def count_message_types_example():
"""
Example for decoding a file and counting the number of message per type
:return:
"""
with open("ais.exploratorium.edu", "r") as file:
message_types = dict()
for aline in file:
try:
msg = aline.rstrip("\n")
ais_data = pyAISm.decod_ais(msg) # Return a dictionnary
if 'type' in ais_data:
if ais_data['type']:
msg_type = ais_data['type']
if msg_type in message_types:
message_types[msg_type] += 1
else:
message_types[msg_type] = 1
except pyAISm.UnrecognizedNMEAMessageError as e:
pass
except pyAISm.BadChecksumError as e:
pass
except Exception as e:
print e
print('End of file')
print(message_types)
def decode_file_example():
"""
Example for decoding a file
:return:
"""
with open("ais.exploratorium.edu", "r") as file:
for aline in file:
try:
msg = aline.rstrip("\n")
ais_data = pyAISm.decod_ais(msg) # Return a dictionnary
ais_format = pyAISm.format_ais(ais_data) # A more human readable dictionnary
print(ais_format) # Accessing the value of the key
except pyAISm.UnrecognizedNMEAMessageError as e:
print e
except pyAISm.BadChecksumError as e:
print e
except Exception as e:
print e
print('End of file')
def decode_stream_example():
"""
Example for decoding an online data stream
:return:
"""
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("ais.exploratorium.edu", 80))
s.sendall("GET / HTTP/1.1\r\nHost: www.cnn.com\r\n\r\n".encode())
while (True):
msg = (s.recv(4096).decode('utf-8')).splitlines()
for m in msg:
try:
msg = m.rstrip("\n")
ais_data = pyAISm.decod_ais(msg) # Return a dictionnary
ais_format = pyAISm.format_ais(ais_data) # A more human readable dictionnary
print(ais_format) # Accessing the value of the key
except pyAISm.UnrecognizedNMEAMessageError as e:
print e
except pyAISm.BadChecksumError as e:
print e
except Exception as e:
print e
import pandas as pd
import numpy as np
import pyAISm
raw_data = pd.read_csv("CCG_AIS_Log_2018-05-01.csv", sep="\\")
# print(raw_data)
df = raw_data.iloc[:, 2]
print(df)
data = pd.DataFrame(columns=[
'type', 'repeat', 'mmsi', 'status', 'turn', 'speed', 'knots', 'accuracy',
'lon', 'lat', 'course', 'heading', 'second', 'maneuver', 'raim', 'radio'
])
for row in df:
if type(row) == float:
pass
else:
decoded = pyAISm.decod_ais(row)
formating = pyAISm.format_ais(decoded)
data.append(formating, ignore_index=True)
decoded_data = data.to_csv("CCG_AIS_Log_2018-05-01_DECODED.csv")
import pyAISm
string = "\c:1525143369,C:359,s:P-Parke*6F\!AIVDM,1,1,8,B,15O<@N001sG:hgHL6F?m;T6D00S@,0*7C"
a = string.split("\\")
ais_data = pyAISm.decod_ais(a[2])
ais_format = pyAISm.format_ais(ais_data)
print(ais_format)