I've been struggling to get the example code for a function working using devtools::check(), because the data required for the example is not in .RData format. Unfortunately, the way the function is written, .RData cannot be loaded and work properly. The function takes in a list of filenames and performs an action on them collectively.
Therefore, example code must be written in a way that check() is able to access a folder and list the files therein. Using the function on my own computer, I input
setwd("/Users/mydirectory")
myfilelist <- list.files(pattern = "mypattern")
output <- myfunction(myfilelist, ...)
and everything is groovy. But this doesn't work with devtools because @examples doesn't know how to access subdirectories on my computer. check() pulls the following error:
base::assign(".ptime", proc.time(), pos = "CheckExEnv")
This is almost undoubtedly because check() doesn't know where to look for the data. I'd like it to look toward github to access the online data repository.
I found this brief conversation regarding a similar roxygen-related problem, but overall I haven't seen much advice on how to work through it. I think that perhaps this issue starts to get a little closer to my situation, but here the user failed to export a function, rather than bind data to an example.
I don't think I'm looking for a pull function (though the end goal is to pull data...), does anyone have advice moving forward? I have the data stored in the inst/extdata folder on github, so while I don't really have something reproducible for you all I'm hoping you might have some thoughts.
Edit: I worked around the problem using @alistaire's advice below, and guiding the roxygen to the package directory (updated on github) and also using \dontrun{}. However, I am leaving the question unanswered for now because I think accessing data stored in github should still be somehow possible and we haven't yet addressed that.
