Get the prefix path to the ANEMONE DB data directory.

directory_prefix() reads the ranemone.directory_prefix option set by users, and is used for downloading and reading files. It should be a persistent directory with easy access, such as ~/db, not a temporary directory like tempdir().

Usage

directory_prefix()

Value

A path read from the option.

Details

If not set, it falls back to the extdata/directory_prefix in the package installation directory, which is mainly for testing and examples.

Examples

old = options(ranemone.directory_prefix = "prefix/path/to/data")

ranemone::directory_prefix()
#> prefix/path/to/data

options(old) # reset for this example, not needed in real use