# Specific Domains

**URL:** https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=285

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

**Page:** 286

---

## [@register multidimensional interpolation in ModelingToolkit](https://discourse.julialang.org/t/register-multidimensional-interpolation-in-modelingtoolkit/80136)

<div class="topic-metadata">

**Author:** [@KyemyungPark](https://discourse.julialang.org/u/KyemyungPark)\
**Replies:** 2\
**Last updated:** [April 28, 2022, 12:08am UTC](https://discourse.julialang.org/t/register-multidimensional-interpolation-in-modelingtoolkit/80136 "2022-04-28T00:08:55Z")

</div>

Hello, I am trying to feed multidimensional interpolating functions into initial conditions to solve a system of multidimensional PDEs using NeuralPDE.jl. However, registering those functions as symbolic functions with @…

---

## [Plot only real part of solution](https://discourse.julialang.org/t/plot-only-real-part-of-solution/80167)

<div class="topic-metadata">

**Author:** [@ograsdijk](https://discourse.julialang.org/u/ograsdijk)\
**Replies:** 3\
**Last updated:** [April 27, 2022, 8:58pm UTC](https://discourse.julialang.org/t/plot-only-real-part-of-solution/80167 "2022-04-27T20:58:08Z")

</div>

I have some ODE systems generated with ModelingToolkit that have complex solutions but I only want to plot the real part of the solution. I know I can pull out the solution for a specific component manually and use real …

---

## [Analysis of complex surveys in Julia?](https://discourse.julialang.org/t/analysis-of-complex-surveys-in-julia/44011)

<div class="topic-metadata">

**Author:** [@jamanrique](https://discourse.julialang.org/u/jamanrique)\
**Replies:** 6\
**Last updated:** [April 27, 2022, 7:49pm UTC](https://discourse.julialang.org/t/analysis-of-complex-surveys-in-julia/44011 "2022-04-27T19:49:42Z")

</div>

Hi! I just wanted to know if someone knows if there’s a package related to the analysis of complex surveys in Julia. If not, this could be a great opportunity for me to learn how to create packages in Julia …

---

## [Introducing Julius: low code and scalable graph computing in Julia](https://discourse.julialang.org/t/introducing-julius-low-code-and-scalable-graph-computing-in-julia/80129)

<div class="topic-metadata">

**Author:** [@Yadong\_Li](https://discourse.julialang.org/u/Yadong_Li)\
**Replies:** 2\
**Last updated:** [April 27, 2022, 5:34pm UTC](https://discourse.julialang.org/t/introducing-julius-low-code-and-scalable-graph-computing-in-julia/80129 "2022-04-27T17:34:59Z")

</div>

We are a group of researchers and engineers passionate about graph computing. At Julius Technologies, we have built a truly innovative graph computing solution that allows developers to build sophisticated, scalable and …

---

## [How can I change the color palette for Plots.jl line\_z and marker\_z attribute color gradients for line and scatter plots?](https://discourse.julialang.org/t/how-can-i-change-the-color-palette-for-plots-jl-line-z-and-marker-z-attribute-color-gradients-for-line-and-scatter-plots/80089)

<div class="topic-metadata">

**Author:** [@thompsonmj](https://discourse.julialang.org/u/thompsonmj)\
**Replies:** 1\
**Last updated:** [April 26, 2022, 7:15pm UTC](https://discourse.julialang.org/t/how-can-i-change-the-color-palette-for-plots-jl-line-z-and-marker-z-attribute-color-gradients-for-line-and-scatter-plots/80089 "2022-04-26T19:15:38Z")

</div>

Plots.jl has z-value attributes available for line and scatter plots. Is there a way to change the palette used for this gradient to a named colorscheme? begin import Plots as Pt t = range(0.0,stop=2π,length=1000) y…

---

## [\[ANN\] TableTransforms.jl](https://discourse.julialang.org/t/ann-tabletransforms-jl/70572)

<div class="topic-metadata">

**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 22\
**Last updated:** [February 11, 2022, 8:43pm UTC](https://discourse.julialang.org/t/ann-tabletransforms-jl/70572 "2022-02-11T20:43:59Z")

</div>

TableTransforms.jl is a new package for transforms and pipelines commonly used in statistics and machine learning. It works with general Tables.jl and has some unique features compared to previous attempts: The packag…

