2022, 10:18pm UTC](https://discourse.julialang.org/t/where-to-discuss-replacement-of-rmath/9671 "2022-02-22T22:18:34Z")

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A long-standing objective related to the Distributions and StatsFuns packages is to provide native Julia versions of various pdf (probability density or mass) and cdf (cumulative distribution) functions. The Rmath packa…

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## [Code listing in Makie.jl figure](https://discourse.julialang.org/t/code-listing-in-makie-jl-figure/74395)

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**Author:** [@willtebbutt](https://discourse.julialang.org/u/willtebbutt)\
**Replies:** 7\
**Last updated:** [February 22, 2022, 8:54pm UTC](https://discourse.julialang.org/t/code-listing-in-makie-jl-figure/74395 "2022-02-22T20:54:54Z")

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I’m interested in producing a figure using Makie with two sections. One section with a figure, another with a code listing (Julia code, of course). Has anyone tried this before / got any thoughts about how I could go abo…

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## [Segmentation fault when applying PCA to a big dataset on an HPC](https://discourse.julialang.org/t/segmentation-fault-when-applying-pca-to-a-big-dataset-on-an-hpc/76900)

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**Author:** [@Ivan](https://discourse.julialang.org/u/Ivan)\
**Replies:** 2\
**Last updated:** [February 22, 2022, 7:15pm UTC](https://discourse.julialang.org/t/segmentation-fault-when-applying-pca-to-a-big-dataset-on-an-hpc/76900 "2022-02-22T19:15:11Z")

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I understand the following may be due to the fact that I am using an HPC remote service. If that’s the case, I would appreciate comments on where to ask this question best. I have a big array (2765 x 12212224), and I wa…

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## [Optim user-supplied gradient and hessian MLE](https://discourse.julialang.org/t/optim-user-supplied-gradient-and-hessian-mle/76848)

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**Author:** [@luischanci](https://discourse.julialang.org/u/luischanci)\
**Replies:** 3\
**Last updated:** [February 22, 2022, 5:19pm UTC](https://discourse.julialang.org/t/optim-user-supplied-gradient-and-hessian-mle/76848 "2022-02-22T17:19:10Z")

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I’m moving my MLE class notes to incorporate Julia, so I’m exploring how to incorporate the analytical gradient and hessian into an optimization problem using Optim. I created a toy model to check the commands first. Ho…

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## [Passing CuArray to PyTorch Tensor](https://discourse.julialang.org/t/passing-cuarray-to-pytorch-tensor/23067)

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**Author:** [@gdestouet](https://discourse.julialang.org/u/gdestouet)\
**Replies:** 7\
**Last updated:** [February 22, 2022, 12:01am UTC](https://discourse.julialang.org/t/passing-cuarray-to-pytorch-tensor/23067 "2022-02-22T00:01:37Z")

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Hello everyone, I am actually using this to pass CuArrays to PyTorch Tensor : using PyCall tc = pyimport("torch") using CuArrays x=cu(randn(1024,1024)) @time tc.from\_numpy(Array(x)).cuda() 0.025017 seconds (62 alloca…

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## [Interactive Smith Chart](https://discourse.julialang.org/t/interactive-smith-chart/76862)

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**Author:** [@white-c](https://discourse.julialang.org/u/white-c)\
**Replies:** 4\
**Last updated:** [February 21, 2022, 10:05pm UTC](https://discourse.julialang.org/t/interactive-smith-chart/76862 "2022-02-21T22:05:59Z")

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I’m interested in having a Smith Chart that is interactive. I have seen static smith charts in some of Julia’s plotting ecosystem. I have found that Plotly has them in its Python library. Is there a way to get that in Pl…

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## [Link axis not working in Plots for marginal density](https://discourse.julialang.org/t/link-axis-not-working-in-plots-for-marginal-density/76857)

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**Author:** [@rwalters31](https://discourse.julialang.org/u/rwalters31)\
**Replies:** 0\
**Last updated:** [February 21, 2022, 7:04pm UTC](https://discourse.julialang.org/t/link-axis-not-working-in-plots-for-marginal-density/76857 "2022-02-21T19:04:52Z")

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I’m trying to put in marginal density plots above and to the right of x,y scatter data. I have tried the ‘link’ in both the :x, :y, and :both directions but as you can see the top figure does not match the axis of th…

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## [Segmentation fault error with JuMP and Ipopt on HPC cluster](https://discourse.julialang.org/t/segmentation-fault-error-with-jump-and-ipopt-on-hpc-cluster/67642)

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**Author:** [@Shuvomoy\_Das\_Gupta](https://discourse.julialang.org/u/Shuvomoy_Das_Gupta)\
**Replies:** 2\
**Last updated:** [September 3, 2021, 7:19pm UTC](https://discourse.julialang.org/t/segmentation-fault-error-with-jump-and-ipopt-on-hpc-cluster/67642 "2021-09-03T19:19:52Z")

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Dear All, I am trying to solve a large-scale optimization problem that uses JuMP and Ipopt. I get a signal (11): Segmentation fault error trying to run the code on an HPC cluster (details below), however if I switch to …

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## [How to use Bijectors.jl for model with simplex, am I doing right?](https://discourse.julialang.org/t/how-to-use-bijectors-jl-for-model-with-simplex-am-i-doing-right/76768)

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**Author:** [@pleochroite](https://discourse.julialang.org/u/pleochroite)\
**Replies:** 4\
**Last updated:** [February 21, 2022, 4:49pm UTC](https://discourse.julialang.org/t/how-to-use-bijectors-jl-for-model-with-simplex-am-i-doing-right/76768 "2022-02-21T16:49:50Z")

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Hello all, I am trying to translate a textbook written in R/Stan into Turing. Simple models such as logistic regression are easy for me to model. However, faced to advanced models with ordered/simplex constraints, I got…

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## [ANN: Simulated Neural Moments now uses Turing](https://discourse.julialang.org/t/ann-simulated-neural-moments-now-uses-turing/76843)

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**Author:** [@mcreel](https://discourse.julialang.org/u/mcreel)\
**Replies:** 0\
**Last updated:** [February 21, 2022, 2:59pm UTC](https://discourse.julialang.org/t/ann-simulated-neural-moments-now-uses-turing/76843 "2022-02-21T14:59:33Z")

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Following the simple example of ABC/MSM using Turing.jl (ABC / MSM with Turing.jl), I have updated the https://github.com/mcreel/SimulatedNeuralMoments.jl package to write the likelihood using the Turing.jl PPL form. Sam…

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## [Boruta algorithm](https://discourse.julialang.org/t/boruta-algorithm/76821)

<div class="topic-metadata">

**Author:** [@Jaidy](https://discourse.julialang.org/u/Jaidy)\
**Replies:** 4\
**Last updated:** [February 21, 2022, 11:46am UTC](https://discourse.julialang.org/t/boruta-algorithm/76821 "2022-02-21T11:46:00Z")

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Hi everyone, I am looking to use Boruta algorithm to select features for my project. First I looked up for a Julia implementation of Baruta algorithm, but could not find any. Then I found Python implementation and tried…

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