# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?page=201

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**Page:** 202

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## [Type instability with CuVector inside struct](https://discourse.julialang.org/t/type-instability-with-cuvector-inside-struct/97476)

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**Author:** [@bjarthur](https://discourse.julialang.org/u/bjarthur)\
**Replies:** 2\
**Last updated:** [April 14, 2023, 5:45pm UTC](https://discourse.julialang.org/t/type-instability-with-cuvector-inside-struct/97476 "2023-04-14T17:45:38Z")

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this is a very simple problem, so i fear i’m making a dumb mistake. apologies if so. but i can’t figure out why the function foo below is type unstable when input with a struct that has a CuVector in it, whereas if it’…

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## [Ratio between the plot and the figure - white area around](https://discourse.julialang.org/t/ratio-between-the-plot-and-the-figure-white-area-around/97406)

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**Author:** [@gnicolosi](https://discourse.julialang.org/u/gnicolosi)\
**Replies:** 4\
**Last updated:** [April 14, 2023, 4:32pm UTC](https://discourse.julialang.org/t/ratio-between-the-plot-and-the-figure-white-area-around/97406 "2023-04-14T16:32:44Z")

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I am having trouble removing this white area around my plot: I have tried aspect\_ratio and size options but couldn’t change. It happens both in VSCode and Jupyter notebook. It doesn’t happen in my laptop though. Any g…

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## [How to use DifferentialEquations.jl to do a Monte Carlo](https://discourse.julialang.org/t/how-to-use-differentialequations-jl-to-do-a-monte-carlo/97450)

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**Author:** [@marcofrancis](https://discourse.julialang.org/u/marcofrancis)\
**Replies:** 1\
**Last updated:** [April 14, 2023, 10:51am UTC](https://discourse.julialang.org/t/how-to-use-differentialequations-jl-to-do-a-monte-carlo/97450 "2023-04-14T10:51:07Z")

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Hi, I managed to simulate (with EnsembleProblem ) 1000 paths of a 2-dimensional SDE. Let’s call the one dimensional components x(t) and y(t). I have some problems handling the solution to the problem: the paths are of d…

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## [Large ManifoldProjection causing memory issues in DifferentialEquations.jl](https://discourse.julialang.org/t/large-manifoldprojection-causing-memory-issues-in-differentialequations-jl/97420)

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**Author:** [@chrishalcrow](https://discourse.julialang.org/u/chrishalcrow)\
**Replies:** 2\
**Last updated:** [April 14, 2023, 7:56am UTC](https://discourse.julialang.org/t/large-manifoldprojection-causing-memory-issues-in-differentialequations-jl/97420 "2023-04-14T07:56:05Z")

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Hello, I’m solving a PDE in three spatial dimension where the field takes values in S^3. A convenient way to work with this is to define a four-vector u and project it onto the sphere at each point. So I have u\_i(x,y,z)…

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## [Interesting paper from Oak Ridge: Evaluating performance and portability of high-level programming models:](https://discourse.julialang.org/t/interesting-paper-from-oak-ridge-evaluating-performance-and-portability-of-high-level-programming-models/97451)

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**Author:** [@Perrin\_Meyer](https://discourse.julialang.org/u/Perrin_Meyer)\
**Replies:** 1\
**Last updated:** [April 13, 2023, 9:43pm UTC](https://discourse.julialang.org/t/interesting-paper-from-oak-ridge-evaluating-performance-and-portability-of-high-level-programming-models/97451 "2023-04-13T21:43:18Z")

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I noticed this interesting paper from Oak Ridge browsing arXiv: Evaluating performance and portability of high-level programming models: Julia, Python/Numba, and Kokkos on exascale nodes

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## [Are there any pertained models to generated image, text,video and audio embeddings in Julia ? If yes where can I find /download them to use?](https://discourse.julialang.org/t/are-there-any-pertained-models-to-generated-image-text-video-and-audio-embeddings-in-julia-if-yes-where-can-i-find-download-them-to-use/97408)

