Level2File

class metpy.io.Level2File(filename, *, has_volume_header=True)[source]

Handle reading the NEXRAD Level 2 data and its various messages.

This class attempts to decode every byte that is in a given data file. It supports both external compression, as well as the internal BZ2 compression that is used.

stid

The ID of the radar station

Type

str

dt

The date and time of the data

Type

Datetime instance

vol_hdr

The unpacked volume header

Type

namedtuple

sweeps

Data for each of the sweeps found in the file

Type

list of tuples

rda_status

Unpacked RDA status information, if found

Type

namedtuple, optional

maintenance_data

Unpacked maintenance data information, if found

Type

namedtuple, optional

maintenance_data_desc

Descriptions of maintenance data fields, if maintenance data present

Type

dict, optional

vcp_info

Unpacked VCP information, if found

Type

namedtuple, optional

clutter_filter_bypass_map

Unpacked clutter filter bypass map, if present

Type

dict, optional

rda

Unpacked RDA adaptation data, if present

Type

dict, optional

rda_adaptation_desc

Descriptions of RDA adaptation data, if adaptation data present

Type

dict, optional

Notes

The internal data structure that things are decoded into is still to be determined.

Create instance of Level2File.

Parameters

filename (str or file-like object) – If str, the name of the file to be opened. Gzip-ed files are recognized with the extension ‘.gz’, as are bzip2-ed files with the extension bz2 If filename is a file-like object, this will be read from directly.

Attributes Summary

AR2_BLOCKSIZE

CTM_HEADER_SIZE

MISSING

RANGE_FOLD

data_block_fmt

msg15_code_map

msg1_fmt

msg2_additional_fmt

msg2_fmt

msg31_data_hdr_fmt

msg31_el_const_fmt

msg31_vol_const_fmt

msg_hdr_fmt

rad_const_fmt_v1

rad_const_fmt_v2

vcp_el_fmt

vcp_fmt

vol_hdr_fmt

Methods Summary

__init__(filename, *[, has_volume_header])

Create instance of Level2File.

Attributes Documentation

AR2_BLOCKSIZE = 2432
CTM_HEADER_SIZE = 12
MISSING = nan
RANGE_FOLD = nan
data_block_fmt = <metpy.io._tools.NamedStruct object>
msg15_code_map = {0: 'Bypass Filter', 1: 'Bypass map in Control', 2: 'Force Filter'}
msg1_fmt = <metpy.io._tools.NamedStruct object>
msg2_additional_fmt = <metpy.io._tools.NamedStruct object>
msg2_fmt = <metpy.io._tools.NamedStruct object>
msg31_data_hdr_fmt = <metpy.io._tools.NamedStruct object>
msg31_el_const_fmt = <metpy.io._tools.NamedStruct object>
msg31_vol_const_fmt = <metpy.io._tools.NamedStruct object>
msg_hdr_fmt = <metpy.io._tools.NamedStruct object>
rad_const_fmt_v1 = <metpy.io._tools.NamedStruct object>
rad_const_fmt_v2 = <metpy.io._tools.NamedStruct object>
vcp_el_fmt = <metpy.io._tools.NamedStruct object>
vcp_fmt = <metpy.io._tools.NamedStruct object>
vol_hdr_fmt = <metpy.io._tools.NamedStruct object>

Methods Documentation

__init__(filename, *, has_volume_header=True)[source]

Create instance of Level2File.

Parameters

filename (str or file-like object) – If str, the name of the file to be opened. Gzip-ed files are recognized with the extension ‘.gz’, as are bzip2-ed files with the extension bz2 If filename is a file-like object, this will be read from directly.

Examples using metpy.io.Level2File

GiniFile Level3File