# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=202

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**Page:** 203

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## [Can I change the latex font using LatexString package?](https://discourse.julialang.org/t/can-i-change-the-latex-font-using-latexstring-package/97113)

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**Author:** [@quantum](https://discourse.julialang.org/u/quantum)\
**Replies:** 1\
**Last updated:** [April 5, 2023, 3:09pm UTC](https://discourse.julialang.org/t/can-i-change-the-latex-font-using-latexstring-package/97113 "2023-04-05T15:09:55Z")

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My computer is Mac OX m1. I use the package LatexSting to render the latex. This is the code and output figure. I was wondering if I can change the font of latex. However, I don’t want to change the font of text because…

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## [Convert GADM.jl country file to GeoJSON.jl](https://discourse.julialang.org/t/convert-gadm-jl-country-file-to-geojson-jl/82654)

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**Author:** [@alasaadstat](https://discourse.julialang.org/u/alasaadstat)\
**Replies:** 8\
**Last updated:** [April 5, 2023, 2:22pm UTC](https://discourse.julialang.org/t/convert-gadm-jl-country-file-to-geojson-jl/82654 "2023-04-05T14:22:55Z")

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Hi, I would like to convert the loaded GADM.jl country polygon file to GeoJSON.jl so that I can plot this using GeoMakie.jl. I am aware that MeshViz.jl supports well the GADM.jl, but I would like to customize the plot an…

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## [How to do multiply updates with Observables.jl?](https://discourse.julialang.org/t/how-to-do-multiply-updates-with-observables-jl/96936)

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**Author:** [@pzabka](https://discourse.julialang.org/u/pzabka)\
**Replies:** 2\
**Last updated:** [April 5, 2023, 7:55am UTC](https://discourse.julialang.org/t/how-to-do-multiply-updates-with-observables-jl/96936 "2023-04-05T07:55:59Z")

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In version 0.4 of Observables.jl, it was possible to fire several events on an update using channels. However, it disappeared from version 0.5. Is there any way how to do it now? It would be useful for making a video pla…

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## [Reducing model building time](https://discourse.julialang.org/t/reducing-model-building-time/97069)

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**Author:** [@math\_opt](https://discourse.julialang.org/u/math_opt)\
**Replies:** 8\
**Last updated:** [April 5, 2023, 3:09am UTC](https://discourse.julialang.org/t/reducing-model-building-time/97069 "2023-04-05T03:09:51Z")

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Is there a difference in the time taken to build the JuMP model if I use for loops for defining variables/constraints. For example: using JuMP model = Model() @variable(model, x\[i in 1:7, j in 1:10\] \>= 0) @constraint(…

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## [NeuralPDE for starting a geophysics repository](https://discourse.julialang.org/t/neuralpde-for-starting-a-geophysics-repository/97047)

<div class="topic-metadata">

**Author:** [@pkmishra](https://discourse.julialang.org/u/pkmishra)\
**Replies:** 4\
**Last updated:** [April 4, 2023, 10:59pm UTC](https://discourse.julialang.org/t/neuralpde-for-starting-a-geophysics-repository/97047 "2023-04-04T22:59:28Z")

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Hi @ChrisRackauckas, I am writing a research proposal for creating an integrated optimization framework for multi-source geophysical data. The goal is to start something sustainable for long-term. I would like everything…

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## [Gradient-Free Neural Network Optimization](https://discourse.julialang.org/t/gradient-free-neural-network-optimization/97088)

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**Author:** [@liamfdoherty](https://discourse.julialang.org/u/liamfdoherty)\
**Replies:** 3\
**Last updated:** [April 4, 2023, 10:58pm UTC](https://discourse.julialang.org/t/gradient-free-neural-network-optimization/97088 "2023-04-04T22:58:33Z")

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I have a neural network which is real valued (i.e., maps into \\mathbb{R}, with inputs in \\mathbb{R}^{n}), but it has complex weights. Consequently, taking gradients of the loss function is complex differentiation, and th…

