Please read: make it easier to help you

Welcome to the Julia Discourse! We are enthusiastic about helping Julia programmers, both beginner and experienced. This public service announcement (PSA) outlines best practices when asking for help. Following these points makes it easier for us to help you and more likely you’ll get a prompt, useful answer.

Keywords are highlighted to make it easier to refer to specific points.

  1. Choose a descriptive title that captures the key part of your question, eg “plots with multiple axes” instead of something generic like “help me with plotting”. Make use of tags and categories (you can edit those and the title after posting). These will make it more likely that your question will be seen by the people who can potentially help.

  2. Post quoted code by enclosing code blocks in triple-backticks ```:

    ```julia
    function f(x, y)
        x + y
    end
    ```
    

    This will highlight syntax and use a monospace font.

    Don’t post your code as a screenshot; it is difficult to read and impossible to copy-paste.

  3. Indent your code to reflect its structure (your editor should help you with this). Indented code is easier to understand and troubleshoot. Use the preview window to verify code is properly formatted before posting.

  4. Do your best to make your example self-contained (“minimal working example”, MWE), so that it runs (or gets to the error that you want help with) as is. This means including package loading (e.g. using ThatPackage) and any data that the code operates on. If your data is large or proprietary, generate example data if possible and include that. This StackOverflow answer explains how a DataFrame can be turned into a string representation that can be copy/pasted.

  5. Simplify your code to the smallest piece of code that still shows your problem. This step takes the most effort but is the most important for fixing your problem. Short, simple examples tend to get answers quickly.

  6. Include code instead of REPL output, except when the latter is relevant. (REPL is “read-evaluate-print loop”, the julia> command line.)

  7. Include full stacktraces (that is all of the stuff that comes along with an error message). They often contain valuable information, even if they seem cryptic. Please quote the stacktrace as well (see point 2).

  8. Please use the latest stable version of Julia and released packages (you can ensure the latter with pkg> up). If you cannot do so, make sure you note the relevant versions by including the quoted output of versioninfo() and pkg> st --manifest SomePackage.

  9. If you have a plotting (style) question, include a plot with the desired output (possibly generated with other software).

  10. You may not get a response here for packages with a very narrow audience. In that case, you may want to consider opening an issue on Github (or Gitlab, etc) for the package repository, just to ask a question. Most packages are OK with this.

  11. If an answer solves your problem, mark it as solved by clicking the “:white_check_mark: Solution” button. This makes it easier for future help-seekers to find the correct answer, especially in a long discussion.

  12. Avoid extending the original question that has already been answered with many new questions. It is better to start a new thread.

