def major_data(self, inval):
"""
read in and add major data to the class
"""
inval = FIREdata.hex2int(inval)
dt = FIREdata.dat2time(inval[0:8])
d1 = FIREdata.dat2time(inval[ majorTimelen:])
self.dat['Epoch'] = dm.dmarray.append(self.dat['Epoch'], dt)
self.dat['Time'] = dm.dmarray.append(self.dat['Time'], d1)
def majorStamps(self):
"""
return the major time stamps
"""
major = []
for v in self:
if v.pktnum == '01': # this is a major stamp
major.append(v)
stamps = []
for v in major:
stamps.append(FIREdata.dat2time(FIREdata.hex2int(v.data[:8])))
return stamps
def __init__(self, inpage, h):
len1 = datalen+majorTimelen
len2 = datalen+minorTimelen
dat = FIREdata.hex2int(inpage)
if len(inpage) == len1: # major
try:
self.t0 = FIREdata.dat2time(dat[0:8])
self.major_data(dat)
except ValueError:
return
print("\tData at time {0} decoded".format(self[-1][0].isoformat()))
elif len(inpage) == len2: # minor
try:
self.minor_data(dat, h)
except ValueError:
return
def __init__(self, inpage):
len1 = datalen+majorTimelen
len2 = datalen+minorTimelen
dat = FIREdata.hex2int(inpage)
try:
self.t0 = FIREdata.dat2time(dat[0:8])
except ValueError:
return
self.major_data(dat[0:datalen+majorTimelen])
start = datalen+majorTimelen
# the index of the start of each FIRE data
for ii in range(start, len(dat), datalen+minorTimelen):
stop = ii+datalen+majorTimelen
try:
self.minor_data(dat[ii:stop])
except IndexError: # malformed data for some reason, skip it
print("Skipping malformed context: {0}".format(dat[ii:stop]))
# sort the data
self = sorted(self, key = lambda x: x[0])
def read(self, filename):
# need to have pages and packet information
packets = packet.BIRDpackets(filename)
"""
data times is at most one page
"""
previous_packet = None # holds the last packet
dataBuffer = [] # this holds the data form a packet as measurement may roll onto
# the next packet
firstPacket = False
for packet_ in packets:
"""
options in here:
1) new page starting with packet 01
2) new page with missing packet 01
3) current page with next packet
4) current page with missing packet
5) last packet of page at 13
6) last packet of a page with missing 13
"""
if packet_.pktnum == '01':
firstPacket = True
### option 2 ###
### option 1 ###
if previous_packet is None: # new page starting
dataBuffer = [] # clear the dataBuffer as we are starting a new page
previous_packet = packet_ # hang on to the last packet
print packet_
# this is a decodable page, start now
dataBuffer.extend(packet_.data) # grab the data out
# since p.pktnum == 01 this is a major time stamp, decode it.
else:
while len(dataBuffer) > 0:
if FIREdata.validDate(FIREdata.hex2int(dataBuffer[:majorTimelen])):
pass
else:
dataBuffer.pop(0)
### option 3 ###
### option 4 ###
"""
regardless of the packet if there is more data in the buffer we should
decode it and add it to the arrays
"""
while len(dataBuffer) >= minorLen:
tmp = [dataBuffer.pop(0) for v in range(majorLen)]
self.major_data(tmp)
# go through and remove duplicate times and data
print("Looking for duplicate measurements")
arr, dt_ind, return_inverse = np.unique(self.dat['Epoch'], return_index=True, return_inverse=True) # this is unique an sort
print("Found {0} duplicates of {1}".format(len(return_inverse)-len(dt_ind), len(return_inverse)))
self.dat['Epoch'] = arr
self.dat['Time'] = self.dat['Time'][dt_ind]
# populate Duration and Mode
self.dat['Mode'] = dm.dmarray.append(self.dat['Mode'], np.zeros(len(self.dat['Epoch']), dtype=int))
if firstPacket:
self.dat['Mode'][::2] = 1
dur = [FIREdata.total_seconds(v2 - v1) for v1, v2 in itertools.izip(self.dat['Epoch'], self.dat['Time'])]
self.dat['Duration'] = dm.dmarray.append(self.dat['Duration'], dur)
return self