Downloads GIFTI test data from https://www.nitrc.org/frs/download.php/411/BV_GIFTI_1.3.tar.gz
download_gifti_data(
outdir = system.file(package = "gifti"),
overwrite = FALSE,
...
)
Output directory for test file directory
Should files be overwritten if already exist?
additional arguments to download.file
Vector of file names