272 Likes
Simple type question
Mixed Type Variables in Julia
Saving JUMPArray to JLD or JLD2 file
Can't understand numerical errors on julia
Format x-labels using VegaLite
Starting With Julia!
Correct constraint statement
Julia integral calculation - community module or own module?
Preallocating large matrices in all cores is slower than allocating every time
ERROR: LoadError: syntax: invalid identifier name "&&"
Plot limit at next tick label
Compute fourrier transform in Julia
JuMP : not getting the correct solution of the optimization problem
Suppress Plot Window when output to animation
Optimize not working with function that has find_zero
How to undershand the Objective goes greater while itering?
JuMP problem with all_variables
Problem With Integer Stack Size
Help with Logit NLP problem
Turing autodiff error
Distributed Simulations
How to use DifferentialEquations with complicated equations
Enum not at top level expression
Waveform Characterization
Keyword function error inverts position of arguments?
How to efficiently splat values into argument list?
Downsides to depending `mutable` field on `DataType`?
How to know variable order in the result after solving an ODE
Linking subplot x-axes containing dates
Plotting with JuMP variables
The "sum" in constraint
Newbie question regarding opening files
Type instability in array concatenation
Flux.jl Inconsistent Training on Custom Architecture
Unitful + ForwardDiff
Use of MINLP in Julia
Why is a type when used as a function given a boolean true return a number?
How to upgrade code for a symmetric distance matrix from julia-1.0 to julia-1.6
Annotation to figure with 2 Subplots
I need to convert these parallel robot algorithms to Julia from Matlab, but I cannot get the forward kinematics to work
C++ code much faster than Julia how can I optimize it?
Updating Old Julia Code - Cant get past ArgumentError: Invalid Index
Show right y-axis using twinx() with Plots pyplot()
Why doesn't this code work? I can't figure out
Updating Old Julia Code - Cant get past ArgumentError: Invalid Index
Trying to use quadprog function from MathProgBase, has error "no method matching"
Question on use of include from 0.6 -- 1.0
Weird duplicated entries with different values in SparseMatrixCSC
Why do Rationals promote to Floats
Plots and truncating numbers?
Can we use Openslide or do we have a tool to open MRXS files from microscope?
Nan Error in CSV
Julia's processing capacity
Problem visualizing x-axis' ticks on a plot
How to pass on kwargs? - updated
Linking subplot x-axes containing dates
The photo is from a Python code so how could I have the same result in Julia?
Nonlinear curve fitting with weights with LsqFit
Loading image using julia
Getting Gap and #Nodes in JuMP v0.19
Initialization of an empty array, which will be filled in a loop with arrays of different sizes
3D plotting packages
Position of plots on the screen, Plots.jl ,gr()
Writing dataframes or arrays from Julia to excel file
Better editor placeholder text
Julia silently stop working while computing the rank of some not that big matrix
How do I fit generalised linear multilevel models including offsets?
How do I fit generalised linear multilevel models including offsets?
PRECOMPILATION ERROR-CSVReader
Array of functions - is there a way to avoid allocations performance penalty?
Differential Equation Parameter Estimation Using Only A Subset of Variables
MethodError: no method matching floatrange when running histogram. 1.7.0 Win 11 21H2 AMD 5900Hx
Question ) Mathematical equivalence, but different results of fixed point?
Performance of Memory Mapped Arrays (vs. JLD2)
Array definition error
Can the compiler automatically optimize this code?
@time is off by at least 10x
Using JuMP to solve the heat equation - performance tips requested
Plots package install error
How to plot a mirror graph from the one created
Custom likelihoods in Turing.jl
Unexpected Type conversion
Question about matrix
SharedArrays. Stability
If f = +, why can't I use f as an infix operator (e.g., 2 f 3 == 5)?
The mean of 3-d EmsembleSolution from StochasticDelayDiffEq
I'm blind again, how to supress subplot annotations?
Newton method in PowerModels.jl
Switch from HttpServer.jl to HTTP.jl
Modify a dictionary under a new name modifies the original dictionary
Calling julia functions from python
What am I doing wrong, I can't use Julia with jupyterlab?
Translation groupby and agg and join python to julia
How to plot a mirror graph from the one created
Correlation Matrix vs Contingency Table
Pointer error
How to edit row values of a dataframe column based on condition using query.jl
Error with Cairo and Fontconfig
Different results between Zygote, ForwardDiff, and ReverseDiff
Difficulties with parametric plots
Create a Package
How to use ForwardDiff with NLopt?
Error while simulating electrostatic problem for a multi-dielectric system using Gridap
Confused about Dimension Mismatch
Equality Constraint format in NLopt
How to use interior point algorithm in GLPK
Help speed up the function
ERROR: syntax: ssavalue with no def
CUDA doesn't work
Where is the graphics documentation
How to pass command line arguments to include("<julia file>")?
How to plot columns of a matrix on a single line graph in Julia
Parallelizing function returns no output
Most efficient way of adding elements within matrices in loops
Minimizing a numerical function
Simple Vector - UndefVar Error
How to realize this multithreading function
ForwardDiff evaluation of objective in Optim returns wrong result (objective uses DifferentialEquations pkg)
What does it mean x=-3:0.1:3?
Flow conservation constraint
On moderation and edits
Looped optimization model
Import package from python
YALMIP vs JuMP
Julia falling asleep during optimization (blackboxoptim)
Testing a package with runtests.jl does not generate graphical outputs
A usage about multi-dimension arrays
Function change
Pmap results in Array of type Any
A problem with SOCP constraint
Applicationerror: solver (gurobi) did not exit normally
Problem with trivial arithmetic
Performance of Dict
s=ArgParseSettings()
Julia stops unexpectedly (after 10 mins of use)
Logical processes remain active after my parallelized program ends
How to use the CSV.read? error "provide a valid sink argument"
Convert array to dictionary
AmplNLWriter, NLexpression, can't evaluate pow('(0,0.45),
How avoid this Warning when I use Contour
Trying to require Modules in a circular way, program just crashes
