filename : str
File name or URL of a Common Data Model (CDM) NEXRAD Level 2 file.
File of in this format can be created using the NetCDF Java Library
tools [R5]. A URL of a OPeNDAP file on the UCAR THREDDS Data
Server [R6] is also accepted the netCDF4 library has been compiled
with OPeNDAP support.
field_names : dict, optional
Dictionary mapping NEXRAD moments to radar field names. If a
data type found in the file does not appear in this dictionary or has
a value of None it will not be placed in the radar.fields dictionary.
A value of None, the default, will use the mapping defined in the
metadata configuration file.
additional_metadata : dict of dicts, optional
Dictionary of dictionaries to retrieve metadata from during this read.
This metadata is not used during any successive file reads unless
explicitly included. A value of None, the default, will not
introduct any addition metadata and the file specific or default
metadata as specified by the metadata configuration file will be used.
file_field_names : bool, optional
True to use the NEXRAD field names for the field names. If this
case the field_names parameter is ignored. The field dictionary will
likely only have a ‘data’ key, unless the fields are defined in
additional_metadata.
exclude_fields : list or None, optional
List of fields to exclude from the radar object. This is applied
after the file_field_names and field_names parameters.
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