How to write copying & pasting code macro like `include`?
I want to copy & paste some code from other files. I know there is include but I think it is to include them to module’s global scope. I uses PyCall, and to implement Pythonic class, I need to...
View ArticleWhy does this constructor not work with 1 Int parameter?
Hi all, I am new to Julia and am experimenting with trying to create compact code. I created the following types: module Types export Percentage struct Percentage <: Real value::Float64...
View ArticleCompute significance of Pearson Correlation Coefficient
Is there an option to compute the significance level (p-value) of the Pearson correlation coefficient using Statistics.cor ? This question was already asked before (here) but I couldn’t find more...
View ArticleWhy does 2^100 give 0?
As the title says, if I input a large enough computation into the REPL, it outputs 0, no matter whether I store the value or not. I understand that as I’m on a 64-bit system, my default type for...
View ArticleEXCEPTION_ACCESS_VIOLATION when using LinearAlgebra.jl
I noticed this problem on my machine. I am thinking it is a installation issue and am wondering what else may be affected. Thanks in advance for any insight you might give in this matter. The problem...
View ArticleImporting a binary file to a struct
Hi, I’m trying to port over some C++ & IDL code to Julia, the code basically opens up a binary file which has a 512 byte header described by a c++ struct. The reaminder of the file is a stack of...
View ArticleTrouble with Dot Syntax: .* Works, .+ and sin. Do Not Work
Hello. This is my first post on here. I am doing some work with arrays for a small simulator. I have noticed that multiplication dot functions work fine but addition and trig functions do not. Example...
View ArticleParallelising a broadcast on a large-allocating function
I would like to parallelise a broadcast of a complicated function on my machine. Being new to parallel computing, I’m getting swamped and lost in all the posts and comments and open issues on it. My...
View ArticleWhy threadIdx().y shows some random value?
Hi, I am just new to CUDA and trying to learn. I tried to print thread id’s in x and y direction using the following code: using CUDA function test_kernel() @cuprintln("idx: %d, idy:...
View ArticleUser Defined Functions Using Input
This is my first program in Julia. I am most familiar with python, but as a math teacher I fell in love with being able to define a function like you would on paper (e.g. f(n) = 4n+4). I am trying to...
View ArticleAdding elements to dictionaries?
Suppose I have a dictionary d = Dict("a"=->(1,2,3)) and I want to add an element with key "b" to the dictionary. The following works: merge!(d,Dict("b"=>(4,5,6))) However, this only seems to...
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Is there a way to plot negative numbers on a log scale?
I know we are not supposed to be able to take the log of a negative number (or 0), but sometimes the scale is really useful. using Plots x = -10:0.01:10 y = x plot(x, y) plot(x, y, yaxis = log10.(y .+...
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Excel to Julia
A bit of background - I am an actuary who is trying to learn Julia. In doing so, I am trying to move some of the models that I would usually make in Excel to Julia. I am stuck on one particular...
View ArticleLoop and argument spacing style
I have some stylistic preferences listed below. I am wondering which I can keep using, and which I should change to conform to the community. I used the “Format Document” option in VSCode, and it made...
View ArticleHow to use a loop
This is a question related to some homework. I have to: Sort 25 assets according to the sum of returns over the last 22 days (R_{t-22}+R_{t-21}...+R_{t-1}). In (the evening of) period t-1 identify the...
View ArticleBitArray{3} mesh
What is the recommended process to mesh a BitArray? The meshing method requires an isovalue. For a BitArray, an isovalue of 1, true or :true don’t seem to work: 0 faces are returned. Another method is...
View ArticleNightly build CI failing because rand(UnitRange) changed (when to care?)
The tests of a package of mine are failing with the nightly build of Julia, and I have found out that the reason is that the behavior of the random number generator changed when it is called with a...
View ArticleTruncating and re-saving a Mesh (in .stl format)
I would like to load a .stl file of triangular facets, remove most from the mesh and save as a new .stl file. using FileIO, MeshIO mesh = load("test.stl") using GeometryBasics new_mesh =...
View ArticleJulia, PiGPIO for Button control
I’m new to Julia and I’m just toying with the language on Raspberry Pi with the PiGPIO library. Is there doc on how to use the PiGPIO.callback function to monitor Edge transitions? I can see the...
View ArticleERROR: MethodError: no method matching decompose()
Hi, I have defined the following types: struct Percentage <: Real value::Float64 Percentage(x) = x < 0 ? new(0) : x > 1 ? new(1) : new(round(x, digits = 6)) end Base.show(io::IO,...
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