See this ask-sage question:
http://ask.sagemath.org/question/10023/cant-install-r-packages-in-sage/
Yoshihiro Sato wrote:
> Hi,
>
> I would like to report an error message in Sage 6.3 on Mac OS X 10.9.
> r("install.packages('ggplot2')") makes an error message.
> Would you please check this problem ?
>
> Thanks,
> Yoshihiro Sato
>
>
>
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