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## [GDAL - Write KMZ file with transparency](https://discourse.julialang.org/t/gdal-write-kmz-file-with-transparency/97087)

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**Author:** [@stefanomoro](https://discourse.julialang.org/u/stefanomoro)\
**Replies:** 1\
**Last updated:** [April 4, 2023, 9:54pm UTC](https://discourse.julialang.org/t/gdal-write-kmz-file-with-transparency/97087 "2023-04-04T21:54:30Z")

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I’m trying to save a .kmz file from a dataset representing a DEM of an area stored in a GeoTiff file. My code is reading the DEM, transforming the CRS to UTM, and defining a subset based on coordinates. On this subset I…

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## [UndefVarError: libcuda\_original\_version not defined](https://discourse.julialang.org/t/undefvarerror-libcuda-original-version-not-defined/97049)

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**Author:** [@stephans3](https://discourse.julialang.org/u/stephans3)\
**Replies:** 1\
**Last updated:** [April 4, 2023, 12:33pm UTC](https://discourse.julialang.org/t/undefvarerror-libcuda-original-version-not-defined/97049 "2023-04-04T12:33:37Z")

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Hi all, on a student’s laptop (with Nvidia P620, Windows 10) we installed CUDA.jl and faced the following error message. julia\> CUDA.versioninfo() CUDA runtime 12.1, artifact installation CUDA driver 12.1 NVIDIA driver…

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## [In GaussianProcess.jl it is throwing error if I choose \`MeanConst()\`](https://discourse.julialang.org/t/in-gaussianprocess-jl-it-is-throwing-error-if-i-choose-meanconst/97008)

<div class="topic-metadata">

**Author:** [@Sourish](https://discourse.julialang.org/u/Sourish)\
**Replies:** 9\
**Last updated:** [April 4, 2023, 12:08pm UTC](https://discourse.julialang.org/t/in-gaussianprocess-jl-it-is-throwing-error-if-i-choose-meanconst/97008 "2023-04-04T12:08:15Z")

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Hi In the following code, I am trying to implement a constant mean function from GaussianProcesses.jl. But it is throwing an error stating no method matching MeanConst() using GaussianProcesses n = 100; x = 2π \* rand(n…

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## [Complete and incomplete sparse cholesky factorization](https://discourse.julialang.org/t/complete-and-incomplete-sparse-cholesky-factorization/96918)

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**Author:** [@shakedregev](https://discourse.julialang.org/u/shakedregev)\
**Replies:** 6\
**Last updated:** [April 4, 2023, 7:28am UTC](https://discourse.julialang.org/t/complete-and-incomplete-sparse-cholesky-factorization/96918 "2023-04-04T07:28:23Z")

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Say I have a CuSparseCSR matrix “A” and I want to take complete and incomplete cholesky factorizations of it, but crucially leave that factorization on the GPU, how can I do that? Things I’ve tried: CuSparse.jl - depr…

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## [Turing.jl: unlikely posterior with bayesian differential equation?](https://discourse.julialang.org/t/turing-jl-unlikely-posterior-with-bayesian-differential-equation/92269)

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**Author:** [@Janssena](https://discourse.julialang.org/u/Janssena)\
**Replies:** 9\
**Last updated:** [April 4, 2023, 6:46am UTC](https://discourse.julialang.org/t/turing-jl-unlikely-posterior-with-bayesian-differential-equation/92269 "2023-04-04T06:46:44Z")

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Hey All, I am trying to approximate the posterior distribution of a random variable inside of a differential equation with a stochastic outcome. I am able to sample from the posterior distribution, I am however unsure i…

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## [JuMP/CPLEX: confusion with number of cuts added in callback](https://discourse.julialang.org/t/jump-cplex-confusion-with-number-of-cuts-added-in-callback/56033)

<div class="topic-metadata">

**Author:** [@mike\_k](https://discourse.julialang.org/u/mike_k)\
**Replies:** 6\
**Last updated:** [April 4, 2023, 12:44am UTC](https://discourse.julialang.org/t/jump-cplex-confusion-with-number-of-cuts-added-in-callback/56033 "2023-04-04T00:44:32Z")

