def __init__(self):
tkinter.Tk.__init__(self)
self.nmeatracker = nmea.NMEAtracker()
self.aistracker = ais.AISTracker()
self.messagelog = allmessages.AISMessageLog()
self.protocol("WM_DELETE_WINDOW", self.quit)
self.title('PY AIS NMEA - ' + version.VERSION)
self.statuslabel = tkinter.Label(self, text='', bg='light grey')
self.statuslabel.pack(fill=tkinter.X)
self.tabcontrol = TabControl(self)
self.tabcontrol.pack(expand=1, fill='both')
self.top_menu()
self.mpq = multiprocessing.Queue()
self.updateguithread = None
self.refreshguithread = None
self.serverprocess = None
self.serverrunning = False
self.stopevent = threading.Event()
self.forwardsentences = tkinter.BooleanVar()
self.forwardsentences.set(0)
self.kmzlivemap = tkinter.BooleanVar()
self.kmzlivemap.set(0)
self.livemap = None
self.timingsources = []
self.currentupdatethreadid = None
self.currentrefreshthreadid = None
def aistracker_from_file(filepath, debug=False, timingsource=None):
"""
open a file, read all nmea sentences and return an ais.AISTracker object
Note:
if debug is set then individual messages are saved into the messagelog
Args:
filepath(str): full path to nmea file
debug(bool): save all message payloads and decoded attributes into
messagelog
timingsource(list): MMSIs of the base stations you wish to use
as a time reference, type 4 base station reports
from this base station will be used for times.
default is None and all base stations will be used
for times. list of strings
Raises:
NoSuitableMessagesFound: if there are no AIS messages in the file
Returns:
aistracker(ais.AISTracker): object that keeps track of all the
ships we have seen
nmeatracker(nmea.NMEAtracker): object that organises the nmea sentences
messagelog(allmessages.AISMessageLog): object with all the AIS messages
"""
messagelog = allmessages.AISMessageLog()
aistracker = ais.AISTracker()
aistracker.timingsource = timingsource
nmeatracker = nmea.NMEAtracker()
msgnumber = 1
for line in open_file_generator(filepath):
try:
payload = nmeatracker.process_sentence(line)
if payload:
msg = aistracker.process_message(payload)
if debug:
messagelog.store(msgnumber, payload, msg)
msgnumber += 1
except (nmea.NMEAInvalidSentence, nmea.NMEACheckSumFailed,
ais.UnknownMessageType, ais.InvalidMMSI, binary.NoBinaryData,
IndexError) as err:
AISLOGGER.debug(str(err))
continue
if aistracker.messagesprocessed == 0:
raise NoSuitableMessagesFound('No AIS messages detected in this file')
return (aistracker, nmeatracker, messagelog)
def aistracker_from_json(filepath, debug=True):
"""
get an aistracker object from a debug messages JSON that was previously
exported from pyaisnmea
Args:
filepath(str): full path to json file
debug(bool): save all message payloads and decoded attributes into
messagelog
Raises:
NoSuitableMessagesFound: if there are no AIS messages in the file
Returns:
aistracker(ais.AISTracker): object that keeps track of all the
ships we have seen
messagelog(allmessages.AISMessageLog): object with all the AIS messages
"""
messagelog = allmessages.AISMessageLog()
aistracker = ais.AISTracker()
msgnumber = 1
for line in open_file_generator(filepath):
try:
linemsgdict = json.loads(line)
payload = linemsgdict['payload']
msgtime = linemsgdict['rxtime']
msg = aistracker.process_message(payload, timestamp=msgtime)
if debug:
messagelog.store(msgnumber, payload, msg)
msgnumber += 1
except (ais.UnknownMessageType, ais.InvalidMMSI,
json.decoder.JSONDecodeError, KeyError,
binary.NoBinaryData) as err:
AISLOGGER.debug(str(err))
continue
if aistracker.messagesprocessed == 0:
raise NoSuitableMessagesFound('No AIS messages detected in this file')
return (aistracker, messagelog)
def aistracker_from_csv(filepath, debug=True):
"""
get an aistracker object from a debug messages CSV that was previously
exported from pyaisnmea
Args:
filepath(str): full path to csv file
debug(bool): save all message payloads and decoded attributes into
messagelog
Raises:
NoSuitableMessagesFound: if there are no AIS messages in the file
Returns:
aistracker(ais.AISTracker): object that keeps track of all the
ships we have seen
messagelog(allmessages.AISMessageLog): object with all the AIS messages
"""
messagelog = allmessages.AISMessageLog()
aistracker = ais.AISTracker()
msgnumber = 1
for line in open_file_generator(filepath):
try:
linelist = line.split(',')
if kml.DATETIMEREGEX.match(linelist[3]):
payload = linelist[0]
msgtime = linelist[3]
msg = aistracker.process_message(payload, timestamp=msgtime)
if debug:
messagelog.store(msgnumber, payload, msg)
msgnumber += 1
except (ais.UnknownMessageType, ais.InvalidMMSI, IndexError,
binary.NoBinaryData) as err:
AISLOGGER.debug(str(err))
continue
if aistracker.messagesprocessed == 0:
raise NoSuitableMessagesFound('No AIS messages detected in this file')
return (aistracker, messagelog)