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Question about performance when iterating

@jokasimr wrote: Hi! Really like julia and want to learn how to debug performance better. I’m doing a project on iterated maps, and started writing in python and then decided to try julia. But when...

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Scattergram

@erlebach wrote: I am making a simple scatterplot: using Plots tk = [1,2,3,5,8] y = [1. for i in 1:length(tk)] pl = scatter(tk, y, title="Poisson train tk") display(pl) This works. However, I feel...

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Multiplication times for complex matrices: julia vs Matla

@kw_martin wrote: I’ve been looking at some different filter approaches for analyzing ECG signals using Matlab and have recently implemented them in julia in order to get a speed improvement. I have...

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Interger Division

@Lee wrote: I’m trying to divide between two integers, but a Float is returning. I just need an Int return. Any ideas? Appreciate. Posts: 4 Participants: 3 Read full topic

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Julia can process text similar to Perl

@Marks wrote: Does Julia have the same word processing functions as Perl? Posts: 4 Participants: 4 Read full topic

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Getting all types defined in a module

@Bastien wrote: Hi, Is there a way to get all the types defined in a module? For instance I am using DifferentialEquations.jl a lot and I’d like to have a list of all the types defined in that module....

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Construct Julia Dataframe from row data

@nnn wrote: When I have data in columns, I can construct a DataFrame like this: using Dataframes nameData = ["Alice", "Bob"] surnameData = ["Smith", "Jones"] df = DataFrame(name = nameData, surname =...

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Unknown error with norm() function

@iamsuddhasattwa wrote: I am having trouble with using the basic norm() function after having loaded using LinearAlgebra; In the lines below, Phi is a matrix created in the middle of a larger program....

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HELP! Can not install packages... Git can not clone...

@benibilme wrote: Hello, I have a manjaro installed pc. I installed julia through manjaro package management system (pacman). The installed julia version is 1.3.1. I tried to install several packages...

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Use of constant types

@erlebach wrote: I am struggling with the issue of changing the type of a global variable. I keep a set of functions I am working on in a file “global_functions.jl”, which I include in my main...

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How to impose ordered constraints to model variables

@takuizum wrote: Hi, everyone. Lately, I have been learning Bayesian inference with Julia and Turing and trying to implement IRT(Item response model; logistic regression with latent variables). Today,...

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Function argument Array{Array{ComplexF64,2},1} seems to be ignored

@kw_martin wrote: I have a function definition: function simBiquad(xin::Array{ComplexF64,1}, A::Array{Array{Complex{Float64},2},1}, B::Array{Array{Complex{Float64},2},1},...

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Unable to generate random tuples

@mindaslab wrote: Can some one explain why I am unable to generate random tuples. The code is here: https://gitlab.com/snippets/1955383 Thank you. Posts: 3 Participants: 3 Read full topic

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DifferentialEquations Parameters

@jacob-roth wrote: When passing parameters p to the function f of an ODEProblem (or any problem type in the DiffEq universe), does p always have to be an array? Is there a “best practices” reason for...

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Saving Audio with Correct Sample Rate

@ambiso wrote: Hay! I’m trying to generate and save a very simple 440Hz waveform. Unfortunately, the generated file does not inherit the 44100Hz sample rate that I assigned. Instead it has a 8000Hz...

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Overriding methods with closures?

@gleyland wrote: Hi, Is it possible to override a method with a closure? function add(x, y) x + y end function test() add(y) = add(1, y) add(2) end test() ERROR: MethodError: no method matching...

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TimerOutputs.jl

@erlebach wrote: I am trying to time a piece of code. Here is a MWE: using TimerOutputs function x() @timeit to "Timing" a = 3 + 4 end x() I get the error: “to” is not defined. What is my error?...

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Julia on remote RedHat cluster

@LysandrosAn wrote: Dear all, in order to conduct numerical calculations I have been granted access to a remote high-performance cluster running on Redhat linux. So far, I can run a batch script that...

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Speed difference when storing annonymous function in variable vs. function

@moustachio-belvedere wrote: Apologies if I am making a mistake with my benchmarking here, but I am wondering why there is such a significant speed difference between using an annonymous function...

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How to take slice of array without it turning into vector

@kw_martin wrote: Background, I am realizing a filter bank of FIR filters that involve matrix operations on Array{ComplexF64,2}. Every time I take a slice, it turns into an Array{ComplexF64,1} and I...

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