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Dear folks, I use JuMP (v0.21.4) and CPLEX (v0.7.3) to solve a MILP with lazy and user cuts added in a generic callback. However, I am confused with the output. To obtain the number of cuts after solving, I wrote the fu…

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## [Polar plot with 0° at the nadir?](https://discourse.julialang.org/t/polar-plot-with-0-at-the-nadir/92119)

<div class="topic-metadata">

**Author:** [@rmfritz](https://discourse.julialang.org/u/rmfritz)\
**Replies:** 11\
**Last updated:** [April 3, 2023, 5:54pm UTC](https://discourse.julialang.org/t/polar-plot-with-0-at-the-nadir/92119 "2023-04-03T17:54:59Z")

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Is there any simple way to do this? The default is 0° on the right.

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## [Graph.jl error in a\_star() function](https://discourse.julialang.org/t/graph-jl-error-in-a-star-function/96455)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 15\
**Last updated:** [April 3, 2023, 4:47pm UTC](https://discourse.julialang.org/t/graph-jl-error-in-a-star-function/96455 "2023-04-03T16:47:04Z")

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I want to get shortest distance between two edges. using Graphs,GraphRecipes ,Plots,Karnak,NetworkLayout,Colors,SimpleWeightedGraphs begin G=SimpleWeightedGraph(5) add\_edge!(G, 1, 2,2000) add\_edge!(G, 1, 3,180…

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## [Calculation of two-time correlation function and spectrum in quantumoptics.jl](https://discourse.julialang.org/t/calculation-of-two-time-correlation-function-and-spectrum-in-quantumoptics-jl/97009)

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**Author:** [@arpan\_chatterjee](https://discourse.julialang.org/u/arpan_chatterjee)\
**Replies:** 0\
**Last updated:** [April 3, 2023, 10:52am UTC](https://discourse.julialang.org/t/calculation-of-two-time-correlation-function-and-spectrum-in-quantumoptics-jl/97009 "2023-04-03T10:52:26Z")

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If I have some time-dependent Hamiltonian whose frequency is time dependent not amplitude as described in the example of the documentation in quantumoptics.jl. Then How can I construct two-time correlation function for s…

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## [Job shop scheduling](https://discourse.julialang.org/t/job-shop-scheduling/96938)

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**Author:** [@baprata](https://discourse.julialang.org/u/baprata)\
**Replies:** 4\
**Last updated:** [April 3, 2023, 12:52pm UTC](https://discourse.julialang.org/t/job-shop-scheduling/96938 "2023-04-03T12:52:40Z")

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I am studying the mixed-integer linear programming formulation for the job shop with makespan minimization proposed by Manne (see Equations (1)-(7) from Ku and Beck (2016) http://dx.doi.org/10.1016/j.cor.2016.04.006, and…

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## [Which JuMP supported solvers work well on Apple M2?](https://discourse.julialang.org/t/which-jump-supported-solvers-work-well-on-apple-m2/96992)

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**Author:** [@nlaws](https://discourse.julialang.org/u/nlaws)\
**Replies:** 3\
**Last updated:** [April 3, 2023, 3:03am UTC](https://discourse.julialang.org/t/which-jump-supported-solvers-work-well-on-apple-m2/96992 "2023-04-03T03:03:29Z")

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Looking at a new laptop RN and found this interesting discussion regarding Operations Research on M1: There is also this discussion on this discourse regarding CPLEX.jl on M2: However, the first discussion was last u…

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## [Adjusting padding between axis and axisticklabel in gridded layout](https://discourse.julialang.org/t/adjusting-padding-between-axis-and-axisticklabel-in-gridded-layout/96950)

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**Author:** [@iabraham](https://discourse.julialang.org/u/iabraham)\
**Replies:** 3\
**Last updated:** [April 2, 2023, 7:45pm UTC](https://discourse.julialang.org/t/adjusting-padding-between-axis-and-axisticklabel-in-gridded-layout/96950 "2023-04-02T19:45:00Z")

