The legacy R spatial infrastructure packages maptools, rgdal and rgeos will be 
archived by CRAN on Monday, October 16, 2023; rgrass7 has  already been 
replaced by rgrass and will be archived with the retiring packages. 

The choice of date matches the previously announced archiving during October 
2023, and the specific date matches the release schedule of Bioconductor 3.18 
(some Bioconductor packages depend on retiring packages).

sp_2.1-0 was published October 2, 2023, dropping all dependencies on the 
retiring packages. sp will continue to be available and maintained, but not 
developed further. Users of sp classes may continue to make use of them, but 
will have to use sf or terra to read, write or manipulate objects with coercion 
(for a guide to coercion, see 
https://cran.r-project.org/web/packages/rgrass/vignettes/coerce.html).

Information about the evolution project may be found in reports and resources 
at https://r-spatial.github.io/evolution/; a recent blog by Jakub Nowosad may 
also be useful as an overview of what has been going on: 
https://geocompx.org/post/2023/rgdal-retirement/. For more detail, see 
https://r-spatial.github.io/evolution/ogh23_bivand.html and a video recording 
of this presentation https://av.tib.eu/media/63141 (August 28).

All directly affected package maintainers have been alerted to the impending 
changes, some in December 2022, most others in March-April 2023. Many have 
already updated their packages on CRAN - thank you for your understanding! The 
remainder received github issue comments and email reminders in the last ten 
days, and will receive final notices to update by October 9. 

On R-universe, builds of packages archived on CRAN are dropped automatically 
(https://github.com/r-universe-org/help/issues/286). Read-only github mirrors 
of archived packages will remain available in principle while github exists 
(https://github.com/r-hub/rhub/issues/568), for example 
https://github.com/cran/rgdal. Other binary builds (Debian, Fedora, Ubuntu) 
have been alerted; support at Anaconda has been alerted.

On CRAN, the retired packages will continue to be available as source packages 
on https://cran.r-project.org/src/contrib/Archive. maptools, rgdal and rgeos 
also retain their R-forge repositories, which may be used to retrieve functions 
for adding to other packages.

A snapshot of Windows and macOS binary packages may be found on 
https://github.com/r-spatial/evolution/tree/main/backstore.

Please raise questions by replying to this post, or as issues on 
https://github.com/r-spatial/evolution.


--
Roger Bivand
Emeritus Professor
Norwegian School of Economics
Postboks 3490 Ytre Sandviken, 5045 Bergen, Norway
roger.biv...@nhh.no
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