This function is the internal function used in IsoriX to download the large
files from internet and it could be useful to download anything from within
R. We created this function to make sure that the downloaded files are valid.
Downloads can indeed result in files that are corrupted, so we tweaked the
options to reduce this possibility and the function runs a check if the
signature of the file is provided to the argument md5sum.
downloadfile(
address = NULL,
filename = NULL,
path = NULL,
overwrite = FALSE,
md5sum = NULL,
verbose = interactive()
)The complete path of the downloaded file (invisibly)
A string indicating the address of the file on internet
A string indicating the name under which the file must be stored
A string indicating where to store the file on the hard drive (without the file name!). Default = current directory.
A logical indicating if an existing file should be re-downloaded
A string indicating the md5 signature of the valid file
as created with tools::md5sum
A logical indicating whether information about the
progress of the procedure should be displayed or not while the function is
running. By default verbose is TRUE if users use an interactive R
session and FALSE otherwise. If a numeric is provided instead,
additional information about the download will be provided if the number is
greater than 1.
getelev, getprecip