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This question is about being able to adjust the space between ticklabels and their corresponding axis lines in the default GR backed for Plots.jl. Consider: using Plots, Plots.Measures minx, miny, N = 300, 300, 16 Plo…

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## [Combine output of several functions on the same interactive plot](https://discourse.julialang.org/t/combine-output-of-several-functions-on-the-same-interactive-plot/96972)

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**Author:** [@ittomsk](https://discourse.julialang.org/u/ittomsk)\
**Replies:** 0\
**Last updated:** [April 2, 2023, 3:35pm UTC](https://discourse.julialang.org/t/combine-output-of-several-functions-on-the-same-interactive-plot/96972 "2023-04-02T15:35:27Z")

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I need to add some lines on top of the agent’s polygon to represent its properties. However, I am currently stuck at grouping the output of two functions in the following line: Group(\[agent\_poly, agent\_orientation\]) . c…

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## [Why is ModelingToolkit simplifying this way?](https://discourse.julialang.org/t/why-is-modelingtoolkit-simplifying-this-way/96872)

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**Author:** [@jonniedie](https://discourse.julialang.org/u/jonniedie)\
**Replies:** 5\
**Last updated:** [April 2, 2023, 11:16am UTC](https://discourse.julialang.org/t/why-is-modelingtoolkit-simplifying-this-way/96872 "2023-04-02T11:16:54Z")

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I created a pretty simple composed system: using OrdinaryDiffEq, ModelingToolkit, Plots @parameters t d\_dt = Differential(t) function Cart(; init\_pos, init\_vel, mass, name=:cart) @variables pos(t)=init\_pos vel(t)=ini…

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## [Higher accuracy in numerical cumulative integration](https://discourse.julialang.org/t/higher-accuracy-in-numerical-cumulative-integration/96898)

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**Author:** [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Replies:** 15\
**Last updated:** [April 1, 2023, 7:35pm UTC](https://discourse.julialang.org/t/higher-accuracy-in-numerical-cumulative-integration/96898 "2023-04-01T19:35:42Z")

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There are some threads about numerical cumulative integration like this and this. However, I have a more basic question. I am interested in performing the integral S(x; a) = \\int\_a^x f(x') dx' where x \\le b. Note that f…

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## [Package for fast OLS using StaticArrays](https://discourse.julialang.org/t/package-for-fast-ols-using-staticarrays/96943)

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**Author:** [@colintbowers](https://discourse.julialang.org/u/colintbowers)\
**Replies:** 0\
**Last updated:** [April 1, 2023, 11:20am UTC](https://discourse.julialang.org/t/package-for-fast-ols-using-staticarrays/96943 "2023-04-01T11:20:39Z")

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Hi all, I was just wondering if there is a package commonly used for performing OLS when the number of explanatory variables is known (and small), that leverages the benefits of StaticArrays.jl? For example: using Sta…

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## [What is the current status of julia to wasm compilation?](https://discourse.julialang.org/t/what-is-the-current-status-of-julia-to-wasm-compilation/96922)

<div class="topic-metadata">

**Author:** [@1m1](https://discourse.julialang.org/u/1m1)\
**Replies:** 1\
**Last updated:** [April 1, 2023, 6:38am UTC](https://discourse.julialang.org/t/what-is-the-current-status-of-julia-to-wasm-compilation/96922 "2023-04-01T06:38:16Z")

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i have only found projects that have not had commits for over a year. is this because it works, julia can be compiled to wasm? or does it not work and it is neither a focus? ty

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## [Cannot set an array of constraints @constraint, getting an error](https://discourse.julialang.org/t/cannot-set-an-array-of-constraints-constraint-getting-an-error/96901)

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**Author:** [@Gregoryo](https://discourse.julialang.org/u/Gregoryo)\
**Replies:** 2\
**Last updated:** [April 1, 2023, 5:15am UTC](https://discourse.julialang.org/t/cannot-set-an-array-of-constraints-constraint-getting-an-error/96901 "2023-04-01T05:15:27Z")