---

## [View and @view in DataFrames](https://discourse.julialang.org/t/view-and-view-in-dataframes/76645)

<div class="topic-metadata">

**Author:** [@alfaromartino](https://discourse.julialang.org/u/alfaromartino)\
**Replies:** 2\
**Last updated:** [February 17, 2022, 9:20pm UTC](https://discourse.julialang.org/t/view-and-view-in-dataframes/76645 "2022-02-17T21:20:59Z")

</div>

I was surprised that view and @view work differently when we work with subsets of the data. The following does not modify the parent dataframe df = DataFrame(a = \[0, 0, 0, 0\], b = \[1, 1, -1, missing\], c = \[1, -1, missi…

---

## [Any package for survey data analysis?](https://discourse.julialang.org/t/any-package-for-survey-data-analysis/67317)

<div class="topic-metadata">

**Author:** [@xinchin](https://discourse.julialang.org/u/xinchin)\
**Replies:** 3\
**Last updated:** [April 27, 2022, 8:55am UTC](https://discourse.julialang.org/t/any-package-for-survey-data-analysis/67317 "2022-04-27T08:55:43Z")

</div>

is there any package for survey data analysis? having functionalities similar to stata would be great

---

## [TimeDataFrames package? (not TimeArray)](https://discourse.julialang.org/t/timedataframes-package-not-timearray/80106)

<div class="topic-metadata">

**Author:** [@Emmanuel-R8](https://discourse.julialang.org/u/Emmanuel-R8)\
**Replies:** 2\
**Last updated:** [April 27, 2022, 8:31am UTC](https://discourse.julialang.org/t/timedataframes-package-not-timearray/80106 "2022-04-27T08:31:19Z")

</div>

I am looking for a package to manipulate general time series. The TimeSeries package is restricted to a TimeArray structure which slaps dates/times on top of an array. All the elements of the array have to be of the sam…

---

## [How to debug failing DifferentialEquations.solve when called with Dual numbers](https://discourse.julialang.org/t/how-to-debug-failing-differentialequations-solve-when-called-with-dual-numbers/79895)

<div class="topic-metadata">

**Author:** [@bgctw](https://discourse.julialang.org/u/bgctw)\
**Replies:** 5\
**Last updated:** [April 27, 2022, 7:47am UTC](https://discourse.julialang.org/t/how-to-debug-failing-differentialequations-solve-when-called-with-dual-numbers/79895 "2022-04-27T07:47:20Z")

</div>

I try to debug why Turing is not moving forward when exploring the posterior sensitivity of parameters and initial states of a ModelingToolkit ODE problem. I reduced the problem to sample no initial conditions and a sing…

---

## [Arrays of complex values with very small imaginary part](https://discourse.julialang.org/t/arrays-of-complex-values-with-very-small-imaginary-part/79621)

<div class="topic-metadata">

**Author:** [@garrek](https://discourse.julialang.org/u/garrek)\
**Replies:** 7\
**Last updated:** [April 27, 2022, 4:46am UTC](https://discourse.julialang.org/t/arrays-of-complex-values-with-very-small-imaginary-part/79621 "2022-04-27T04:46:50Z")

</div>

I am performing calculations with arrays with elements that can be complex (depending on the inputs). Later in my program, I need to check if the eigenvalues of the matrix are complex or real. (real and imaginary compone…

---

## [Flux + GPU memory problems](https://discourse.julialang.org/t/flux-gpu-memory-problems/79783)

<div class="topic-metadata">

**Author:** [@lgmendes](https://discourse.julialang.org/u/lgmendes)\
**Replies:** 2\
**Last updated:** [April 26, 2022, 10:03pm UTC](https://discourse.julialang.org/t/flux-gpu-memory-problems/79783 "2022-04-26T22:03:54Z")

</div>

I was trying to train some models available in the Metalhead (0.7) + Flux (0.13) using an NVIDIA GTX 1080 Ti (11 GB ) using some toy data (512 images size:224x224x3). I was running the code that I show at the end of the …

---

## [Symbolic differentiation of sparse function gives incorrect jacobian](https://discourse.julialang.org/t/symbolic-differentiation-of-sparse-function-gives-incorrect-jacobian/79943)

