clean.variable.name: Translate a file name into a valid R variable name.
Description
This function will translate a file name into a name that
is a valid variable name in R. Non-alphabetic characters
on the boundaries of the file name will be stripped;
non-alphabetic characters inside of the file name will be
replaced with dots.
Usage
clean.variable.name(variable.name)
Arguments
variable.name
A character vector containing a
variable's proposed name that should be standardized.