Level2File

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

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

vol_hdr

The unpacked volume header

Type:

collections.namedtuple

sweeps

Data for each of the sweeps found in the file

Type:

list[tuple]

rda_status

Unpacked RDA status information, if found

Type:

collections.namedtuple, optional

maintenance_data

Unpacked maintenance data information, if found

Type:

collections.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:

collections.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)

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

NEXRAD Level 2 File

NEXRAD Level 2 File