Is there a way to suppress "method overwritten" warnings?
Variable reference in a function created by a macro
ExcelReaders issue never happened before
Help Couenne
A problem with SOCP constraint
Slow runtime when assigning struct reference
Method Madness
Weave with PyPlot.jl
Getting different output for fft function in julia and matlab
CUDAnative support for Float16
Problem calling string parse + eval from C++
Iterating using Channel
Problems updating from JuMP 0.21.4 to 0.21.5
Import xlsx file
MWE - setindex bug?
MethodError
Unnecessary compilation happening on every call
Parameter estimation in mathematical models of common functions (sine, cos, exp and other special functions)
GLM: "no method matching fit"
GLM: "no method matching fit"
Rules when box/unbox applies
Gradient of a normal (NOT vector) function that has vector arguments
Read/write compressed files in julia 0.7
NLSolve vs fsolve (matlab): What am I doing wrong?
Scale is not defined
Get results from CBC solver for optimization
How to attach the result of Julia REPL? (using vim & tmux)
Large size of plot files generated using Plots.jl with GR backend
Include .jl file
Beginner: LoadError: InexactError: trunc..when convert dataframe
String Indexing - Alright, what am I missing?
syntax: missing last argument in "2:" range expression when using include("MyModule.jl")
Julia is slow questions - how to request information
If-else applied to a DataFrame
Library for (algebraically) complicated sums (and other expressions)?
How to use Dagger.jl's blocks to read a multifile NCDataset?
Optimizing a function with constraints in NLopt (want a different expression returned than optimized)
Use square brackets [] for indexing an Array
Initialise array without specific types
Mmap.mmap leaves the file open
How to replace macro argument with expr as being typed manually?
LoadError: MethodError: Cannot `convert` an object of type Array{Float64,2} to an object of type EasyFITS.FitsImage{Float64,2}
JuMP Error: "Unexpected object missing in nonlinear expression"
How to solve Ax=b, with A,x,b are matrix
Sortperm slow test case and fix suggestion
Constraint MINLP problem
Julia appending data to dataframe gives dataframe not defined
Delete rows that exist in another data frame in Julia?
Trouble creating a real-valued vector out of elements of multiple complex arrays
Plot, set a color to a smooth line?
Comparing Unequal Dictionaries
I need your Help!
Fast way to Implement a Loop
Inserting global list to a function, change the global list
Interesting problem with where parameters
Quantum Simulation in Julia
Simple way to save several variables
Delaration of an array with indexed type
SOS use on multidimensional arrays
Getvalue() help
Warmstarting variables does not work with Xpress
JuliaDB won't open CSV file
Running for loop in parallel and appending result to vector
MDPs simple program which:
help converting JuMPArray to regular array
StackOverflowError with julia v1.1 similar to previous bug v0.7
Error Travis Julia form GitHub Repository -- ERROR: KeyError: key "git-tree-sha1" not found
PyCall and ExcelReaders error
Got a looping of "warning: replacing module myModule"
Issue when Converting object of Type day to year
while loop unexpected behaviour (at least for me :) )
Writedlm gives wrong output
JuMP: filtering the output of JuMP.value.(x)
Large sum returns negative numbers in julia
Detection probability
How does setrounding work?
Speeding up a color transformation loop
Zygote.gradient(): Mutating arrays is not supported
Provide a specific argument to a specific function from a series of functions from command line
SymPy function with 2 variables
Non-allocating A / B where A and B are matrices
CPLEX - Setting branching priority
Deleting containerized constraints
How to sample a Data frame
OutOfMemoryError()_solved by sparse matrix
CAS benchmarks (Symbolics.jl and Maxima)
Modelling DFJ elminations constraints
Concatenating vectors
Animation fails in frame()
Indexing a const array with a JuMP variable
How to change the RHS for a set of constraints and solve the problem iteratively using JuMP?
Vector affine function with SOC not supported in JuMP (.18 -> .19 breaking change?)
How to extend SecondOrderODEProblem in DifferentialEquations.jl?
Numerical Accuracy of the Solver
Organizing code into functions—am I doing it right?
MethodError: no method matching -(::LinearAlgebra
Help with two Julia lines of code whose syntax is unclear to me
Type stability bug in compiler?
Iterative feedback and discussion on the pinned "make it easier to help you" topic
Error in ploting
JuMP - variable constraint depending on variable
How to write conditional expression using JuMP
Filter out the nonzero values in a dense axis array
Error type mismatch
Running into a deprecation while assigning variables and constraints in JuMP (v0.18.5) on Julia (0.7.0)
Strange deadlock in 1.7.0-beta3 didn't happen in 1.5.x
Parallel run in for loop
Map over namedtuple keys and values: confusing error
What wrong in cat ? Two simillar Arrays! ERROR: UndefRefError: access to undefined reference
Optim: MethodError: no method matching zero
Unusual slow Julia code compared to C++?
How does setrounding work?
Problem in @NLobjective
Steps to create additional table on matrix
Error in plotting the graph
How to use the iterator with strings with NamedTuple?
Error: function undefined
Entering xlsx columns into HypothosisTests
Ink package atom
GPU - CLArrays, GPUArrays - Extract a Matrix from an Array
Updating Julia has broken scatter plots
Getobjective does not return value of my objective function
Rand() doesn't work for NormalInverseGaussian
Getting this error Message MethodError: no method matching getindex(::DataFrame, ::String) but method is there (I m trying to do the kaggle dataset "https://www.kaggle.com/c/street-view-getting-started-with-julia/overview" )
ForwardDiff & mul!()
Comparison between time taken in Python and Julia
How to use "plotyy" for showing several sets of graphs in one plot
UndefVarError: ClpSolver not defined
Hi. Trying to add Julia to the PATH on my Mac Book Pro.
Cannot add StatsBase package, getting GitError
NLopt failed due to Forced Stop
Running in world age ... while current world is
Finding Julia packages
Best way to extract parts of arrays in a bigger array
Problem with SPICE package installation
Trouble importing a module that depends on another globally imported module
Scope when using multiple modules
