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Painless way to install a new version of R?
In R, packages are not compatible across upgrades, and must be reinstalled. Is there any way to easily install the same set of packages in the new version as what I had installed in the old version?
Edit: I can't easily access the old version of R, since I upgrade via apt.
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On most single-user systems (Mac, Windows, and Linux), when you upgrade to a new minor version of R (like 3.3. 0 to 3.4. 0), R will not find the packages, you will need to reinstall your R packages. This is an inconvenience, but the problem is obvious and it is easy to fix.
The key thing to be aware of is that when you update R, if you just download the latest version from the website, you will lose all your packages. The easiest way to update R and not cause yourself a huge headache is to use the installr package.
I just posted a question with a possible solution:
update.packages(checkBuilt=TRUE, ask=FALSE) What about that doesn't work for you?
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