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**Author:** [@5hv5hvnk](https://discourse.julialang.org/u/5hv5hvnk)\
**Replies:** 2\
**Last updated:** [April 13, 2023, 9:04pm UTC](https://discourse.julialang.org/t/are-there-any-pertained-models-to-generated-image-text-video-and-audio-embeddings-in-julia-if-yes-where-can-i-find-download-them-to-use/97408 "2023-04-13T21:04:58Z")

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I want to find embedding of different type of datafiles and save them. Since I am quite new to Julia I am not being able to find appropriate models that does these tasks. Thank you

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## [How to make Zygote's gradient function work with a custom rrule](https://discourse.julialang.org/t/how-to-make-zygotes-gradient-function-work-with-a-custom-rrule/97439)

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**Author:** [@gladisor](https://discourse.julialang.org/u/gladisor)\
**Replies:** 0\
**Last updated:** [April 13, 2023, 6:16pm UTC](https://discourse.julialang.org/t/how-to-make-zygotes-gradient-function-work-with-a-custom-rrule/97439 "2023-04-13T18:16:35Z")

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Here is a link to my issue which describes the problem I am facing:

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## [Posterior prediction in Turing](https://discourse.julialang.org/t/posterior-prediction-in-turing/97355)

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**Author:** [@jfhawkin](https://discourse.julialang.org/u/jfhawkin)\
**Replies:** 4\
**Last updated:** [April 13, 2023, 6:10pm UTC](https://discourse.julialang.org/t/posterior-prediction-in-turing/97355 "2023-04-13T18:10:09Z")

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I’m looking to replicate the below code snippet from a Stan example. I’m having a hard time figuring out the syntax to replicate the Turing predict() example for my logistic regression model and translating the Stan code…

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## [\[Help\] Nested ForwardDiff.jacobian of an Integrals.IntegralProblem](https://discourse.julialang.org/t/help-nested-forwarddiff-jacobian-of-an-integrals-integralproblem/97430)

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**Author:** [@aafsar](https://discourse.julialang.org/u/aafsar)\
**Replies:** 2\
**Last updated:** [April 13, 2023, 5:36pm UTC](https://discourse.julialang.org/t/help-nested-forwarddiff-jacobian-of-an-integrals-integralproblem/97430 "2023-04-13T17:36:03Z")

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I have an integration problem (actually vector-valued, but problem here applies to scalar-valued ones as well) as a part of my model which it might be helpful to calculate its Hessian. I follow the documentation of Integ…

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## [Make a Legend with width equal to an axis](https://discourse.julialang.org/t/make-a-legend-with-width-equal-to-an-axis/97317)

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**Author:** [@Datseris](https://discourse.julialang.org/u/Datseris)\
**Replies:** 11\
**Last updated:** [April 13, 2023, 5:29pm UTC](https://discourse.julialang.org/t/make-a-legend-with-width-equal-to-an-axis/97317 "2023-04-13T17:29:26Z")

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Hi, I am trying to recreate the following PyPlot image with Makie: I know how to make everything in the figure except one thing: how to make the legend width to be exactly the same as the axis below it. Any help woul…

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## [Replacing missing values in DataFrames.jl with function requiring multiple inputs](https://discourse.julialang.org/t/replacing-missing-values-in-dataframes-jl-with-function-requiring-multiple-inputs/97323)

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**Author:** [@dleather](https://discourse.julialang.org/u/dleather)\
**Replies:** 2\
**Last updated:** [April 13, 2023, 11:04am UTC](https://discourse.julialang.org/t/replacing-missing-values-in-dataframes-jl-with-function-requiring-multiple-inputs/97323 "2023-04-13T11:04:07Z")

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The code below should create a new column in a DataFrame, new\_MaxAllwFAR = \[15.0, 15.0, 15.0, 15.0\]. Instead it creates, new\_MaxAllwFAR = \[15.0, 15.0, missing, missing\]. Can you help me understand why? And how should…

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## [Difference equation with neural network](https://discourse.julialang.org/t/difference-equation-with-neural-network/97403)

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**Author:** [@quantiota](https://discourse.julialang.org/u/quantiota)\
**Replies:** 0\
**Last updated:** [April 12, 2023, 7:07pm UTC](https://discourse.julialang.org/t/difference-equation-with-neural-network/97403 "2023-04-12T19:07:30Z")