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Hi, I want to create a constraint in my model where I have np particles with a mass m at position x,y as variables. I want to set the constraint that the mass of particles is \>0 and I wrote the code below but I get an er…

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## [Iterating through JuMP variables](https://discourse.julialang.org/t/iterating-through-jump-variables/96816)

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**Author:** [@math\_opt](https://discourse.julialang.org/u/math_opt)\
**Replies:** 5\
**Last updated:** [March 31, 2023, 8:33pm UTC](https://discourse.julialang.org/t/iterating-through-jump-variables/96816 "2023-03-31T20:33:01Z")

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I am doing some trivial checks on the variable values output by my optimization model, and I was wondering what is the correct way to iterate through a JuMP variable. For example, if my model has a variable x\[2:9, 10:15\],…

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## [ParallelStencil + ImplicitGlobalGrid with multiple GPUs](https://discourse.julialang.org/t/parallelstencil-implicitglobalgrid-with-multiple-gpus/96585)

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**Author:** [@Teerthal](https://discourse.julialang.org/u/Teerthal)\
**Replies:** 8\
**Last updated:** [March 31, 2023, 7:39pm UTC](https://discourse.julialang.org/t/parallelstencil-implicitglobalgrid-with-multiple-gpus/96585 "2023-03-31T19:39:24Z")

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Hello, I am currently starting out with GPU programming and working out a multiple GPU implementation of my Electroweak field theory simulation code. I have followed the examples on the ParallelStencil git for multi-GP…

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## [Indexing in GPU kernel](https://discourse.julialang.org/t/indexing-in-gpu-kernel/96902)

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**Author:** [@shakedregev](https://discourse.julialang.org/u/shakedregev)\
**Replies:** 2\
**Last updated:** [March 31, 2023, 7:07pm UTC](https://discourse.julialang.org/t/indexing-in-gpu-kernel/96902 "2023-03-31T19:07:11Z")

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I’m building a custom GPU kernel and am having trouble indexing into a GPU vector. Q is a matrix stored in CSR format qrows - row pointers qcols - nonzero column indices qvals - nonzero values Here is a code snippet: …

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## [Approximate inverse of a definite integral](https://discourse.julialang.org/t/approximate-inverse-of-a-definite-integral/83181)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 8\
**Last updated:** [March 31, 2023, 3:09pm UTC](https://discourse.julialang.org/t/approximate-inverse-of-a-definite-integral/83181 "2023-03-31T15:09:41Z")

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For a given (fixed) function f: \[0,1\] \\to \[0, \\infty), let g(x) = \\int\_0^x f(x) dx and h(x) = \\frac{g(x)}{g(1)} h is then, by construction, \[0,1\] \\to \[0,1\]. I need a fast approximation of its inverse: I am OK with …

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## [Nested Sum in NLObjective -](https://discourse.julialang.org/t/nested-sum-in-nlobjective/96890)

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**Author:** [@Gregoryo](https://discourse.julialang.org/u/Gregoryo)\
**Replies:** 2\
**Last updated:** [March 31, 2023, 3:06pm UTC](https://discourse.julialang.org/t/nested-sum-in-nlobjective/96890 "2023-03-31T15:06:00Z")

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Hi, I am totally new to both Julia and Optimization and I am trying to define a non linear objective that requires nested sums. I found some examples that I am trying to replicate, but I get an error. This is how I set m…

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## [MTK -- removing parameters from model?](https://discourse.julialang.org/t/mtk-removing-parameters-from-model/96887)

<div class="topic-metadata">

**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 2\
**Last updated:** [March 31, 2023, 2:56pm UTC](https://discourse.julialang.org/t/mtk-removing-parameters-from-model/96887 "2023-03-31T14:56:44Z")

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My MTK implementation of a DAE for doing Monte Carlo study of parameter uncertainty doesn’t work. I think it has to do with how MTK removes parameters that do not show up explicitly in the model equations. Here is some …

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