strat

0.1

An Implementation of the Stratification Index

0packages depend

2.1Kdownloads / year

0.0%test coverage

9/13checks pass

Overview

About

Maintained by Xiang ZhouFirst published 2016-11-231 releasesCRAN page ↗GitHub ↗

An implementation of the stratification index proposed by Zhou (2012) DOI:10.1177/0081175012452207. The package provides two functions, srank, which returns stratum-specific information, including population share and average percentile rank; and strat, which returns the stratification index and its approximate standard error. When a grouping factor is specified, strat also provides a detailed decomposition of the overall stratification into between-group and within-group components.

Install

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

install.packages("strat", 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("xiangzhou09/strat")

Development version from xiangzhou09/strat. 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-strat

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-strat

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-strat

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

4NOTE9OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc

Slowest check: 3.4 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.03

0.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-06-09
9 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
9 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-04-22
10 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
9 OK · 4 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
10 OK · 4 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 20%

Downloads

2.1K

CRAN downloads in the past year

Rank #18,637 · ~6/day · ~175/mo

Releases R versions

Daily download trend is not available in this view yet.

19630 days

60590 days

2.1K1 year

Compare downloads with other packages →

Also on410 r2u25 autocran

Repository

GitHub ↗ xiangzhou09/strat

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2016-11-22

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/xiangzhou09/strat on 2026-07-30.

Continuous integration (1)

Travis CI

Reproducibility and dev environment (1)

data-raw/

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.3.1

Imports (3)

Hmisc Rcppstats

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Xiang Zhou

Author, Maintainer

Authors (1)

Xiang Zhou

Author, Maintainer

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.1Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2016-11-23
Total releases: 1 / 10 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 3.3.1
Bundled data: 138 KB / 1 file
Download size: 146 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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