I seem to be sharing a lot of code with coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have.
Is there an elegant way to call installed.packages()
, compare that to the ones I am loading and install if missing?
转载于:https://stackoverflow.com/questions/4090169/elegant-way-to-check-for-missing-packages-and-install-them