R: How to run some code on load of package?
r, r-package
Solution
There is usually a "processing function" (traditionally called zzz.R) with tasks to be performed when the package is loaded, such as loading libraries and compiled code. For example you can create a zzz.R file where you create this function:
.onLoad <- function(libname, pkgname){
x <- rnorm(10) ## dummy example
}
Problem
I am learning to build a package for R. Now to set it up I need to run some code when the package is being loaded via `require(myPackage)`. I read the documentation on `help(".onLoad")` that just made me really confused as there is no example. How do I actually use `.onLoad`? Can someone please show me a simple example? For example I know `export(myfun)` in the NAMESPACE file will export `myfun` for use, what is the code that I need to run say `rnorm(10)` at package load?