Converting a Vector{float64} to float{64}
Images.jl not working with JuMP output in for loop
Can I get variable value during the optimization JuMP.value?
Predict fails for simple case of GLM?
Unable to optimize using Alpine.jl
How to solve large sparse LPs in Gurobi
Stackoverflow Error in plot of 3D data point
Is there Julia library for AI Image Denoising?
MethodError: no method matching -(::VariableRef, ::Nothing)
Problems with Diagonal from LinearAlgebra
How to convert CartesianIndex{N} values to Int64
How to read big data chunk by chunk(column-wise chunking)?
Dual{::ForwardDiff...} type error when JuMP tries autodiff User-defined Function
Error in Cuda function : ERROR: LoadError: CuError(1, nothing)
@formula for Lathe.preprocess UndefVarError
How to Calculate and Plot Fit Residuals from Numerical Integration to High Precision
If-else loop failure for a large array
Makie interaction: Slider with animation
Binary_reading
LP Warm Starts - using Gurobi with JuMP
Error in Array
Type NamedTuple has no field id
How can I use Zygote to get the gradient
Matrix multiplication with custom types
Mapping using GMT syntax
Any one can help me on this code
Couenne no results - seems stuck
Read and write/save 3-D image
CSV : problem to write big dataframes
Does julia has a Package designed to / for sparse matrix
Error with building NLexpression in JuMP 0.19.2
Function zero() with type"Any"
Using sparse matrix in NLoptimization
Function does not work as expected
"using" keyword in Julia
Unable to install Pyplot package
Multiple dimensional sampling with first element string
How to view which of your binary values are 1
Add incoming data to a DataFrame
Optim.jl is installed successfully, but "optimize" function is not inside, nor other functions!
Save animation with Luxor.jl
Help to set a penalty
Merging dictionaries indexed by elements of struct type
ERROR: [Turing] MH doesn't support vectorizing assume statement
Error in my code
Help with CSV and Dataframe
How to make EvoTrees.jl more performant?
Met a weird error; UndefVarError
Array{Float64}(undef, X) gives wrong results
Implement case_when in Queryverse
Basic writing to file question(s)
How to export Julia data to a .CSV
Output matrix in last (t-1) generation: normal; Indexing the same matrix in this generation: NaNs in the (t-1) column
Julia-Gumbo-webscraping
Program structure
Having problem with Convex.jl
Function defined as multidimensional integral
Importing modules that depend on modules
ArgumentError: no outer repetition count may be negative; got (-1,)
Why it is so slow to factor(BigInt) by Primes?
Creating custom indices (or Range?) from a set of arrays
Problem defining a Neural Network with gradient as Loss function
Face this run time error
Understanding how HTTP works
Base.getfield() gives warntype?
MethodError: no method matching isless(::Int64, ::Array{UnitRange{Int64},1})
Improving Performance of this Code
BoundsError
Simplify MINLP problem to speed up results
How can I implement this equation?
Solve many first-order ODEs
Output in VSCode
BoundsError when solving non linear system of equations
MethodError: no method matching similar_array_type
Error installing ImageView Library
Help with gradient
How would I convert the key value pairs of an accumulator data structure to a dataframe
Declare two exceptions in an equation
Shared definitions across modules
Glitch with readline() in VSCode?
Gsub function in Julia
Trouble with @eval with mixed variable scopes
Calculating a standardization function from scratch
I do not understand this error: MethodError: no method matching iterate(::DataFrame)
How can I plot a choropleth map from a dataframe?
Arrays, Matrix, append!
Warning for adding constraints: zero or small (< 1e-13) coefficients, ignored
Restoration phase failed
Linear programming with Jump
Kmeans problem
The error of using GLPKMathProgInterface pkg
ERROR: LoadError: UndefRefError: access to undefined reference
Why "Threads.@threads for " doesn't use all possible threads?
How can I add a legend
Nested optimization - matrix multiplication and internal functions
ArgumentError y = [y;df[:,Symbol(v)]]
How to add norm of gradient to a loss function?
Zygote gradient Error
How to set @variable(m, tau[1:N] >0 ) with JuMP
How to solve this problem with T
Channels and Conditions: How to do notify channel is ready
Turing.jl run not reproducible!
Populate a Dataframe from an array
Pca question
Running simulations over range of parameters
Opening and reading text: why does Julia insert many "\"
Debugging of julia modules lead to errors while evaluating not
Array variable - matrix multplication in JuMP
Initializing a dataframe
Running Julia script with predefined environment
Starting Julia with a few tasks
DataFrame vs. Pandas (vs. Excel...), e.g. to refer to previous row
DataFrame vs. Pandas (vs. Excel...), e.g. to refer to previous row
Training Neural SDEs with Mutating Arrays
I want to implement a normal log in julia and i'm new in and don't know how to do it
Memory Allocation JuMP constraint!
Gadfly label coloring
Writing data to csv
Problem in attaching array type in struct
Segmentation fault when trying to make a custom sysimage
Moving from LMI toolbox (Matlab) to JuliaOpt
Get One-On-One Help
Broadcast hangs after successful execution over all array elements
Garbage collection
Why does Julia think a vector is a string?
MethodError: no method matching getindex(::Nothing, ::String)
Problem Lambdifying atan function
Simulated annealing Algorithm
Polynomial problem-help me please
Converting from Shell to Julia
Save figures as pdf
Need help writing some recursive code please! Full code explanation and snapshot included
Stochastic simulation error
New to Jump and Julia
Trouble plotting grouped data (VegaLite.jl)
Why does Julia think a vector is a string?
AMDGPUBackend is missing
Question about my Pkg
ERROR: LoadError: LoadError: UndefVarError: n_actions not defined
Clear variable?
Point wise operations on array of vectors
Love Julia, but..... Type hierarchy is frustrating
How to uninstall properly Julia under Unbuntu 14.04 LTS
Using Flux to optimize a function of the Singular Values
Problem with Mutating array not supported in constructing a Wasserstein GAN in Flux
Cleaning information to solve multiple instances of a JuMP model
LinearMap : error while running LinearMap
PyError. Can't use ExcelReaders
Data Collection Issue With Julia Agents
Regex numeric range generator
The conflict of variables using @build_constraint
