stri_prepare_arg_double: Prepare a Numeric Vector Argument [internal]
Description
This is an internal function. However, the interested user
may play with it in order to get more insight on how
stringi deals with its functions' arguments. See
`Value' section for details.Usage
stri_prepare_arg_double(x)
Value
- If
x
is a factor, as.character
is
called, and the resulting character vector is coerced to
numeric. If it is a numeric vector, then it is returned
with no change. If atomic vector or a matrix is given, it
is coerced to a numeric vector. Otherwise the function
throws an error.