问题
Actually I am trying to install packages offline. I have R studio. what I do is based on previously asked question as follows:
install.packages(C:/Users/Desktop/class_7.3-12.zip", repos = NULL)
I get the error I mentioned in the title. is someone out there to give me an advice ?
Thanks
回答1:
You can install packages from source or binaries. In the "Package Archives" section of the documentation you may read:
Package Source class_7.3-12.tar.gz
Windows Binary class_7.3-12.zip
(32- & 64-bit) Mac OS X 10.9 (Mavericks) class_7.3-12.tgz
When installing from binary (as it seems to be your case):
install.packages("class_7.3-12.zip", repos = NULL, type="binary")
Otherwise, when installing from source:
install.packages("class_7.3-12.tar.gz", repos = NULL, type="source")
来源：https://stackoverflow.com/questions/30123786/error-in-install-packages-type-both-cannot-be-used-with-repos-null