How do I refer to files in the `inst` directory of

Question

My package includes raw data in .csv files, but I want them to be processed using an R script placed in the data/ directory. I've placed the raw data files in inst/extdata.

data_locs = c(file.path("..", "inst", "extdata"),
              file.path("..", "extdata"),
              file.path("extdata"),
              file.path("inst", "extdata"))

data_loc = data_locs[file.exists(data_locs)]

files = file.path(data_loc, 
                  list.files(data_loc, pattern=".*\\.csv"))

datalist = lapply(pubtime_files, utils::read.csv)

data = do.call(rbind, datalist)

rm(datalist, files, data_loc, data_locs)

I use the multiple data_locs because the working directory used when roxygenizing is different than when building the package, but even with this, list.files doesn't find any files and I get:

==> R CMD INSTALL --no-multiarch --with-keep.source PACKAGE

* installing to library ‘/Users/noamross/Library/R/3.0/library’
* installing *source* package ‘PACKAGE’ ...
** R
** data
*** moving datasets to lazyload DB
Error in datalist[[1]] : subscript out of bounds

How do I load the data in extdata with a script in data/?