code: def clip_lower(self, threshold):
          
          with cython_context():
              return SArray(_proxy=self.__proxy__.clip(threshold, float('nan')))
docs: Create new SArray with all values clipped to the given lower bound. This
          function can operate on numeric arrays, as well as vector arrays, in
          which case each individual element in each vector is clipped. Throws an
          exception if the SArray is empty or the types are non-numeric.
  
          Parameters
          ----------
          threshold : float
              The lower bound used to clip values.
  
          Returns
          -------
          out : SArray
  
          See Also
          --------
          clip, clip_upper
  
          Examples
          --------
          >>> sa = turicreate.SArray([1,2,3])
          >>> sa.clip_lower(2)
          dtype: int
          Rows: 3
          [2, 2, 3]