A quick update. The spatial analysis libraries in
the R Project have undergone a substantial
change in the past couple of years. The details are laid out in the R
spatial blog, but the crux of the issue is that
legacy packages rgdal and rgeos have been retired, and packages that
depend on them (such as raster and sp) will have been modified to use
new dependencies, or replaced entirely. For the most part, the things we
used to do with raster we now do with
terra.
The transition was a bit rough, and for a while we needed to translate back
and forth between terra and raster in our work. That should now be
over, with all current packages using the new terra-based workflow.
I have already updated my quick mapping tutorial,
and I’ve just updated my ecospat tutorial, now
that ecospat has been fully updated to use terra too. Some of the other
spatial tutorials you find here may not work properly, or at all, until I
have a chance to review them. If you happen to find anything that isn’t
working as expected, please let me know!