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, or None if there is not one.

Examples:

>>> cf.CoordinateReference.default_value('ptop')
0.0
>>> print cf.CoordinateReference.default_value('north_pole_grid_latitude')
None