[R-pkg-devel] Functions requiring packages listed on Suggests

[Juan Antonio Garcia Martin]

Dear mantainers,

I have a question, since one of my packages currently does not pass the 
onSuggest special check.

Two functions of my package require some of the suggested packages 
either in CRAN (DiagrammeR, DiagrammeRsvg and rsvg) or Bioconductor ( 
rtracklayer and GenomicRanges), also listed in the suggest section.

The functions detect whether the suggested packages are installed and 
available, and return an error message indicating that the packages 
required to use the function.

In fact DiagrammeR uses the same approach, the function export_graph 
requires both DiagrammeRsvg and rsvg, but they are not listed in the 
imports, it just returns a message when they are not installed.

I have the option of removing the examples, or printing the same 
messages but returning from the functions instead of using stop. What is 
the preferred behavior in these cases?

Best regards,
Juan Antonio



	

	

	

	

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