[R] how to install R 3.0.1

[John Kane]

Thanks Uwe. installed.packages()  is definitely faster and better. 

 I don't think I even knew installed.packages() existed. I think I gave up looking for something like it a year or so ago.

John Kane
Kingston ON Canada


> -----Original Message-----
> From: ligges at statistik.tu-dortmund.de
> Sent: Sat, 1 Jun 2013 14:59:22 +0200
> To: r-help at stat.math.ethz.ch
> Subject: Re: [R] how to install R 3.0.1
> 
> 
> 
> 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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> ______________________________________________
> R-help at r-project.org mailing list
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