Make third party library available in my R package [duplicate]

Answer 1

Since you are using devtools, you can add

devtools::use_package("methyilumi")

in the console, and call methyilumi::methylumIDAT in the body of your function. That way, the package is automatically listed in Imports in the DESCRIPTION file.

This sections gives the instructions for several different cases: http://r-pkgs.had.co.nz/namespace.html#imports