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

Answer 1

This is done with the NAMESPACE file and also noted in the DESCRIPTION file. There are a few ways to import a function in NAMESPACE, but the simplest is just importFrom("[PACKAGE_NAME]",[FUNCTION_NAME). Then, in DESCRIPTION, add the package name to imports.

See this very good tutorial from Friedrich Leisch.

http://cran.r-project.org/doc/contrib/Leisch-CreatingPackages.pdf

Answer 2

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