<div class="topic-metadata">

**Author:** [@Elmo](https://discourse.julialang.org/u/Elmo)\
**Replies:** 3\
**Last updated:** [April 26, 2022, 9:38pm UTC](https://discourse.julialang.org/t/symbolic-differentiation-of-sparse-function-gives-incorrect-jacobian/79943 "2022-04-26T21:38:42Z")

</div>

Hi all, I am trying to differentiate a vector function with respect to a subset of the variables symbolically, but I am running into problems. Below is the problematic code: using Symbolics, SparseArrays, LinearAlgebra…

---

## [WebMercatorfromLLA not defined](https://discourse.julialang.org/t/webmercatorfromlla-not-defined/78358)

<div class="topic-metadata">

**Author:** [@julio.ca2020](https://discourse.julialang.org/u/julio.ca2020)\
**Replies:** 9\
**Last updated:** [April 26, 2022, 7:59pm UTC](https://discourse.julialang.org/t/webmercatorfromlla-not-defined/78358 "2022-04-26T19:59:33Z")

</div>

I am trying to use WebMercatorfromLLA… Julia tells me that is not defined. Any other transformation, function work ERROR: UndefVarError: WebMercatorfromLLA not defined Stacktrace: \[1\] top-level scope @ ~/Documents/Hardw…

---

## [Makie interactions with nested plot](https://discourse.julialang.org/t/makie-interactions-with-nested-plot/80072)

<div class="topic-metadata">

**Author:** [@filchristou](https://discourse.julialang.org/u/filchristou)\
**Replies:** 0\
**Last updated:** [April 26, 2022, 3:49pm UTC](https://discourse.julialang.org/t/makie-interactions-with-nested-plot/80072 "2022-04-26T15:49:03Z")

</div>

I am looking at using some 3rd party makie interactions for my recipe and I cannot seem to make it. I am leveraging the functionality of the GraphPlot recipe by wrapping it around a new application-specific recipe. Let…

---

## [Equivalent of the Python Package PaCAL in Julia](https://discourse.julialang.org/t/equivalent-of-the-python-package-pacal-in-julia/79978)

<div class="topic-metadata">

**Author:** [@RoyiAvital](https://discourse.julialang.org/u/RoyiAvital)\
**Replies:** 1\
**Last updated:** [April 26, 2022, 3:43pm UTC](https://discourse.julialang.org/t/equivalent-of-the-python-package-pacal-in-julia/79978 "2022-04-26T15:43:41Z")

</div>

The ChebFun MATLAB package links to a nice Python package called PaCAL. This nice package allows doing some arithmetic with random variables / distributions and get and object which basically represents the PDF without …

---

## [Getting index and value of the second highest element of CuArray](https://discourse.julialang.org/t/getting-index-and-value-of-the-second-highest-element-of-cuarray/80054)

<div class="topic-metadata">

**Author:** [@Phuntsho](https://discourse.julialang.org/u/Phuntsho)\
**Replies:** 1\
**Last updated:** [April 26, 2022, 3:24pm UTC](https://discourse.julialang.org/t/getting-index-and-value-of-the-second-highest-element-of-cuarray/80054 "2022-04-26T15:24:21Z")

</div>

For CuArray, say, A, we can use findmax(A) to find the value and index of the highest element efficiently. Is there a similar function that does for the second element? Thank you in advance for your help.

---

## [.glade file import issues](https://discourse.julialang.org/t/glade-file-import-issues/79880)

<div class="topic-metadata">

**Author:** [@candidaorelmex](https://discourse.julialang.org/u/candidaorelmex)\
**Replies:** 2\
**Last updated:** [April 26, 2022, 3:00pm UTC](https://discourse.julialang.org/t/glade-file-import-issues/79880 "2022-04-26T15:00:54Z")

</div>

Hi everyone, I’m trying to import a layout file I generated with glade with GtkBuilder, but whenever I do so Julia crashes:(. Here my script: using Gtk, LightXML b = GtkBuilder(filename = "glade\_file") I can’t upload…

---

## [There is an error in tutorials about the Variational inference](https://discourse.julialang.org/t/there-is-an-error-in-tutorials-about-the-variational-inference/79975)

