rd2d: Estimation and Inference for Boundary Discontinuity Designs

Provides pointwise and uniform estimation and inference methods for boundary discontinuity (BD) designs, a causal inference design that generalizes univariate regression discontinuity (RD) designs to settings with bivariate scores. Implements local polynomial methods for location-based and distance-based analyses, including sharp and fuzzy designs, data-driven bandwidth selection, pointwise confidence intervals, and uniform confidence bands. Methodology is developed in Cattaneo, Titiunik, and Yu (2026) <doi:10.48550/arXiv.2505.05670> for location-based methods and Cattaneo, Titiunik, and Yu (2026) <doi:10.48550/arXiv.2510.26051> for distance-based methods. For an overview and empirical guidance, see Cattaneo, Titiunik, and Yu (2026) <doi:10.48550/arXiv.2511.06474>. The companion software article is Cattaneo, Titiunik, and Yu (2025) <doi:10.48550/arXiv.2505.07989>.

Version:	0.1.0
Imports:	MASS, expm, ggplot2
Suggests:	testthat (≥ 3.0.0)
Published:	2026-05-14
DOI:	10.32614/CRAN.package.rd2d
Author:	Matias D. Cattaneo [aut, cre], Rocio Titiunik [aut], Ruiqi Rae Yu [aut]
Maintainer:	Matias D. Cattaneo <matias.d.cattaneo at gmail.com>
BugReports:	https://github.com/rdpackages/rd2d/issues
License:	GPL-2
URL:	https://rdpackages.github.io/, https://github.com/rdpackages/rd2d
NeedsCompilation:	no
Materials:	NEWS
CRAN checks:	rd2d results

Documentation:

Reference manual:

rd2d.html , rd2d.pdf

Downloads:

Package source:	rd2d_0.1.0.tar.gz
Windows binaries:	r-devel: rd2d_0.1.0.zip, r-release: rd2d_0.1.0.zip, r-oldrel: rd2d_0.1.0.zip
macOS binaries:	r-release (arm64): rd2d_0.1.0.tgz, r-oldrel (arm64): rd2d_0.1.0.tgz, r-release (x86_64): rd2d_0.1.0.tgz, r-oldrel (x86_64): rd2d_0.1.0.tgz
Old sources:	rd2d archive

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