# cf.CoordinateReference.default_value

classmethod `CoordinateReference.``default_value`(term)

  Return the default value for an unset standard CF coordinate conversion term.

  The default values are stored in the file cf/etc/coordinate_reference/default_values.txt.

  Parameters: | term: `str` The name of the term.
  Returns: | out: The default value.
  Examples: |

      >>> cf.CoordinateReference.default_value('ptop')
      0.0
      >>> print cf.CoordinateReference.default_value('north_pole_grid_latitude')
      0.0