See V
.
VC(tofactor = 0, keepblank = 0, sep = "\t")
if this is equal to numeric 1 or TRUE
, characters will be converted to factors. Otherwise no
conversion will be done. The default is not to convert.
if characters are not to be converted to factors, this argument decides how to deal with
blank cells in character columns. If it is numeric 1 or TRUE
, a blank cell will be converted
to "" (size 0 string). Otherwise it is viewed as NA
(default).
a single character to differentiate cells of a table. The default value should be used when your data is from Excel.