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Someone can give me a research direction to find the time series w\[i\] so that the loss function sum(F.^2) is minimized for a known time series q. # define a function to calculate the values of F for a given time serie…

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## [How is the performance of GraphNeuralNetworks.jl compared to PytorchGeometric?](https://discourse.julialang.org/t/how-is-the-performance-of-graphneuralnetworks-jl-compared-to-pytorchgeometric/97396)

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**Author:** [@DoktorMike](https://discourse.julialang.org/u/DoktorMike)\
**Replies:** 4\
**Last updated:** [April 13, 2023, 11:30am UTC](https://discourse.julialang.org/t/how-is-the-performance-of-graphneuralnetworks-jl-compared-to-pytorchgeometric/97396 "2023-04-13T11:30:45Z")

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I’ve been playing around with the excellent GraphNeuralNetworks.jl and am thinking about applying it to the biochemistry domain. Specifically within drug discovery. I was wondering if anyone has tried to benchmark speed …

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## [CUTENSOR not available](https://discourse.julialang.org/t/cutensor-not-available/97341)

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**Author:** [@lello](https://discourse.julialang.org/u/lello)\
**Replies:** 7\
**Last updated:** [April 13, 2023, 9:36am UTC](https://discourse.julialang.org/t/cutensor-not-available/97341 "2023-04-13T09:36:02Z")

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Hi All, I am trying to install CUDA with CUTENSOR support on a Debian 11+julia 1.8.5, but witout success. The main problem is that CUTENSOR is non supported at moment for the new CUDA 12.1 drivers. This is the error m…

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## [\[Plots.jl\] Can't show data on hover (surface plot)](https://discourse.julialang.org/t/plots-jl-cant-show-data-on-hover-surface-plot/56397)

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**Author:** [@nandoconde](https://discourse.julialang.org/u/nandoconde)\
**Replies:** 5\
**Last updated:** [April 13, 2023, 8:59am UTC](https://discourse.julialang.org/t/plots-jl-cant-show-data-on-hover-surface-plot/56397 "2023-04-13T08:59:18Z")

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Hello! My problem For my application, I need to be able to obtain data points when hovering over a surface plot. As far as I know: Makie has no backend that supports this feature In Plots, there are two backends that …

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## [Recovering different form from JuMP model](https://discourse.julialang.org/t/recovering-different-form-from-jump-model/97401)

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**Author:** [@shakedregev](https://discourse.julialang.org/u/shakedregev)\
**Replies:** 3\
**Last updated:** [April 12, 2023, 11:33pm UTC](https://discourse.julialang.org/t/recovering-different-form-from-jump-model/97401 "2023-04-12T23:33:31Z")

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If I have a model that I know represents the LP min c'x s.t. Ax\<=b how can I extract (A, b, c) from the model? I know JuMP.\_nlp\_objective\_function will give me the objective function, but I actually need the vector c …

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## [Getting Turing to work with a hierarchical multinomial regression model](https://discourse.julialang.org/t/getting-turing-to-work-with-a-hierarchical-multinomial-regression-model/97386)

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**Author:** [@Matan](https://discourse.julialang.org/u/Matan)\
**Replies:** 2\
**Last updated:** [April 12, 2023, 4:09pm UTC](https://discourse.julialang.org/t/getting-turing-to-work-with-a-hierarchical-multinomial-regression-model/97386 "2023-04-12T16:09:48Z")

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Hi everyone, I’m sorry if this question is too specific. I tried following advice in previous similar threads but couldn’t get anything to work, so figured I should try asking myself. For context, I’m modeling 5000 Han…

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## [Makie theming axis on specific plot recipes](https://discourse.julialang.org/t/makie-theming-axis-on-specific-plot-recipes/97395)

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**Author:** [@kunzaatko](https://discourse.julialang.org/u/kunzaatko)\
**Replies:** 0\
**Last updated:** [April 12, 2023, 2:38pm UTC](https://discourse.julialang.org/t/makie-theming-axis-on-specific-plot-recipes/97395 "2023-04-12T14:38:20Z")