On OS X Catalina, running 'solve' in DifferentialEquations causes crash
Plotting Trouble and GR
Turn code into function
Making @benchmark outputs statistically meaningful, and actionable
Undefined /out of scope
Undefined /out of scope
"plot not defined" and / or "twinx not defined"
Error Unsatisfiable requirements detected for package ZMQ [c2297ded] when adding new packages
Made Julia quit and now won't run even after re-install
Can't install Gadfly - unsatisfiable requirements detected
CUDA on Julia 1.7 giving wrong results
Topology optimization in gridap for structural problem
How to plot and save figure, by running code on unix server
Parallel computing of matrix with @threads
Changing the z-scale in plots3d
JuMP conditional constraint
How to export this type of vector
List comprehension of JuMP variables
LMI, Control system, Robust Control Adaptive Controller
Avoid allocating an anonymous function
I am new to Julia, could someone help me to check the code?
Not sure how to get this LsqFit working
User-defined objective function with scalar and vector inputs
How to add text to a rendering?
Homework policy
Optimization with Optim gives different results each time
Plots.jl how to create a heat map from several curves
Where to find tutors for Julia?
Can not choose alg for lyapunovspectrum DynamicalSystems.jl
Modify FASTQ file description with a new string using FASTX
Reduce and sum Value ( frequency matrix)
Variables declaration in JuliaPro 1.5.2-1
Delay in processing
"for" loop, collect()
Plotting interaction from a fixed effects panel model
Weave won't convert a tex to pdf, because it says the directory is not empty
ForwardDiff with function using broadcasting
Readtable function
Help with macro to construct truth tables
How does Julia merge several exprs to one expr?
Intersect of 2 arrays
Evaluation into the closed module `__anon__` breaks incremental compilation because the side effects will not be permanent
How do I write @variable(z=x[1]+x[2])?
Query root relaxation values with JuMP
Slider of a point in a graph
Bridging Slack's #Helpdesk and Discourse (Proposal, feedback welcome!)
Alternative to computation in a loop for distances for fast performance
Rules when box/unbox applies
Computing Flux.gradient change the model
Three state variable
How to export `Base:@kwdef`?
Vector function representation
Converting CSV string values to floats (Python to Julia)
How do I distribute Mamba mcmc function iterations on different processors?
Jupyter Won't Spawn ENOENT, unable to export pdf
Plotting implicit functions
@everywhere and Dictionaries
No method matching iterate(::XLSX.Worksheet)
How to attach the result of Julia REPL? (using vim & tmux)
JLD load error for Dict
Set_start_value in JuMP for SCIP
Change default JULIA Path Manually in Ubuntu
Contents of the function run well when timed alone, but not when they are in a loop inside the function
Julia code for 1-D discrete system
Plotting broken? Gadfly and Plots backends not showing axis ticks, can't plot DataFrames
Using Julia to solve semidefinite programming problem that has vector solutions
Optimizer returns status infeasible for a feasible problem
Colon / Ranges
Increase performance in string comparison with sub-dataframes or sub-arrays
Animating 10 steps
How can I use optim.jl to find some values
Which solver/model library can be used recursively / reentrantly
Update design parameter in TO
Bug in julia zeros() side effects
Local arrays in for loops
Flux unroll
MOSEK fatal error stopenv
RNN Not learning
Optim - provide gradient with fixed parameters
Gurobi constraint
NLopt not optimising
Model Predictive Controller only works for certain values
Error while trying to download the Distributions Package on JuliaPro
No method matching zero(::Type{Array{Float64,2}})
About the interpretation "@" by Macro
Performance of log in nonlinear optimization
I can't load RDatasets in Julia
Julia not able to convert Array to a series data for plotting
Julia Complex Exponential Evaluation vs Matlab
Makie Observables
Mutate Zygote Gradients with a Custom Mask Before Update?
UDP receive and send with julia
Speed up matrix multiplication with permuted vector
Gurobi with StochasticPrograms.jl
How does Pluto decide what to show graphically?
Vcat and plot behavior inside Julia script
Precompiling most packages fails in Atom/Juno with 1.6.0
Solved - (cairomakie) Saving 2 figures - but one figure is saved twice
How to record the optimization process when using the JuMP optimization package for optimization
Maximize Min Objective
Indexing vector elements of a matrix
How can loop through a image folder?
Disassociate parameter or variable from a model in JuMP
Finding all rows that are the same as a "focus" row
Mutlithread functions within for loop
Error when attempting to load Franklin pkg
The plot command moves the graph
Printing zero elements in lines of a sparse matrix
CBC solver
Plot data on Map with GMT.jl
Incoherence between exact and finite differences Jacobian
What is meaning of M1, rpath?
Constraint declaration generates an error
How to use pmap with DrWatson
Use a String For a Variable name and convert Dictionaries to DataFrames
Jacobian matrix
Layout pv panel optimization
How to add a constraint with neural network in a JuMP (PowerModels) model
Handling of package inter-dependency
Lasso Regression of Matrix of Vectors
Change the constraints name iteratively to JUMP model
Optimization with JuMP and KNITRO
Problem with lyap(Q,R)
Using CSV.read() to import data from a data input file into a DataFrame
Quadratic Expression in JuMP
Using Loop
Surface command in Julia
Strange nan errors when mutating immutable struct arrays
Static Arrays Memory & Allocations
DifferentialEquationsjl with ForwardDiff.jl
How to convert a multivariable polynomial with integer coefficients to one with Float64 coefficients?
Solve(ode, Tsit5()) throws "Possible method error" in VS Code
Confusing dimension mismatch error
Getting NaN output from JuMP variable after solving
Best way to define a set of differential equations?
Using ```set_state```?
Memcpy in julia
Get a picture icon when I try to plot a histogram
Questions about Polyester.jl
How do I have to read an unknown number of floats in binary data till EOF?
Found Bug in Flux
Problem with implementing the objective function with minimum and maximum functions simultaneously!
Parallelization of Sum in JuMP
Cholesky simple example
Struct initialization error
