[R] unable to access index for repository...

[Steven Yen]

Thanks. I did as suggested but still received a warning, though the 
installation went through. Anything I could do to install without the 
warning message.

What is the contrib.url argument?

 > install.packages("aod",repos='https://cran-archive.r-project.org')
Warning in install.packages :
   unable to access index for repository 
http://cran.rstudio.com/bin/windows/contrib/3.0
trying URL 
'https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_1.3.zip'
Content type 'application/zip' length 225712 bytes (220 Kb)
opened URL
downloaded 220 Kb

package ‘aod’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
C:\Users\USER\AppData\Local\Temp\Rtmp46p9a3\downloaded_packages
 >

On 2020/10/5 下午 04:58, Uwe Ligges wrote:
> Then you'd rather need
>
> install.packages("aod",repos='https://cran-archive.r-project.org')
>
> or use the contrib.url argument.
>
> Best,
> Uwe Ligges
>
>
> On 05.10.2020 10:47, Steven Yen wrote:
>> Thanks for the help. I do update to the latest R-4.0.2. As I said, 
>> for reasons that's hard to explain, some of my tasks are better 
>> handled with an older version of R, in this case R-3.0.3. Please just 
>> help me install packages successfully with this older version of R.
>>
>> I ran the following line but obviously was not getting it across.
>>
>> =====
>>
>>> install.packages("aod",repos='https://cran-archive.r-project.org/bin/windows/contrib/3.0/') 
>>> Warning in 
>> install.packages : unable to access index for repository 
>> http://cran.rstudio.com/bin/windows/contrib/3.0 Warning in 
>> install.packages : unable to access index for repository 
>> https://cran-archive.r-project.org/bin/windows/contrib/3.0/bin/windows/contrib/3.0 
>> Warning in install.packages : package ‘aod’ is not available (for R 
>> version 3.0.3)
>>
>> On 2020/10/5 下午 04:12, Uwe Ligges wrote:
>>> From
>>>
>>> ../ReadMe
>>> in the mentioned web resource:
>>>
>>> "Packages for R >= 1.7.0 and R < 3.2.0 are available from
>>> https://cran-archive.r-project.org/bin/windows/contrib/"
>>>
>>> We do not hold binaries of several year old versions of R on CRAN.
>>>
>>> Note that R 3.0.0 is 7 years old. You shoudl realy consider to 
>>> update to 4.0.2.
>>>
>>> Best,
>>> Uwe Ligges
>>>
>>>
>>>
>>>
>>> On 05.10.2020 09:56, Steven Yen wrote:
>>>> I had to install/use an older version of (R-3.0.3) for a reason. While
>>>> installing a package from CRAN (either in RStudio or R), I received 
>>>> the
>>>> following warning message saying unable to access index for repository
>>>> http://cran.rstudio.com/bin/windows/contrib/3.0. See message below. In
>>>> this case, I tried to install "aod". The install nevertheless went
>>>> through, as confirmed by the library statement (I did not try to use
>>>> it). Any idea? Thank you.
>>>>
>>>> =====
>>>>
>>>> Warning: unable to access index for repository
>>>> http://cran.rstudio.com/bin/windows/contrib/3.0 Warning: unable to
>>>> access index for repository
>>>> http://cran.rstudio.com/bin/windows/contrib/3.0 >
>>>> install.packages("aod") Warning in install.packages : unable to access
>>>> index for repository http://cran.rstudio.com/bin/windows/contrib/3.0
>>>> Warning in install.packages : unable to access index for repository
>>>> http://cran.rstudio.com/bin/windows/contrib/3.0 package ‘aod’ is
>>>> available as a source package but not as a binary Warning in
>>>> install.packages : package ‘aod’ is not available (for R version 
>>>> 3.0.3)
>>>>   > library(aod)
>>>>
>>>>
>>>>     [[alternative HTML version deleted]]
>>>>
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>>>>