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JuliaLang/julia

http://julialang.org : A fresh approach to technical computing.

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Repo info

Activity

Jan 18 21:42

SC: Julia: ordschur command (update)
Dec 14 2019 20:36

DS: What is the quality of the combination nteract & Julia?
Nov 28 2019 13:03

CV: GPU Parallelization: Kernel for Value Function Iteration on Matlab
Nov 05 2019 16:39

SC: How to record hardware and software info in Julia?
Oct 31 2019 10:05

SC: Solving SDEs in R until a prespecified value is reached
Jul 22 2019 18:14

CR: Julia set in Julia (and other fractals)
Jun 17 2019 15:19

CR: Sampling and Reconstructing a signal in Julia
Jun 04 2019 14:32

CR: How to speed up simple linear algebra optimization probelm in Julia?
Jun 03 2019 14:04

DS: What should I master better for professional data science in economics and finance?
May 30 2019 17:05

SC: Julia -- Beginner - Use Number type
May 27 2019 22:54

SC: Julia -- DifferentialEquations.jl -- Error with symplectic integrator
May 18 2019 10:51

CV: Open source code for factor-augmented VAR (FAVAR) model
Apr 14 2019 01:41

CR: Optimizing my 2D Ising model code in Julia
Apr 05 2019 17:00

SC: Julia causes my computer to freeze
Feb 08 2019 19:41

SO: In Julia 1.0+: How do I get strings using redirect_stdout
Feb 08 2019 12:46

SO: JuliaFEM Stiffness matrix for a Poisson equation brings a zero matrix
Feb 08 2019 08:07

SO: Where can I find Missing Functions in Julia?
Feb 08 2019 06:58

SO: Why is a Julia function name (without arguments) silently ignored?
Feb 08 2019 03:42

SO: How to generate all possible sample paths in Julia from vectors of unequal length
Feb 07 2019 22:52

SO: Entry point not found when embedding Julia in C with gcc on Windows

saolof

@saolof

on the windows shell or powershell, when I wget a text file, it just outputs its contents

but in Julia I get an error message when I type the same command in shell mode

ah nevermind, theres Base.download

apprenticearnab

@apprenticearnab

Hello , everyone , I am Arnab Kumar Mallick and I am highly interested in contributing to Machine Learning and Deep Learning aspects of Julia. Please, suggest me some issues or project on which I can work on .

stardoxx

@stardoxx

I’m getting error Pkg not defined

matrixbot

@matrixbot

bhagwan What is your preferred JSON serialization library?

bhagwan I mostly develop in go and like the struct marshaling/unmarshaling, so I think I would enjoy something similar

bhagwan But a quick google search of JSON libraries I found, JSON.jl, JSON2.jl, JSON3.jl, LazyJSON.js, Unmarshal.jl, etc

bhagwan I believe LazyJSON and JSON are the only ones without marshal

Spencer King

@spencerking

Hello everyone, I'm new to Julia and was running into some issues with pushing to arrays, is this the right place to ask for help?

Seth Bromberger

@sbromberger

@spencerking most discussion is happening on slack or on discourse. Do you have the links?

Spencer King

@spencerking

@sbromberger If you could share the slack link that would be great

matrixbot

@matrixbot

&Adam @spencerking see the instructions under "chat" on https://julialang.org/community/

Spencer King

@spencerking

I don't know how I missed that. Thank you!

BridgingBot

@GitterIRCbot

[irc] <vk2fak-John> hi all, I was running though some simple array functions and came across this.If I append! the array with a float instead of an int I get the expected error, but it all adds a crazy number to the array..while using push! same error but nothing gets added to the array..?

BridgingBot

@GitterIRCbot

[slack] <jakni> So what happens is that it resizes the array first, and then attempts to copy the values in. The copying errors, but that happens after the resize. You could argue that it should check if the values are compatible with the destination array before copying, but that only works when appending something with a known eltype, so it would not work for all iterators.

[slack] <jakni> It's annoying behaviour, but the alternatives I can see are:

Have append! behave differently for AbstractArray versus other iterators, which is also confusing, or
Cache all the values for iterators in an intermediate array, which can be inefficient.

