JuliaData/DataFrames.jl

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In-memory tabular data in Julia

Stars: 1.8k
Forks: 372
Open beginner issues: 0
Indexed issues: 147
Avg merge: 5d 7h
Merged PRs (30d): 5

Dominant language: Julia
License: No license data
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 18, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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147 open issues indexed

Update datastructures to include 2? Open

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

JuliaData/DataFrames.jl#3541 · Opened Jul 25, 2026
Categorical Data documentation is missing data frame usage examples Open

question

Difficulty 1/5 1-3 hours Newbie friendliness 68/100

JuliaData/DataFrames.jl#3535 · 13 comments · Opened Jun 1, 2026
Dataframe Dimensions with Comma- Thousand Separator Open

display

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

JuliaData/DataFrames.jl#3499 · 3 comments · Opened May 29, 2025
Creating DataFrames from Dicts does not work as Expected Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3495 · 8 comments · Opened Mar 28, 2025
Occasional `ConcurrencyViolationError` on Julia v1.12 Open

ecosystem

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3494 · 3 comments · Opened Mar 22, 2025
DataFrame-output in Jupyter as LaTeX breaks PDF-rendering via Typst Open

display

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3493 · 1 reaction · Opened Mar 21, 2025
Add `Before` for column selection Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3491 · Opened Feb 19, 2025
transform(df, :symbolname => AsTable) will not work for JSON data Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3490 · 12 comments · Opened Feb 18, 2025
Problem in converting FITS file tables to DataFrames Open

bug ecosystem

Difficulty 4/5 3-5 days Newbie friendliness 30/100

JuliaData/DataFrames.jl#3489 · 4 comments · Opened Feb 14, 2025
Stack overflow when compiling sysimage Open

bug ecosystem

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaData/DataFrames.jl#3484 · 6 comments · Opened Jan 3, 2025
Feature Request: Automatic saving of metadata with arrow files Open

ecosystem

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3480 · 2 comments · Opened Nov 28, 2024
SQL interface to DataFrame? Open

feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3479 · 2 comments · Opened Nov 22, 2024
Feature request: Group data frames to accept string or symbol as index when grouping is by a single attribute Open

decision

Difficulty 3/5 1-2 days Newbie friendliness 38/100

JuliaData/DataFrames.jl#3470 · 5 comments · Opened Sep 28, 2024
Feature request: for metadata! to accept a dictionary as input Open

question

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

JuliaData/DataFrames.jl#3469 · 4 comments · Opened Sep 27, 2024
Possible feature: Improved indexing for GroupedDataFrames Open

decision

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaData/DataFrames.jl#3468 · 1 reaction · Opened Sep 20, 2024
performance of `median` and `iqr` compared to python libraries Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3462 · 5 comments · Opened Sep 5, 2024
join size warnings Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaData/DataFrames.jl#3455 · Opened Aug 13, 2024
Add arbitrary matching function for joins Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3445 · 3 comments · Opened Jul 6, 2024
Column types seem to change after inner-join between two DataFrames Open

question

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaData/DataFrames.jl#3442 · 1 comment · Opened May 23, 2024
Add options to `join` missing error? Open

doc feature

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

JuliaData/DataFrames.jl#3441 · 1 comment · Opened May 22, 2024
Sampling GroupedDataFrames (rand) Open

question

JuliaData/DataFrames.jl#3437 · 5 comments · 1 assignee · Opened Apr 17, 2024
Consider removing Tables.allocatecolumn in vcat Open

feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3432 · Opened Mar 23, 2024
Suggestion - Matrix Syntax for hcat (as well as vcat) Open

decision

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaData/DataFrames.jl#3429 · 4 comments · Opened Mar 8, 2024
Integer strings as colnames/selectors are error prone Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3428 · 2 comments · Opened Mar 7, 2024
Feature request: Pairs in stack Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaData/DataFrames.jl#3423 · 2 comments · Opened Jan 26, 2024
Add comparison function for dataframes which can handle both isapprox and isequal column types Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3417 · 2 comments · Opened Jan 15, 2024
Revisit spreading for `AsTable` output` Open

question

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaData/DataFrames.jl#3408 · 7 comments · Opened Dec 13, 2023
Add rename!(::DataFrame, ::Pair{Regex, SubstitutionString}) method Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3403 · Opened Nov 13, 2023
DF description/missing color is unreadable on dark themes Open

display

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3400 · 44 comments · Opened Nov 8, 2023
feature request: allow `skipmissing` column types Open

question

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaData/DataFrames.jl#3398 · 3 comments · Opened Nov 5, 2023
ggplot2 has added an `after_stat` Open

decision

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaData/DataFrames.jl#3396 · Opened Oct 23, 2023
Allow adding columns to DataFrameRow just like to SubDataFrame Open

feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3390 · 1 comment · Opened Oct 18, 2023
feature request: `shift` Open

decision feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3388 · 2 comments · Opened Oct 16, 2023
Column unioning when appending data Open

feature

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaData/DataFrames.jl#3382 · 4 comments · Opened Oct 1, 2023
show in html is a bit hard to read Open

display

JuliaData/DataFrames.jl#3378 · 10 comments · 1 assignee · Opened Sep 8, 2023
expression functors (in particular: `over`) Open

feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3377 · 14 comments · Opened Sep 6, 2023
append! fails when a column references another Open

decision priority

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3376 · 13 comments · Opened Sep 4, 2023
Initializing Dataframe from vector of named tuples: missing values Open

decision

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaData/DataFrames.jl#3370 · 6 comments · Opened Aug 15, 2023
Question about usage of cores and db-benchmark performance Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3368 · 3 comments · Opened Aug 9, 2023
Feature Request: Transformation in "on" keyboard when joining dataframes Open

feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaData/DataFrames.jl#3363 · 4 comments · Opened Jul 27, 2023
testdataframesjl.readthedocs.io ? Open

doc

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

JuliaData/DataFrames.jl#3354 · 2 comments · Opened Jul 3, 2023
vcat without copy Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3336 · 3 comments · Opened May 24, 2023
add sotring support for `unstack` Open

reshaping

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaData/DataFrames.jl#3334 · 1 comment · Opened May 19, 2023
Improve performance of groupby when there are many small groups Open

grouping

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaData/DataFrames.jl#3331 · Opened May 15, 2023
Simplify computation of grouped minimum while handling missing values Open

decision

Difficulty 4/5 3-5 days Newbie friendliness 38/100

JuliaData/DataFrames.jl#3328 · 5 comments · Opened May 10, 2023
Allow transform to use columns it creates Open

decision

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaData/DataFrames.jl#3327 · 1 comment · Opened May 10, 2023
dropmissing! fails when one column in DataFrame is of type bitvector Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

JuliaData/DataFrames.jl#3300 · 1 comment · Opened Mar 13, 2023
Storing display settings in Preferences.jl Open

display

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaData/DataFrames.jl#3286 · 5 comments · Opened Feb 7, 2023
Scope for performance improvement of outerjoin when `on` is sorted? Open

joins

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaData/DataFrames.jl#3270 · 1 comment · Opened Jan 15, 2023
add multithreaded join algorithms Open

joins performance

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaData/DataFrames.jl#3255 · 4 comments · Opened Dec 23, 2022

JuliaData/DataFrames.jl

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