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NJ

Najko Jahn

4 packages On CRAN since Jul 2016 (10 years) · last active 3 months ago 0000-0001-5105-1463
R-Universe CRAN Search

Downloads

3.9K

Last 30 days

13.2K

Last 90 days

63.1K

Last year

Average trend: -20.4% (30d vs prior 30d)

Top Packages by Downloads

rcrossref
1.9K
europepmc
1.4K
roadoi
326
medrxivr
299

Portfolio Check Status

Aggregate CRAN check results across 3 maintained packages.

39

OK

Recent Activity

medrxivr updated v0.1.4 May 12, 2026

Access and Search MedRxiv and BioRxiv Preprint Data

medrxivr new v0.1.3 May 7, 2026

Access and Search MedRxiv and BioRxiv Preprint Data

rcrossref updated v1.2.1 Aug 19, 2025

Client for Various 'CrossRef' 'APIs'

medrxivr update v0.1.1 Oct 3, 2024

Access and Search MedRxiv and BioRxiv Preprint Data

roadoi updated v0.7.3 Sep 25, 2024

Find Free Versions of Scholarly Publications via Unpaywall

europepmc updated v0.4.3 Sep 19, 2023

R Interface to the Europe PubMed Central RESTful Web Service

europepmc updated v0.4.2 Aug 20, 2023

R Interface to the Europe PubMed Central RESTful Web Service

rcrossref updated v1.2.0 Nov 10, 2022

Client for Various 'CrossRef' 'APIs'

roadoi updated v0.7.2 Mar 3, 2022

Find Free Versions of Scholarly Publications via Unpaywall

europepmc updated v0.4.1 Sep 1, 2021

R Interface to the Europe PubMed Central RESTful Web Service

Maintained Packages

3 packages

Package Version
rcrossref 1.2.1
europepmc 0.4.3
roadoi 0.7.3

Other Roles

1 package

Package Version
medrxivr 0.1.4