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Is there a way to theme the Axis in makie for specific recipes differently. My specific use-case is that I would like to reverse the y axis and make the aspect use DataAspect but only for image plots. The ideal way that …

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## [Create array of hexagons, place in index, and search by point](https://discourse.julialang.org/t/create-array-of-hexagons-place-in-index-and-search-by-point/97325)

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**Author:** [@thk686](https://discourse.julialang.org/u/thk686)\
**Replies:** 11\
**Last updated:** [April 12, 2023, 2:31pm UTC](https://discourse.julialang.org/t/create-array-of-hexagons-place-in-index-and-search-by-point/97325 "2023-04-12T14:31:11Z")

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I’ve been looking at JuliaGeo to how I might do the following: 1) create a tiled array of hexagons, 2) put them in a spatial index, and 3) be able to find which hexagon intersects a point. I have written this code in Boo…

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## [MTK & missing parameters, MWE](https://discourse.julialang.org/t/mtk-missing-parameters-mwe/96945)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 3\
**Last updated:** [April 12, 2023, 11:22am UTC](https://discourse.julialang.org/t/mtk-missing-parameters-mwe/96945 "2023-04-12T11:22:39Z")

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OK – I’m trying again – with a MWE. Consider this an observation (I’m not saying this should be changed in MTK). This post is more meant as a request for advice on best practice. Consider the DAE \\frac{dx}{dt} = -b\\cd…

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## [Turn off interactivity/responsiveness in plotly/plotlyjs backend](https://discourse.julialang.org/t/turn-off-interactivity-responsiveness-in-plotly-plotlyjs-backend/97225)

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**Author:** [@iabraham](https://discourse.julialang.org/u/iabraham)\
**Replies:** 2\
**Last updated:** [April 12, 2023, 8:18am UTC](https://discourse.julialang.org/t/turn-off-interactivity-responsiveness-in-plotly-plotlyjs-backend/97225 "2023-04-12T08:18:12Z")

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What is the keyword to turn off the interactivity or responsiveness in the plotly backend for the Plots backend in Julia? For reference, I am using Pluto and while the interactivity is great, I am doing some very dense …

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## [Questions about using CUDA.jl for GPU concurrent programming: Computational results cannot be obtained when overlapping GPU and CPU operations](https://discourse.julialang.org/t/questions-about-using-cuda-jl-for-gpu-concurrent-programming-computational-results-cannot-be-obtained-when-overlapping-gpu-and-cpu-operations/97297)

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**Author:** [@fred\_wu](https://discourse.julialang.org/u/fred_wu)\
**Replies:** 2\
**Last updated:** [April 12, 2023, 7:21am UTC](https://discourse.julialang.org/t/questions-about-using-cuda-jl-for-gpu-concurrent-programming-computational-results-cannot-be-obtained-when-overlapping-gpu-and-cpu-operations/97297 "2023-04-12T07:21:45Z")

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Hi， I’m new to julia parallel programming.I want to make the idle CPU work together when the GPU is doing calculations, so I wrote the following code. However, what confuses me is that I can’t get the calculation result…

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## [TensorKit efficiency](https://discourse.julialang.org/t/tensorkit-efficiency/59559)

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**Author:** [@Nellatur](https://discourse.julialang.org/u/Nellatur)\
**Replies:** 11\
**Last updated:** [April 12, 2023, 5:40am UTC](https://discourse.julialang.org/t/tensorkit-efficiency/59559 "2023-04-12T05:40:20Z")

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I tried to run a contraction A\[a,b\]\*B\[b,c,d\] = C\[a,c,d\], assume repeated index b as summation using TensorKit. By the following code, it seems TensorKit is even slower than nested loops. Does TensorKit use BLAS? or is…

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## [Combine mp4 videos](https://discourse.julialang.org/t/combine-mp4-videos/97368)

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**Author:** [@chadagreene](https://discourse.julialang.org/u/chadagreene)\
**Replies:** 1\
**Last updated:** [April 11, 2023, 10:36pm UTC](https://discourse.julialang.org/t/combine-mp4-videos/97368 "2023-04-11T22:36:06Z")

