[R] Warning from installing packages in R3.6.1

Steven Yen @yen @end|ng |rom hqu@edu@cn
Sun Sep 15 07:44:42 CEST 2019

Can someone help me understand why Rtools is needed when installing a 
package from CRAN, and from a zipped file? What's the point?

On 9/14/2019 10:29 PM, Steven Yen wrote:
> Since updating to R3.6.1., I have received a WARNING message saying 
> Rtools is required.
> I get the same message installing online from CRAN and from a .zip file.
> It looked like installation still went through in both cases, BUT,
> Another student installed a .zip file and received the following error 
> message:
> Error in install.packages : invalid multibyte string at `<87><55>...
> do I have to live with the message?
> I hate to tell students to install Rtools, which they do not do much with.
> Warning message is listed below. Thank you.
> ---
> > Install.packages("aod")
> WARNING: Rtools is required to build R packages but it is not 
> currently installed. Please download and install the appropriate 
> version of Rtools before proceeding:
> Package 'aod' successfully unpacked and MD5 sums checked.
> -- 
> syen using hqu.edu.cn

syen using hqu.edu.cn

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