def untrim(self, n='<STR_LIT:all>'):
if len(self._set_xdata)==<NUM_LIT:0> or len(self._set_ydata)==<NUM_LIT:0>:<EOL><INDENT>self._error("<STR_LIT>")<EOL>return<EOL><DEDENT>if   _s.fun.is_a_number(n): n = [n]<EOL>elif isinstance(n,str):     n = list(range(len(self._set_xdata)))<EOL>for i in n:<EOL><INDENT>self['<STR_LIT>'][i] = None<EOL>self['<STR_LIT>'][i] = None<EOL>self['<STR_LIT>'][i] = None<EOL>self['<STR_LIT>'][i] = None<EOL><DEDENT>self.clear_results()<EOL>if self['<STR_LIT>']: self.plot()<EOL>return self<EOL>
Removes xmin, xmax, ymin, and ymax. 

Parameters
----------
n='all'
    Which data set to perform this action upon. 'all' means all data
    sets, or you can specify a list.