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Multilayer Networs

Has anybody heard of a Julia implementation of Multilayer networks? These are networks formed of multiple graphs over the same set of nodes, with different edges for the different graphs. Finally,...

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Help me extend this solution for high dimensional matrices in Julia

stackoverflow.com Extend this solution for high dimensional matrices in Julia matrix, julia asked by your_boy_gorja on 04:39AM - 30 May 20 UTC 4 posts - 2 participants Read full topic

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How to switch ODE from DifferentialEquations to OrdinaryDiffEq?

Hello, I am using a ChromeBook and I can’t install DifferentialEquations; but I can run OrdinaryDiffEq. I set a function and the solver based on the DifferentialEquations’s syntax but: julia> prob...

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Wrong use of asymptotic notation in the Multi-dimensional Arrays page

I’m learning Julia and, reading the documentations in the past days, I wrote down few comments on typos, unclear sentences, etc. I’m new to the community and I’m unsure whether I should directly open...

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Is there a weave live preview server?

I want to write a document using weave, but currently I have to manually rerun the “save to file” or “show preview” commands in vscode. Is there a server which watches the file and recompiles the...

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Get Vector of filenames in directory matching regex. But has the language...

I want to do something similar to what this 2017 StackOverflow person wanted: Get a Vector of all filenames in a directory matching a certain regular expression. This answer says the following was...

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Macro for optional threading not working

macro optthreads(switch,code) :( if $(esc(switch)) esc(:(Threads.@threads $$code)) else $(esc(code)) end ) end function test(par) @optthreads par for i in 1:80 print(Threads.threadid()) end end...

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Appending arrays in @threads

What’s the correct way to achieve three arrays of size 10 related to the following? A = []; B = []; C = []; Threads.@threads for i = 1:10 append!(A,i) append!(B,i) append!(C,i) end The above either...

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SIR on networks with LightGraphs

I am creating the simplest and lowest level SIR simulation with LightGraphs and ModelingToolkit (I am a beginner). For now, I have a simple network of 10 nodes and 7 edges. And it is a directed graph....

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Using multiple modules in a single line

Is using Module1, Module2 equivalent to using Module1 using Module2 ? Is the order significant in single line version? 9 posts - 4 participants Read full topic

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How to test an app at the REPL

Say, I want to develop a standalone, compiled application; after reading about various options, I settled on creating a project via Pkg.generate. Now, I have a project structure with Manifest.toml and...

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Src\cpu_info.jl

I was using v1.3.1. Then I upgrade for v1.4.2 and reinstalled some packages. Now, I have both versions. However, in v1.4.2 I cannot use some packages. E.g., when I type “using DifferentialEquations” I...

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Pkg> test Atom errors

I had Atom already installed, then installed Julia. Juno appears to operate properly inside Atom but all I’ve done up to this point is some tutorials in it. Where I got the errors was running Julia in...

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Read CSVs. Build DataFrame with column identifying the original CSV

I’ve been trying to learn Julia (1.4) by doing something I commonly do with R or Python: Have a bunch of CSVs, each with a year (YYYY) in the filename. Some datasets have columns that aren’t in the...

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How to create an unevaluated block for scratch expressions?

Hey guys! I’m used to littering the code with copious amounts of top-level blocks, serving as evaluation history, like here: Clojure: #_ (do (stuff-and-things) (more-stuff-and-more-things)) Common...

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Not clear what 0.01f0x is in the Flux docs

I searched a bit, but it remains unclear to me what 0.01f0x is in the Flux docs: While one could change the activation function (e.g. to use 0.01f0x ), the idiomatic (and safe way) … Perhaps a typo? 5...

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How to handle weakrefstrings when importing a CSV file

I am using Julia 1.4 and CSV 0.62. I have a CSV file that has a column with some JSON in it (e.g. {"type":"Point","coordinates":[-3.73610686,58.3917902]})`. When I look at the data type I am told it...

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When does macro expansion take place/use macro inside hot loop?

I have a function inside a nested loop, and I’m cleaning it up with @unpack from UnPack.jl for about 20 parametrs/pre-allocated matrix: @unpack a,b,c = p #parameters... @unpack m1,m2,m3 = p...

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Stubborn 1-based LinearIndices for the custom type with non-zero based indexing

Greetings and apologies if this is very basic. I am trying to create a custom type subtyped from AbstractArray to dispatch on it in place of a dense array at times. I’ve been following instructions in...

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Quadgk not working for potential convert from MATLAB to Julia?

In MATLAB, quadgk(@(s) (exp(-s.^2)-1)./s.^2,0,1) gives me 0.8615, consistent with the correct answer, 1 - 1/e -sqrt(pi) erf(1). In Julia, quadgk(s-> exp(-s.^2-1.0)./s.^2,0.0,1.0) gives me ERROR:...

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