R Observatory: Metrics for lt version 0.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

lt

0.5Package record

Lightweight Tables via JSON Specs and JavaScript

1packages dependsuggested by 1

1.5Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Yihui XieCRAN page ↗GitHub ↗Issues ↗

A lightweight grammar of tables. Build a table by declaring a JSON spec (titles, spanners, row groups, footnotes, formatting functions, etc.); a tiny vanilla JavaScript runtime builds the HTML table from the spec on page load. Cells can hold inline plots (error bars, dot plots, mini line and bar charts) drawn as SVG in the browser from the numbers alone. Tables can optionally be made interactive (sorting, searching, filtering, pagination, column hiding, expandable row detail, and CSV download) via a separate extension loaded only when requested. No 'sass', no 'V8', no 'htmlwidgets' — just base R and 'xfun' ('htmltools' is used only for the optional Shiny binding and for embedding tables in other HTML output).

Changes in 0.5

Added lt_interactive() to make a table interactive in the browser: click-to-sort headers, a search box, per-column filters (plain, or typed dropdown/range/checklist widgets), pagination, column resizing, a column-visibility menu, expandable row detail, and a CSV download of the current view. Everything runs client-side via an extension loaded only for opted-in tables, and sorting and filtering stay within each row group or subtree.
Added lt_errorbar(), lt_sparkline(), and lt_dotplot() to draw lightweight inline plots (error bars, line/bar sparklines, dot plots) in table cells: only the numbers travel to the client and the SVG is drawn in the browser.
Interactive tables expose a controller el._lt for driving filters and row detail from external widgets, plus LT.ui helpers (popover(), checklist(), chip()) and a new LT.render(el, spec) for building such widgets and on-demand tables.
Column selection now accepts predicate formulas referencing the pronoun . (the column names), e.g. ~ endsWith(., "_time"), in all functions that select columns.
lt_label() now also accepts a named list or vector mapping column names to labels.
Added lt_wrap() to set HTML attributes on the .lt-wrap container, a hook for scoping custom CSS or sizing a table.
lt_spanner() no longer requires its columns in visual order; they are reordered to match the body before rendering (they must still be contiguous).
lt_export() no longer drops a lt_css() stylesheet attached by a relative path (thanks, @tgerke, #7).
lt_export() no longer spills a cropped PDF onto a second page when the table height is fractional.

From NEWS.md in the release

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("lt", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("yihui/lt")

Development version from yihui/lt. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-lt

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-lt

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-lt

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

Additional issues

M1mac

CRAN check page ↗

Slowest check: 1.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK6 OK2026-07-01

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.5

READMEYes · 949 wordsVignettesNoNEWSYes · 100% structured · mentions 0.5Citation fileNo

Help pages: 32 (2 internal)includes a package overview page
Examples that run: 100%30 run in a plain check (2 of them under a condition)
Exported functions with examples: 97%
Documented parameters: 98%
Return-value docs: 97%
Help pages citing references: 0%

How these are measured

Downloads

1.5K

CRAN downloads in the past year

Rank #6,228 · ~4/day · ~129/mo

Releases R versions

Daily download trend is not available in this view yet.

53630 days

1.3K90 days

1.5K1 year

Compare downloads with other packages →

Also on119 r2u4 autocran

How downloads are counted

Repository

yihui/lt ↗Account: yihui

27Stars

2Forks

0Open issues

2Open PRs

5Releases

245Commits

2Commit identities

245 commits · Last activity 2026-10-17 · +3.8% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 92%
Median days to close, 50 most recently updated closed issues: 2
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2026-05-20 · 42026-09-30 · 27

How these are measured

PracticesBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/yihui/lt on 2026-10-11.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Governance and community (1)

The repository owner accepts GitHub Sponsors

Docs source (1)

GitHub Pages site last deployed 2026-10-10

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-05-19
Seen in the repository: CLAUDE.md
Named in .Rbuildignore: .claude, CLAUDE.md
Pull request it wrote: opened by a project member
Commits: at least 192 crediting it in the message
GitHub Copilotfirst seen 2026-06-08
Pull request: opened by its own account

Models named in its commits

Claude Opus 4.687 commits · May to Jul 2026
Claude Opus 4.79 commits · May to Jun 2026
Claude Opus 4.84 commits · Jun 2026

Some of these counts are a minimum, because the search stopped before the oldest commits.

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Installing lt adds 1 package (1 with compiled code, 224 KB of source tarballs). Heaviest: xfun 224 KB.

Depends (1)

R >= 4.1.0

Imports (2)

grDevicesxfun

LinkingTo (0)

none

Suggests (8)

chromote htmltools knitr litedown magick repr shiny testit

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

1indirect

Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

simtrial

Suggests, most downloaded first

gtxlsx

How these are counted

Code & Tests

People & History

People (1)

Yihui Xie

https://yihui.org

Releases (5)

Pick two releases to compare their code metrics.

0.5Latest
record
2026-10-17 · current release · diff ↗ ·
added 9 exports
js, lt_dependency, lt_dotplot, lt_errorbar, lt_hide, lt_interactive, lt_sparkline, lt_spec, lt_wrap
·
listed once in CRAN's queue
Seen in one reading of CRAN's incoming queue, at 2026-10-17 02:21 UTC, so it stayed less than the time between readings.
0.4
record
2026-09-01 · diff ↗
0.3
record
2026-08-19 · diff ↗
0.2
record
2026-07-09 · diff ↗ ·
added 2 exports
lt_export, lt_html
0.1
record
2026-06-30
R
R 4.6.0 released · 2026-04-24

Across CRAN, the median accepted release of the past year spent 19 hours in the queue, 90% under 11 days.How queue time is measured

Package metadata

First published: 2026-06-30
Total releases: 5 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.1.0
Download size: 115 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("lt")

Format

Xie, Y. (2026). lt: Lightweight Tables via JSON Specs and JavaScript (Version 0.5) [Computer software]. https://doi.org/10.32614/CRAN.package.lt

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for lt version 0.5 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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