<div class="topic-metadata">

**Author:** [@huangruiping9](https://discourse.julialang.org/u/huangruiping9)\
**Replies:** 1\
**Last updated:** [April 26, 2022, 2:45pm UTC](https://discourse.julialang.org/t/there-is-an-error-in-tutorials-about-the-variational-inference/79975 "2022-04-26T14:45:16Z")

</div>

Variational inference (VI) in Turing.jl Copy-paste from 5. Linear regression¶ “remove\_names = filter(x-\>!in(x, \[:MPG, :Model\]), names(data))” has an error should be replace by “remove\_names = filter(x-\>!in(x, \[“MPG”…

---

## [Turing.jl coin flipping example with large number of data points](https://discourse.julialang.org/t/turing-jl-coin-flipping-example-with-large-number-of-data-points/33049)

<div class="topic-metadata">

**Author:** [@mthelm85](https://discourse.julialang.org/u/mthelm85)\
**Replies:** 4\
**Last updated:** [April 26, 2022, 9:47am UTC](https://discourse.julialang.org/t/turing-jl-coin-flipping-example-with-large-number-of-data-points/33049 "2022-04-26T09:47:41Z")

</div>

Please forgive my naïveté (I don’t have any formal training in probabilistic programming/Bayesian statistics) but I’m trying to understand something about the coin flipping example in the Turing.jl docs. Here’s a bare-b…

---

## [Error handling in CUDA kernels](https://discourse.julialang.org/t/error-handling-in-cuda-kernels/79692)

<div class="topic-metadata">

**Author:** [@fedoroff](https://discourse.julialang.org/u/fedoroff)\
**Replies:** 6\
**Last updated:** [April 26, 2022, 8:37am UTC](https://discourse.julialang.org/t/error-handling-in-cuda-kernels/79692 "2022-04-26T08:37:52Z")

</div>

In my CUDA kernel I check for a specific condition and would like to terminate the execution if the condition is fulfilled. What is the proper way to do so? How can I throw an error from inside a CUDA kernel?

---

## [Help speeding up problem with Convex.jl](https://discourse.julialang.org/t/help-speeding-up-problem-with-convex-jl/79005)

<div class="topic-metadata">

**Author:** [@josuagrw](https://discourse.julialang.org/u/josuagrw)\
**Replies:** 31\
**Last updated:** [April 26, 2022, 8:11am UTC](https://discourse.julialang.org/t/help-speeding-up-problem-with-convex-jl/79005 "2022-04-26T08:11:52Z")

</div>

I’m currently solving a convex problem with Convex.jl and COSMO.jl. The text output from COSMO indicates that the solution is actually quite fast (less than a second) but it takes ca. 30 seconds to set the problem up wit…

---

## [CUDA.jl - Multiple Threads to Initiate Same CUDA Algorithm](https://discourse.julialang.org/t/cuda-jl-multiple-threads-to-initiate-same-cuda-algorithm/79728)

<div class="topic-metadata">

**Author:** [@moukann](https://discourse.julialang.org/u/moukann)\
**Replies:** 3\
**Last updated:** [April 26, 2022, 7:58am UTC](https://discourse.julialang.org/t/cuda-jl-multiple-threads-to-initiate-same-cuda-algorithm/79728 "2022-04-26T07:58:04Z")

</div>

Hello all, Let’s say we have a situation where we run a for loop with “n” times. Every for loop contains CUDA kernels and CPU functions mixture. However, every operation is independent from each other. for index = 1:n …

---

## [Recording mouse position coordinates in plots?](https://discourse.julialang.org/t/recording-mouse-position-coordinates-in-plots/28848)

<div class="topic-metadata">

**Author:** [@davide](https://discourse.julialang.org/u/davide)\
**Replies:** 16\
**Last updated:** [April 26, 2022, 4:56am UTC](https://discourse.julialang.org/t/recording-mouse-position-coordinates-in-plots/28848 "2022-04-26T04:56:50Z")

</div>

Is there a way to click on a plot and have the coordinates at the pointer recorded (read)? (E.g. like, in R, the locator() function). I mostly use Plots.jl but I may use a different package (and I would prefer interact…

---

## [Most solid/easiest way to plot Earth on 3D with specific points on it using Pluto?](https://discourse.julialang.org/t/most-solid-easiest-way-to-plot-earth-on-3d-with-specific-points-on-it-using-pluto/76942)

