def scale(self, *args):
self._scale =  ['<STR_LIT:U+002C>'.join(map(smart_str, args))]<EOL>return self<EOL>
Scales the data down to the given size
args must be of the form::
    <data set 1 minimum value>,
    <data set 1 maximum value>,
    <data set n minimum value>,
    <data set n maximum value>
will only work with text encoding!
APIPARAM: chds