Linking to other packages in documentation in roxygen2 in R

Question

I am wondering it there exists a method to link to function from other package when I'm trying to write a documentation for new package using roxygen2. Something like \link{pck=PACKAGE_NAME, fun=FUNCTION_NAME}?

Answer 1

You have to type \link[pkg]{function} e.g. \link[stringi]{stri_c}

Answer 2

In addition to the answer by potockan:
Some packages document several functions in a single help page. For example, the trim function from Bioconductor package GenomicRanges is documented in intra-range-methods (which is also the name of a help page from other packages such as IRanges).

To link to the right page with roxygen2 you can use:

\link[GenomicRanges:intra-range-methods]{trim} 

or

\code{\link[GenomicRanges:intra-range-methods]{trim}}  

to format the text correctly.

The help page will only show trim but will link to the right help page.