How can I transform this matlab code into Julia
Model improvement
Converting Missing to Date
Julia Manual GMM
Apply some functions to columns of a dataframe
TypeError: in typeassert in Julia 1.6.3
Dummy variable change optimization result
Cannot use the Collections module
Solving MPC using JuMP and Gurobi
What does 1.8 in the following prediction depicts?
Problems on Flux.destructure()
A question about Distances.jl
"contains" as operator?
Appending rows to a dataframe is seemingly inconsistent and confusing
The impact of different ways of passing parameters on the speed of function computation
Optimizing function with vector reassignments
A issue to use PythonCall to call a Simple Python File Of WxPython Hello World
Color channel
Updating an old model and running into deprecation and getting errors I have fixed a lot, tic toc problem here what is the best solution to replace?
A problem with JuMP Tutorial-linear problem-cannery problem
Julia CSV.read stopped working
Access each element in the broadcast operation
How to embed Linkedin page in franklin.jl made website?
Organize the output of a mathematical model
Help to correct this code please
Return of split
State space feedback
Simple Linear Regression: Domain Error with 0.0
Problem with Plots
Buffer in running external program in loops
Julia plot representing error
Two stage stochastic
How to find Shadow Price in JuMP
Dependencies "4 skipped during auto due to previous errors"
Can we find a DDe's canstant from a table
Use CPLEX solver in JuMP
What constitutes a good post here?
How to control type conversion from python to julia
Unexpected change of a function argument (array) - bug or feature?
`ReadOnlyMemoryError` in PyCall
Dynare - "LoadError: InexactError: Int64(NaN)" for the simplest model
Topology optimization using NLopt
Regarding use of Max in Jump code
Converting Dense Axis array results into dataframe
Performance slowdown on AMD with Windows10 compared to Intel with Linux (arch)
Radial Basis interpolation multivariable
Clustering.jl Silhouettes Distances
Defining constraint using JuMP convert String to Expression and Merge Quart Expr and nonlinear Expr
Nlsolve for find root for a system of ODE for an implicit runge kutta method
Nonlinear solver other than IPOPT
Percentages in pie plot
Matrix Constraints in JuMP
Instances for type
How to write a constraint Julia-jump
Parallel Computing with Threads.@threads in HPC is slow?
How to convert fmpq to Int
MultivariateStats (PCA)
UndefVarError: DataLoader not defined
Help to plot a surface plot with infinite roots?
PyMNE for julia
Can't solve a problem with nonlinear terms like x^0.7 or x^3 using JuMP with Gurobi 11
What range of LinearAlgebra does Enzyme support?
LoadError: UndefVarError: `@threads` not defined in `Main`
What is sympy (python) equivalent differentiation method in Julia?
Unable to install CUDA - problem with CUDA_runtime package on HPC system
Another question on eachoverlap in GenomicFeatures.jl
Save and restore namespace
How to solve this error? About Pkg.jl and Plots.jl
Plot exponential fit
Type compare
How to convert code from python to julia. the magic squares
Franklin.jl website generated on Github is much different than what i created on Local system
Adding Package
Makie app from command line
Shapefiles to GEE
Assigning matrices
Minimizing a logsumexp function with many terms (Convex.jl)
Julia multiprocessing
MethodError: no method matching Float32(::RGB{N0f8})
Pkg.add("ImageView") fails on Win 32 bit system for V1.6 V1.8 V1.9
How to address an error?
Functions with Strings
Bushes instead of text
MethodError: Cannot `convert` an object of type Missing to an object of type Float64
Types and Memory allocation in the operation of Vector{Matrix{ComplexF64}}
UndefVarError: HierarchicalClustering not defined
Distributed.ProcessExitedException Error in Pluto
Is there a reliable package for solving simple equation system?
What is causing this undefined variable Error message
New to julia : ldapclient output format
I want it all, and I want it now.... debugging Julia code
Assigning value from a matrix to a dictionary with key as pairs(i,j)
Have an strange error creating optimization subproblems on Julia
Higher derivative gives NAN
How to hide output from an optimizer?
Higher derivative gives NAN
Copy of Image
How can I make this correlation plot?
Issues when using multiple threads through Threads.@threads
Is Julia Falling Behind in Relevance? (because it's not used in LLM research?)
Observe: no window created; process returns to prompt with no visible UI.Need Assistance on Ui visibility on my julia code
Collect_cell_matrix error
Rename column if its name matches to a name in given list
General comments on my code for filling a matrix
Scope of variables in Pluto
Problem in integrating Agents.jl and DifferentialEquations.jl
Error in running julia file
I wanted to generate a contour plot for 2D heat conduction by neural PDE but this code generates blank plot without any contour
Dataframes
Why Julia - A Manifesto
Issue with BigFloat rounding
Tullio broadcasting issue
ArgumentError: u names not unique. Repeated names:
Multivariate normal distribution?
Bounds Error In code
Pivoting results
Multivariate polynomial with symbolic values
Upper boundary for dispatch in Julia
'Sol' not defined upon opening Julia?
Slow array access during labeling algorithm
Function and no method matching
Error while using Optimization.jl
Function definition inside let-block impacting performance?
Stipples using voronoi plot
How can `sleep(0.001)` error?
QuantumOptics.jl time-dependent Hamiltonian cannot run
Problem with Gamma function
How to broadcast for 3d-array?
Python map_coordinates() equivalent in Julia
Complex SDEs + Sparse operations + real Wiener noise
ERROR: LoadError: MethodError: no method matching isnan(::Py)
Problem with numerical data in Arrow.jl
Kullback-Leibler divergence for vector and normal distribution
Why step function doesn't recognise local model initialisation inside a function?
Code in the documentation is not working
Python map_coordinates() equivalent in Julia
CondaPkg installation errors
Sort values on the y-axis from smallest to largest
Readline() doesn't work on VS Code
Bouncing Ball Example
UndefVarError Main.xxx issue
Dynare perfect foresight simulation - how do I access solution to endogenous variables?
How to use perfect foresight in Dynare Julia
Alert! Error while slicing
Power flow balance, active and reactive power, losses in Julia
