http://www.keittlab.org/
On Mon, Mar 19, 2018 at 6:41 AM, Dirk Eddelbuettel <e...@debian.org> wrote:
>
> On 18 March 2018 at 21:57, Tim Keitt wrote:
> | That's a great idea, however my problem is with building a vignette, not
> | running tests, unless they are linked in some way I'm not understanding.
>
> Similar idea applies: condition, just as Inaki and Thierry suggested. An
> example for a conditional vignette evaluation is
>
> ```{r echo = FALSE, message = FALSE}`r ''`
> hasData <- requireNamespace("hurricaneexposuredata", quietly = TRUE)
> #1
> if (!hasData) {
> #2
> knitr::opts_chunk$set(eval = FALSE)
> #3
> msg <- paste("Note: Examples in this vignette require that the",
> "`hurricaneexposuredata` package be installed. The
> system",
> "currently running this vignette does not have that
> package",
> "installed, so code examples will not be evaluated.")
> msg <- paste(strwrap(msg), collapse="\n")
> message(msg)
> #4
> }
> ```
>
That's a great solution. I've used something similar eg
https://raw.githubusercontent.com/thk686/strider/master/vignettes/strider.Rmd
I'm still confused however as I was sure that my code chunks were run
during CRAN check even when the eval option was set to false. But its
sounding like I made the wrong assumption. Not sure why it did not work
before.
THK
>
> and the paper (https://journal.r-project.org/archive/2017/RJ-2017-026/) by
> Brooke Anderson and myself discusses #1 to #4.
>
> Dirk
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
>
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