For an R package, the best way to find the manual is to find the location of the installed R package. In the following example, we use the R package called rattle as an example:
> library(rattle)
> path.package('rattle')
[1] "C:/Users/yany/Documents/R/win-library/3.3/rattle"
Note that different readers will definitively get different paths. Our result is shown in the following screenshot:
The PDF manual and HTML manuals are located under the doc subdirectory. It is a great idea to explore these subdirectories. To save space, we will not show the detailed files contained under the subdirectories. The second best way is to go to http://r-project.org, click CRAN, choose a nearby mirror location and click packages on the left-hand side. Then, from one of the two lists, search for the package. After clicking on the package, we will find...
