[R] Error while running swirl package in R

[David Winsemius]

On Aug 23, 2015, at 10:08 AM, devender singh saini wrote:

> Hi,
>     I am not able to work in swirl package in R. I am able to install the
> package R. But while giving the library("swirl") command the error comes up.
> This is the error message.
> 
>> install.packages("swirl")
> Installing package into ‘C:/Users/Devender/Documents/R/win-library/3.2’
> (as ‘lib’ is unspecified)
> trying URL
> 'https://cran.rstudio.com/bin/windows/contrib/3.2/swirl_2.2.21.zip'
> Content type 'application/zip' length 132711 bytes (129 KB)
> downloaded 129 KB
> 
> package ‘swirl’ successfully unpacked and MD5 sums checked
> 
> The downloaded binary packages are in
>        C:\Users\Devender\AppData\Local\Temp\RtmpKuk1l0\downloaded_packages
>> library("swirl")
> Error in get(Info[i, 1], envir = env) :
>  cannot open file
> 'C:/Users/Devender/Documents/R/win-library/3.2/httr/R/httr.rdb': No such
> file or directory
> Error: package or namespace load failed for ‘swirl’

It appears that the swirl package expects to have the httr package installed. You did not include the parameter dependencies=TRUE when you installed swirl.

> 
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David Winsemius
Alameda, CA, USA