BridgingBot

@GitterIRCbot

[slack] <jakni> There's an open issue with this: JuliaLang/julia#15868

BridgingBot

@GitterIRCbot

[irc] <CuriousErnestBro> Anyone here?

BridgingBot

@GitterIRCbot

[irc] <CuriousErnestBro> So I want to implement a boosting algorithm (paper replication for my thesis)

[irc] <CuriousErnestBro> And I want to find out whether Julia is the right tool

[irc] <CuriousErnestBro> So my supervisor is a pro in R, and I'm pretty good with python and its data libraries (numpy, numba, pandas)

[irc] <CuriousErnestBro> But with boosting I will need to run tons of univariate regressions, all simultaneously

[irc] <CuriousErnestBro> And also do that multiple times, in a loop (hence why R is a poor choice)

[irc] <CuriousErnestBro> Also my ideal tool should have some functionality to construct graphs (the G=(V,E) type)

BridgingBot

@GitterIRCbot

[slack] <jakni> For those needs you mention there, Julia is perfect. It's fast in loops, good at data science, and has plotting and statistics packages.

[slack] <jakni> Don't use Julia if there is particular R packages you need that are very niche, or if you really need to write in a language that your colleagues use.

BridgingBot

@GitterIRCbot

[slack] <Aaron R. Matthis> Well, there's https://github.com/JuliaInterop/RCall.jl for those niche packages just in case there's nothing in Julia yet.

fuying

@fuyingfuying

Excuse me, my computer crashed a few days ago, reinstalled win10, installed julia1.3.0, and the error message will appear when installing many packages.

The installation of Flux, plots, makie and other packages will be like this, but the installation of JuliaDB,interact and other packages is no problem。Why did this happen?How can I solve this problem？thanks

BridgingBot

@GitterIRCbot

[slack] <jeffrey_sarnoff> It sounds as though the Julia installation is corrupted. Not knowing what is causing the problem, here are suggestions

I would write down the instructions here https://www.easeus.com/partition-manager-software/repair-corrupted-ssd-hdd.html to "Repair corrupted SSD/HDD when PC can be booted" in "Part 2" of the page, restart the machine, follow those instructions, restart the machine when its done. [it may well be unneeded, but if it is needed -- it is badly needed].

Then should delete v1.3.0 and then download v1.3.1 and install that (the current stable version). As I recall there are two directories to delete: C:\Users\<username>\.julia and C:\Users\<username>\AppData\Local\Julia-1.3.0 . After installing v1.3.1, run the REPL and do ] up. Restart the REPL and add Plots. Then try using Plots if that is ok, add other packages (one at a time until you feel things are going well).

If this does not resolve you situation, let us know -- someone else may have another approach.

BridgingBot

@GitterIRCbot

[irc] <Foaly> hi

[irc] <Foaly> i'm just trying julia for the first time, and i've been hitting my head against the wall for an hour now:

[irc] <Foaly> i'm trying to use the Plots package

[irc] <Foaly> and i want the ticks on the x-axis to be labeled as the time, and that works so far...

[irc] <Foaly> but now i only want it to label the full hours, and i don't want it to print all the :00:00 after every hour

[irc] <Foaly> but i can't figure out how i can format the values for the ticks

[irc] <Foaly> i know there is a formatter attribute for axis: https://docs.juliaplots.org/latest/attributes/

[irc] <Foaly> but how am i supposed to pass that?

BridgingBot

@GitterIRCbot

[irc] <Foaly> if i pass yformatter=a->"a"

[irc] <Foaly> it replaces all the ticks for the y axis with "a"

[irc] <Foaly> but the same won't work for the x axis

[irc] <Foaly> ah great, it's just unsupported

BridgingBot

@GitterIRCbot

[irc] <Foaly> oh, and if possible i'd like to have 2 x axes

[irc] <Foaly> for 2 different timezones

BridgingBot

@GitterIRCbot

[irc] <Foaly> does noone here have experience with Plots?

BridgingBot

@GitterIRCbot

[slack] <chrisrackauckas> most people are on the Slack in #plotting

[slack] <chrisrackauckas> or #plots-bridged

[slack] <chrisrackauckas> this is not a very widely used channel anymore