Arguments
folder
logical, TRUE all files in folder will be
imported, FALSE only selected file will be imported.
suffix
string, only files with specified suffix
will be imported.
prefix
string, only files with specified prefix
will be imported.
resultFiles
string if file name is provided file
will be imported without showing the file open dialogue.
resultFolder
string if fodler name is provided
files in folder will be imported without showing the
select folder dialogue.
extension
string providing the file extension.