[R] How to build a package which loads Rgraphviz (if installed)...

Søren Højsgaard Soren.Hojsgaard at agrsci.dk
Sun Jul 13 00:45:48 CEST 2008

The tricky part is not getting it through the checks on my computer. It is when I upload to CRAN I get the problems, because "their" computers need Rgraphviz as well... ("Suggests" does not seem to be the solution...)


Fra: Duncan Murdoch [mailto:murdoch at stats.uwo.ca]
Sendt: sø 13-07-2008 00:36
Til: Søren Højsgaard
Cc: William Revelle; r-help at stat.math.ethz.ch
Emne: Re: [R] How to build a package which loads Rgraphviz (if installed)...

On 12/07/2008 6:27 PM, Søren Højsgaard wrote:
> Bill,
> Thanks for the suggestion, but it does not solve the problem; I get the same warning from rcmd check. I suspect that rcmd check actually checks that any package referred to in require() is declared in the DESCRIPTION file. From the version numbers from your 'psych' package I guess you are stuck with the same problem???

There are varying degrees of dependence.  Probably "Suggests" is what
you want.

Note that *you* need to have RGraphViz to make it through the checks,
but other users won't need it.

Duncan Murdoch

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