It's because your R is too old-优快云博客

本文详细介绍了如何解决在Ubuntu 14.04系统中安装R包ggplot2时遇到的依赖问题，包括更新R版本至3.1及以上的全过程。

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I just want to install ggplot2 for R. But it says I don't have reshape2. Then I tried to install reshape2 but it says
" plyr package for R not available for R version 3.0.2"

I thought this is because the R version is too new. Somebody said and I tried download the plyr package and install. FINALLY I GET:
"ERROR: this R is version 3.0.2, package 'plyr' requires R >= 3.1.0"

So, My R version is too old!!!!

I searched a lot. Only the following worked.

http://askubuntu.com/questions/218708/installing-latest-version-of-r-base

http://stackoverflow.com/questions/16093331/how-to-install-r-version-3

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This is an old post and I wrote it when it was impossible to install R with simple (it was installing old 2.15 version):

sudo apt-get install r-base-core

Right now you do not need to do all written below and can simply use the abovementioned command. At the time of updating it will give you 3.1 version.

Here is previous post

Uninstall old R

sudo apt-get remove r-base-core

Open sources.list

sudo nano /etc/apt/sources.list

and add deb to it

deb http://cran.rstudio.com/bin/linux/ubuntu precise/

precise is your ubuntu name (may be different)

"precise" is 12.04. My ubuntu is 14.04. It should be "trusty"

Add key to sign CRAN packages

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9

Add specific PPA to the system

sudo add-apt-repository ppa:marutter/rdev
sudo apt-get update
sudo apt-get upgrade

installing

sudo apt-get install r-base

From R to check version

version

should give you

version.string R version 3.0.0 (2013-04-03)

Hope people will find this helpful