get_additional_field
- HIRSHIRS.get_additional_field(M, fld)
- Get additional field. - Get field from other dataset, original objects, or otherwise. To be implemented by subclass implementations. - Exact fields depend on subclass. - Parameters:
- M (ndarray) – ndarray with existing data A (masked) array with a dtype such as returned from self.read <Dataset.read>. 
- fld (str) – Additional field to read from original data 
 
- Returns:
- ndarray with fields of M + fld.