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I have about 500 animations in mp4 format, each about 600 frames and 40 seconds long. The files are named something like: video\_001.mp4 video\_002.mp4 ⋮ video\_500.mp4 All of the videos have the same dimensions and frame…

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## [Memory allocation with Julia 1.8.5 release](https://discourse.julialang.org/t/memory-allocation-with-julia-1-8-5-release/97362)

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**Author:** [@Mikel\_Antonana](https://discourse.julialang.org/u/Mikel_Antonana)\
**Replies:** 0\
**Last updated:** [April 11, 2023, 7:22pm UTC](https://discourse.julialang.org/t/memory-allocation-with-julia-1-8-5-release/97362 "2023-04-11T19:22:17Z")

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In a new implementation of an ODE solver, we have a problem with memory allocations with Julia version 1.8.5: 1- With version 1.6.6, the memory allocations are correct, that is, they are constant and independent of the …

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## [Is it possible to keep some weights fixed during training](https://discourse.julialang.org/t/is-it-possible-to-keep-some-weights-fixed-during-training/91752)

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**Author:** [@quantiota](https://discourse.julialang.org/u/quantiota)\
**Replies:** 4\
**Last updated:** [April 11, 2023, 5:53pm UTC](https://discourse.julialang.org/t/is-it-possible-to-keep-some-weights-fixed-during-training/91752 "2023-04-11T17:53:56Z")

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the weights of the first layer are real parameters and i need to fix the values to zero for the rising arrows.

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## [Convert binary mask to shapefile](https://discourse.julialang.org/t/convert-binary-mask-to-shapefile/97322)

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**Author:** [@chadagreene](https://discourse.julialang.org/u/chadagreene)\
**Replies:** 4\
**Last updated:** [April 11, 2023, 3:57pm UTC](https://discourse.julialang.org/t/convert-binary-mask-to-shapefile/97322 "2023-04-11T15:57:11Z")

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I have a large (20,000 x 25,000) binary mask that defines the shape of an island. What’s the best way to convert the mask into a polygon and and save it as a shapefile?

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## [\[AlgebraOfGraphics.jl\] adding jitter to a scatter plot points](https://discourse.julialang.org/t/algebraofgraphics-jl-adding-jitter-to-a-scatter-plot-points/97310)

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**Author:** [@rud-lucien](https://discourse.julialang.org/u/rud-lucien)\
**Replies:** 7\
**Last updated:** [April 11, 2023, 3:20pm UTC](https://discourse.julialang.org/t/algebraofgraphics-jl-adding-jitter-to-a-scatter-plot-points/97310 "2023-04-11T15:20:47Z")

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Hi, I was wondering if anyone knows how (or if it is currently possible) to add jitter to the position of the points in this scatter plot generated with AlgebarOFGraphics.jl? using CairoMakie, AlgebraOfGraphics, DataFr…

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## [Stockwell and inverse in Julia](https://discourse.julialang.org/t/stockwell-and-inverse-in-julia/97343)

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**Author:** [@marianoarnaiz](https://discourse.julialang.org/u/marianoarnaiz)\
**Replies:** 1\
**Last updated:** [April 11, 2023, 12:14pm UTC](https://discourse.julialang.org/t/stockwell-and-inverse-in-julia/97343 "2023-04-11T12:14:53Z")

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Hi all. Anyone has a code to do forward and inverse stockwell transform? Kind regards, M

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## [Problem combining Unitful and MonteCarloMeasurements](https://discourse.julialang.org/t/problem-combining-unitful-and-montecarlomeasurements/35418)

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**Author:** [@klaff](https://discourse.julialang.org/u/klaff)\
**Replies:** 12\
**Last updated:** [April 11, 2023, 10:32am UTC](https://discourse.julialang.org/t/problem-combining-unitful-and-montecarlomeasurements/35418 "2023-04-11T10:32:39Z")

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Consider the functions f1 and f2: using MonteCarloMeasurements using Unitful function f1(Vi) if Vi ≤ 0.0 return 0.0 elseif Vi ≥ 1.0 return 1.0 else Vi end end function f2(Vi) …

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