[R] how to install R 3.0.1

[Uwe Ligges]

On 01.06.2013 14:58, Uwe Ligges wrote:
>
>
> On 01.06.2013 02:02, Ranjan Maitra wrote:
>> On Fri, 31 May 2013 18:10:19 -0500 Robert Baer <rbaer at atsu.edu> wrote:
>>
>>> On 5/31/2013 11:59 AM, Ranjan Maitra wrote:
>>>> Hi John,
>>>>
>>>> I suspect you may be missing a c()?
>>>>
>>>> On Fri, 31 May 2013 06:05:45 -0800 John Kane <jrkrideau at inbox.com>
>>>> wrote:
>>>>
>>>>> paks  <-  install.packages( "Hmisc", "plyr")
>>>> paks <- install.packages( c("Hmisc", "plyr"))
>>>>
>>>>
>>>>>     install.packages(paks)
>>>>> You can use the command  library()  to get a list of what is
>>>>> installed on your machine.
>>>> Is it possible to get this as a vector of only the package names, or
>>>> is post-processing the output of library() the only way out?
>>> Do you mean something like:
>>> paks = library()$results[,1]
>>> save(paks, file = 'paks.RData')
>>> Rob
>>
>> Exactly! Then
>>
>> install.packages(library()$results[,1])
>>
>> does all the updated installs in one shot.
>
>
> Why do you want to reinstall all packages?
>
> I'd go for
> udpate.packages(checkBuilt=TRUE)
> if a reinstallation after an update of R is what you are aiming at.


.... and forgot to add: installed.packages() is certainly more 
appropriate than library() to find the names of installed packages (with 
less overhead and hence faster).

Best,
Uwe Ligges

> Best,
> Uwe Ligges
>
>
>
>> Thanks!
>> Ranjan
>>
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