CUDA performing scalar indexing when used along with Distributed
Need help using ForwardDiff gradient with numerical loop
Why can't I catch the following error?
Plots.jl - Plot groups of data on different subplots
Agents.jl: OpenStreetMaps example of zombie outbreak not running
Segfault using Flux + Intel integrated GPU
This used to work (Tk, Image, ImageView)
Default Real (Float) kind?
Unpredictable Compilation Performance of MTK-Generated Functions
Need assistance PowerModelDistribution. jl
Code Generation
Problems with julia web page
Matrix Dimension mismatch
Optim.jl: bracketing with Newton()
Use of variable in Julia REPL
Coalesce function not working with data frames n x n with n>=2
Optimisation design advice - metaprogramming/closures
Use of std function in Statistics
Julia plot not saved properly
For loop error
Task termination
How to fill dataframe from an array and date range?
Reading complex text files with vectors
How to self reference a struct
Difference in sparsity pattern caused by @NLconstraint and @constraint in JuMP
Optim constrained optimization issues
Is there @code_warntype output documentation anywhere?
ANN: DynamicHMC 2.0
For loop Performance
[ANN] Write Excel files with XLSX.jl v0.2.0
Multiple amount of summations in JuMP
Type FPFunctionalCache has no field caches error
Restrict type of value type parameter
Solving system of equations
Lack of performances in Flux MLP
Trouble with hosting. What am I doing wrong?
Hello guys! i'm new can pls tell me the things I need to know
Julia-Gumbo-webscraping
LoadError: ArgumentError
Understanding mutating functions correctly
Fast calculation of eigenvalues
How to delete the number of lines plotted in the graph
Getting error while using CurricularAnalytics
How to use ForwardDiff.GradientConfig for multiple input functions while calculating gradients in parallel
Test the new wiki posts. Edit me
Loops "for" and "while" in JuMP
Please help me with my optimal power flow problem
Sorting a sparse axis array in JuMP
User's input
Code execution problem
Save Array of Arrays in HDF5
Bounds error for MINST training
Unusual Error in Julia
Julia: from total beginner to power user (youtube channel)
@timed to plot the time and memory consumption
Getting output after solver timeout reached
Converting array to a vector
How can I plot a choropleth map from a dataframe?
The error of using GLPKMathProgInterface pkg
Warning for adding constraints: zero or small (< 1e-13) coefficients, ignored
Specifying StaticArray Types
Voronoi cell index identification based on point(x,y) position
Pde heat diffusion solution
Binaries made by PackageCompiler.jl hangs while maxing out RAM
I wanted to plot Graphs in Jullia (IntellijIdea)
I have no idea what's wrong. Please help! ERROR: UndefVarError: i not defined
BitArray{3} mesh
Updating a plot
Entrys with Gtk
A newbie can not use CUDA by follow official DOC!
Deferred-shape arrays
How can i Decode this Data?
A question about Atom/Julia
Warning, invalid warm-start basis discarded
Method works in REPL; can't use in a function body
Modules and files
A implementation of ResNet-18 uses lot of GPU memory
Stipple error in German credit demo
Question regarding COSMO Convergence
Using multiple dispatch with parametric constructors produces ambiguous call
Not able to run Julia through Flask-Celery
MLJFlux is a lot slower than the same algorithm written in Flux
Batch size and early stopping in Flux
Naming conventions for structs and constructors
How to store all in Julia
Parrallel programming
Histogram Equalization
How do I speed this up?
Julia can't precompile various packages
List comprehension in Zygote
Readdlm command issue
Numerical integration over 3D domain of vector-valued function
Different plotly behavour across computers
Conv_mnist model-zoo example,
Its possible to use all cores or parallel cores to do some project/calculations?
Slow and Memory intensive For Loop
Good examples of posts asking questions
UndefVarError: ncounter
Which optimization package should I use?
Pde heat diffusion solution
“using” expression not at top level
ForwardDiff: Error ForwardDiff.Tag How to transform a Dual Type to a Float
Differences in MATLAB's versus Julia's beta(x, y) for large x or y?
Sorting a matrix according to a matrix of column-wise sorted indices
How to pass on kwargs? - updated
Its possible to use all cores or parallel cores to do some project/calculations?
CairoMakie returning empty plots
Searchsortedfirst `by` argument not working?
Rolling (time) average of a timeseries of images
How to deal with Julia Out of memory problem
Path Environments
Plots: bars side by side
Why no canvas popping up with Plots
Package install
Meta-programming an if-else statement of user-defined length
On moderation and edits
Mesh3D Only Plotting Half
L-BFGS returns a NaN gradient when providing analytical gradient. BFGS shows no issues
JuMP optimization problem
Reading text or csv files and assigning values to variable names
Concatenating vectors of different length into a dataframe or table
Binary classification with Flux
How to improve runtime with measurements.jl?
Iterative feedback and discussion on the pinned "make it easier to help you" topic
Using Julia to solve the student final project allocation problem
How to use ∂ function in my code or how to compute the mixed second-order partial derivatives or first-order cross partial derivatives of the velocity field **u**?
Autograd in Flux
Linear regression from scratch using QR decomposition
DifferentialEquations.jl: Complex function results in Inexact Error
Iterating over row in a DataFrame
Threads, @spawn on Mac - inconsistent behavior
Simple Linear Regression: Domain Error with 0.0
How to avoid supplying exact types in a Dict constructor?
Linearization
Indexes and multidimensional arrays
BoundsError: attempt to access 5×100 Array{Float32,2} at index [[0, 5, … 490, 495]]
BoundsError on Bayesian ODE model with Turing
Changes of A.jl are not understood from B.jl that includes A.jl
Tricky interpolation issue
I don't understand why it is slower with CuStaticSharedArray
Julia contour lines issue
Unexpected ERROR: UndefVarError: a not defined
No method matching loss_multiple_shooting
Missing data
Multithread on JuMP for Benders cut
I have problem with sampling Frequency when I use ACME.jl
UDP receive and send with julia
Pwd() cd() and I/O text for open files from pc
Error installing packages: could not spawn setenv(`lld -flavor gnu`)
