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adjoin: Constructing Adjacency Matrices Based on Spatial and Feature Similarity

Constructs sparse adjacency matrices from spatial coordinates, feature measurements, class labels, and temporal indices. Supports nearest-neighbor graphs, heat-kernel weights, graph Laplacians, diffusion operators, and bilateral smoothers for graph-based data analysis, following spectral graph methods in von Luxburg (2007) <doi:10.1007/s11222-007-9033-z>, diffusion maps in Coifman and Lafon (2006) <doi:10.1016/j.acha.2006.04.006>, and bilateral filtering in Tomasi and Manduchi (1998) <doi:10.1109/ICCV.1998.710815>.

Version: 0.1.0
Depends: R (≥ 4.0.0)
Imports: Rcpp (≥ 0.11.3), Matrix, assertthat, Rnanoflann, chk, RSpectra, igraph, parallel, stats, methods, utils, mgcv, proxy, corpcor
LinkingTo: Rcpp, RcppArmadillo
Suggests: testthat (≥ 3.0.0), RcppHNSW (≥ 0.6.0), knitr, rmarkdown, furrr, crayon, ggplot2
Published: 2026-04-21
DOI: 10.32614/CRAN.package.adjoin
Author: Bradley R. Buchsbaum ORCID iD [aut, cre]
Maintainer: Bradley R. Buchsbaum <brad.buchsbaum at gmail.com>
BugReports: https://github.com/bbuchsbaum/adjoin/issues
License: MIT + file LICENSE
URL: https://github.com/bbuchsbaum/adjoin
NeedsCompilation: yes
Citation: adjoin citation info
Materials: README, NEWS
CRAN checks: adjoin results

Documentation:

Reference manual: adjoin.html , adjoin.pdf
Vignettes: Getting Started with adjoin (source, R code)
Spatial Neighbor Graphs (source, R code)

Downloads:

Package source: adjoin_0.1.0.tar.gz
Windows binaries: r-release: adjoin_0.1.0.zip, r-oldrel: adjoin_0.1.0.zip
macOS binaries: r-release (arm64): adjoin_0.1.0.tgz, r-oldrel (arm64): adjoin_0.1.0.tgz, r-release (x86_64): adjoin_0.1.0.tgz, r-oldrel (x86_64): adjoin_0.1.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=adjoin to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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