code: def read_coordinates(self, where=None, start=None, stop=None, **kwargs):
          
  
          # validate the version
          self.validate_version(where)
  
          # infer the data kind
          if not self.infer_axes():
              return False
  
          # create the selection
          self.selection = Selection(
              self, where=where, start=start, stop=stop, **kwargs)
          coords = self.selection.select_coords()
          if self.selection.filter is not None:
              for field, op, filt in self.selection.filter.format():
                  data = self.read_column(
                      field, start=coords.min(), stop=coords.max() + 1)
                  coords = coords[
                      op(data.iloc[coords - coords.min()], filt).values]
  
          return Index(coords)
docs: select coordinates (row numbers) from a table; return the
          coordinates object