<div class="topic-metadata">

**Author:** [@eduardosalaz](https://discourse.julialang.org/u/eduardosalaz)\
**Replies:** 2\
**Last updated:** [April 26, 2022, 4:39am UTC](https://discourse.julialang.org/t/most-solid-easiest-way-to-plot-earth-on-3d-with-specific-points-on-it-using-pluto/76942 "2022-04-26T04:39:56Z")

</div>

Hi there. I am currently working on a project to visualize a worldwide TSP in which the nodes have specific coordinates on Earth. For a quick viz, I have successfully used GMT.jl (which is quite a great package) to plot…

---

## [Analytic derivatives for multivariate functions in JuMP](https://discourse.julialang.org/t/analytic-derivatives-for-multivariate-functions-in-jump/79750)

<div class="topic-metadata">

**Author:** [@optimist](https://discourse.julialang.org/u/optimist)\
**Replies:** 2\
**Last updated:** [April 26, 2022, 2:26am UTC](https://discourse.julialang.org/t/analytic-derivatives-for-multivariate-functions-in-jump/79750 "2022-04-26T02:26:32Z")

</div>

I am trying to provide derivatives for a function to see if it can speed up the optimization, but I am running in to errors. Unexpected array VariableRef\[x\[1\], x\[2\], x\[3\], x\[4\]\] in nonlinear expression. Nonlinear expres…

---

## [Lasso fit with non-negative coefficients](https://discourse.julialang.org/t/lasso-fit-with-non-negative-coefficients/79923)

<div class="topic-metadata">

**Author:** [@Aminath\_Shausan](https://discourse.julialang.org/u/Aminath_Shausan)\
**Replies:** 4\
**Last updated:** [April 26, 2022, 1:40am UTC](https://discourse.julialang.org/t/lasso-fit-with-non-negative-coefficients/79923 "2022-04-26T01:40:49Z")

</div>

Hi I am using a Lasso model for feature selection. At present I use the function lassoFit = fit(LassoPath, X\_train, Y\_train, λ = lamGrid, maxncoef=maxncoef) I have the following question. (1) Some estimated coefficie…

---

## [Why do I keep getting a Method Error for Graphs package every time?](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004)

<div class="topic-metadata">

**Author:** [@Temi-Tory](https://discourse.julialang.org/u/Temi-Tory)\
**Replies:** 6\
**Last updated:** [April 25, 2022, 8:28pm UTC](https://discourse.julialang.org/t/why-do-i-keep-getting-a-method-error-for-graphs-package-every-time/80004 "2022-04-25T20:28:23Z")

</div>

Hello there, I am having a seemingly recurring issue here. Lets say I am working on a Julia file with graphs for a while and everything is going well. Then I close that file and don’t use it for ages, and then the next…

---

## [Anything like Halide in the Julia ecosystem?](https://discourse.julialang.org/t/anything-like-halide-in-the-julia-ecosystem/80005)

<div class="topic-metadata">

**Author:** [@Phil\_Tomson](https://discourse.julialang.org/u/Phil_Tomson)\
**Replies:** 1\
**Last updated:** [April 25, 2022, 6:47pm UTC](https://discourse.julialang.org/t/anything-like-halide-in-the-julia-ecosystem/80005 "2022-04-25T18:47:13Z")

</div>

Halide (https://halide-lang.org/) is an embedded DSL in C++ that allows you to describe an algorithm as well as a “schedule” with the intent on targeting an algorithm to a specific architecture (CPU, GPU, etc) in an opt…

---

## [Makie - Massive growth of memory usage when updating an image](https://discourse.julialang.org/t/makie-massive-growth-of-memory-usage-when-updating-an-image/72460)

<div class="topic-metadata">

**Author:** [@nelsonah](https://discourse.julialang.org/u/nelsonah)\
**Replies:** 5\
**Last updated:** [April 25, 2022, 3:33pm UTC](https://discourse.julialang.org/t/makie-massive-growth-of-memory-usage-when-updating-an-image/72460 "2022-04-25T15:33:41Z")

</div>

I have spent a week on this issue and need help. My application is to generate a file of images that I later massage and make into a movie. All works great EXCEPT the memory usage limits my number of frames before it c…

[Previous page](https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=284)

[Next page](https://discourse.julialang.org/c/domain/10.md?no_subcategories=false&page=286)