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GJ

Gregory Jefferis

22 packages On CRAN since Dec 2011 (14 years) · last active 4 weeks ago 0000-0002-0587-9355

Downloads

1.1M

Last 30 days

3.5M

Last 90 days

15.7M

Last year

Average trend: -9.3% (30d vs prior 30d)

Top Packages by Downloads

rappdirs
922.3K
RANN
68K
dendextend
66.7K
git2r
30.2K
nabor
10.8K
slackr
4.6K
bmp
4.6K
readbitmap
4.5K
colorRamps
4.1K
scholar
2.7K

Portfolio Check Status

Aggregate CRAN check results across 15 maintained packages.

12

NOTE

183

OK

Recent Activity

natcpp updated v0.3.2 Sep 26, 2026

Fast C++ Primitives for the 'NeuroAnatomy Toolbox'

nat.nblast updated v1.6.10 Aug 25, 2026

NeuroAnatomy Toolbox ('nat') Extension for Assessing Neuron Similarity and Clustering

RANN updated v2.6.3 Aug 23, 2026

Fast Nearest Neighbour Search (Wraps ANN Library) Using L2 Metric

dendroextras updated v0.2.4 Aug 23, 2026

Extra Functions to Cut, Label and Colour Dendrogram Clusters

dracor updated v0.2.7 Aug 23, 2026

Decode Draco Format 3D Mesh Data

nat updated v1.8.26 Aug 4, 2026

NeuroAnatomy Toolbox for Analysis of 3D Image Data

natcpp updated v0.3.1 Jul 20, 2026

Fast C++ Primitives for the 'NeuroAnatomy Toolbox'

nat.templatebrains updated v1.2.3 Jul 17, 2026

NeuroAnatomy Toolbox ('nat') Extension for Handling Template Brains

natcpp updated v0.3.0 Jul 8, 2026

Fast C++ Primitives for the 'NeuroAnatomy Toolbox'

scholar updated v1.0.0 Jul 7, 2026

Analyse Citation Data from Google Scholar

Maintained Packages

15 packages

Package Version
RANN 68K downloads/30d 2.6.3
bmp 4.6K downloads/30d 0.3.1
readbitmap 4.5K downloads/30d 0.1.5
colorRamps 4.1K downloads/30d 2.3.4
nat 633 downloads/30d 1.8.26
nat.utils 557 downloads/30d 0.6.1
dendroextras 470 downloads/30d 0.2.4
readobj 436 downloads/30d 0.4.1
natmanager 410 downloads/30d 0.5.2
nat.nblast 360 downloads/30d 1.6.10
natcpp 353 downloads/30d 0.3.2
dracor 334 downloads/30d 0.2.7
nat.templatebrains 329 downloads/30d 1.2.3
IgorR 300 downloads/30d 0.9.0
cmtkr 246 downloads/30d 0.2.3

Co-authored Packages

2 packages

Package Version
dendextend 66.7K downloads/30d 1.19.1
scholar 2.7K downloads/30d 1.0.0

Contributions

4 packages

Package Version
rappdirs 922.3K downloads/30d 0.3.4
git2r 30.2K downloads/30d 0.36.2
slackr 4.6K downloads/30d 3.3.1
Morpho 1.8K downloads/30d 2.13

Other Roles

1 package

Package Version
nabor 10.8K downloads/30d 0.5.0

Package repositories

Repositories of packages Gregory Jefferis maintains where an AI coding tool was found. Other people commit to these repositories too, so each line describes the repository, not Gregory Jefferis's own work.

  • Packages: cmtkr
    • Claude Codefirst seen 2026-02-12
      Seen in the repository: CLAUDE.md
      Named in .Rbuildignore: .claude, CLAUDE.md
      Named in .gitignore: .claude
      Pull request it wrote: opened by a project member
  • natverse/nat ↗(organization: natverse)
    Packages: nat
    • Claude Codefirst seen 2026-07-30
      Named in .Rbuildignore: .claude
      Pull request it wrote: opened by a project member
      Commits: at least 2 crediting it in the message
    • Claude Codefirst seen 2026-03-08
      Commits: at least 1 crediting it in the message
    • Claude Code
      Pull requests: 3 from outside contributors, first on 2026-03-07
  • Packages: natcpp
    • Claude Codefirst seen 2026-07-08
      Named in .Rbuildignore: .claude
      Pull request it wrote: opened by a project member
      Commits: at least 4 crediting it in the message

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