How to write matrix data to Excel in separate worksheets?
How to parallelize within a function
@time and @benchmark give different results
Layout pv panel optimization
Wondering Why the Variable is Not Used
Handling of package inter-dependency
Using Loop
Using variable names to parse DataFrame
Julia sum issue
Parallel computing with *
Mesh grid in Julia
ODE with vector Argument
Indirect Connected vertices in a digraph
LinearAlgebra: rank
Coding up basic power flow equation
[SOLVED] Unexpected dispatch behavior
Makie Animation
Infeasible or unbounded model
Why is this code wrong?
Using Debugger in Julia 1.6.3
How to get rid of the straight line?
Using JuMP to solve the heat equation - performance tips requested
Local infeasibility, Ipopt
Problem using ```lyapunov spectrum```
Reading binary data from a file
Why doesn't method dispatch work on the same candidate included from different sources?
Make "Please read" post a pop up in new threads
Accuracy issues on Flux
How to use the solver-dependent callback
How to load a portion of image dataset
How to embed Linkedin page in franklin.jl made website?
Nonlinear Optimization with Many Constraints + Autodifferentiation: Which Julia Solution?
Error on installation packages
NLP is not solving in ubuntu OS whereas It is solving in Windows OS with all versions of package and Julia is same (Juniper optimzer with Ipopt and HiGHS)
Compute gradient of gradient norm using zygote
Ploting data
GLMakie - Connecting a Slider to update images in an axis
Julia manual evaluates the expression. Why does it report an error when I run it myself?
Defining constraint using JuMP convert String to Expression and Merge Quart Expr and nonlinear Expr
Converting PyTorch to Flux while keeping performance
Interactive boxplot with GLMakie
Issues with abm visualization
Nlsolve for find root for a system of ODE for an implicit runge kutta method
Complementarity.jl supports equality constraints?
Error message when using AoG/Makie with "yscale=log10", for my particular data
Parallel programming loops
Using CellListMap.jl within Agents.jl framework
How to make a model applicable to Turing.jl?
NCDatasets: performance issues deriving fast Minimum Maximum value as too slow
Errors in inference in upgraded Julia version (1.6.3 vs. 1.7.3)
Finding Derivative of 2 arrays of numbers Using Zygote
Error in .julia$cmd(paste0(Rhomeset, "Base.include(Main,\"", system.file("julia/setup.jl",
Debugging an anonymous function passed to DynamicalSystems
Replicate Python code in Julia
Question about the usage of julia
Bounds error while iterating over for loop
Multivariate nonlinear constrained optimization using JuMP and ForwardDiff (Automatic Differentiation)
How to implement custom image dataset for cnn in Julia Flux?
BoundsError for J2Plasticity
Help on Lotka Voltera model Parameter Estimation
Julia pmap how to write each worker into separate index using parallel computing
My model can't be transfered to gpu. Adapt.jl problem?
I Need help with DiffEqFlux
MTH229 integration problem question
Constraint declaration
UniformScaling Array problem
Encouraging clearer questions on discourse?
Encouraging clearer questions on discourse?
Hello if you have time can you please look at my code , i am finding this error ArgumentError: invalid index: 0.0 of type Float64 i would really appreciate thanks
Julia is not using my local OpenMPI installation but asks to install MPICH
The issues of frequent recompilation and low computational efficiency in ITensor.jl
Changes in for-loop don't apply outside loop
Calculate the strain and stress from CSV file
Julia academy data science tutorial
Job shop scheduling
Why does GLM.jl fail to fit my logistic regression model but scikit learn and R has no issues? I think I found the reason
Drop in performance after saving data with jldsave
Help with ::
Julia Surface or Non-Square Heatmap Plots with Spesific Function
Zygote Warning within FluxOptTools - 'cannot track gradients'
Topology optimization in gridap for structural problem
Element by element wise multiplication and addition/subtraction of 3d matrices
Is there a way to speed up this code?
Speeding up the multiplying, adding, subtracting of 3D matrices
DifferentialEquation solvers not giving desired output
Help with speeding up this code
Fatal: error thrown and no exception handler available for a * method
What steps should the Julia community take to bring Julia to the next level of popularity?
Internal Error: UndefVarError: `includet` not defined
Dataframes
Issues in running tests while exporting struct
Plotting data showing 2 sets of data
Out of Memory Sparse Matrix
AWS and sign_aws4 request made with HTTP
How can I extend a GridPosition?
Tuple related error
Problem installing Plots.jl (a FFMPEG issue)
Undefined variable error in Julia: UndefVarError:castnot defined
Lux (And Flux), "parallel" Network Input. When Input is flat, Zygote gradient works, when input is not flat it doesn't
Fatal Python error when running Julia on mac m1 VS Code
Section for 'tutorial' style posts?
Zlib error
BigFloat type
Lambda Systems
NaN Values for j > 1700 in Quantum Fisher Information Calculation using QuantumOptics
Mesh 3D Creation
Encountering Method error when using abs2 function on a Complex{Num}
Project for Intermediates - Advance
Yellow Question Marks When Precompiling
Makie/CairoMakie custom colorbar ticks (> and <)
Question about the syntax of the @constraint command
Alert! Error while slicing
2D stationary diffusion problem & (?) MethodOfLines
Gurobi fails to precompile
Convert string to equation (fast)
UndefVarError: orientation not defined
Interactive change of mesh plot
Unsafe_wrap perform memory allocations
Scheduler errors when trying to graph agents
Julia SEGFAULT debian
Strange plotting problem with Makie figures
Blink GUI closes immediately after wait(w) when launched via PyJulia
Plot of a function from x=0 to x=1 is not shown
Animation stopped working
Modelling caffeïne effect on alertness in humans with Catalyst
Crash of eigenvalues calculations with arpack
Issues with librsvg-2-2.dll on Windows 11
Loading an image in place
Optimization problem
Need assistance PowerModelDistribution. jl
ML feature importance in julia
Const FileData = AbstractVector{UInt8}
Confusion on DifferentialEquations.jl. How many saved timesteps
Kernel Compilation error- KernelError: recursion is currently not supported
Iterative feedback and discussion on the pinned "make it easier to help you" topic