def unpack(row):
'''
Unpacks a list of strings into a GPS tuple
@return: a GPS tuple (ts, ((lat, lon), (x, y), alt, spd)).
'''
ts = io.as_seconds(row[1].strip(), row[2].strip(), '%d-%m-%Y', '%H:%M:%S')
lat = float(row[6].strip())
lon = float(row[7].strip())
x = int(row[10].strip())
y = int(row[11].strip())
a = int(row[8].strip())
s = int(row[9].strip())
return (ts, (lat, lon), (x, y), a, s)
def parse_data_line(line):
# Get line parts
(pid, lParts) = __split_line(line)
try:
# Parse latitude
latStr = '{:08d}'.format(int(lParts[0]))
i = 2 if int(latStr) > 0 else 3
latD = int(latStr[:i])
latDM = float(latStr[i:]) / 10000.0
latDMS = coord.addSeconds(latD, latDM)
log.debug('[GSDLoader] Latitude: %s->%s->%s->%s', lParts[0], latStr, (latD, latDM), latDMS)
(latD, latM, latS) = latDMS
# Parse longitude
lonStr = '{:08d}'.format(int(lParts[1]))
i = 3 if int(lonStr) > 0 else 4
lonD = int(lonStr[:i])
lonDM = float(lonStr[i:]) / 10000.0
lonDMS = coord.addSeconds(lonD, lonDM)
log.debug('[GSDLoader] Longitude: %s->%s->%s->%s', lParts[1], lonStr, (lonD, lonDM), lonDMS)
(lonD, lonM, lonS) = lonDMS
# Calculate coordinates
dms = coord.DMSCoordinate(latD, latM, latS, lonD, lonM, lonS)
log.debug('[GSDLoader] DMS: %s', dms)
wgs = coord.DMStoWGS(dms)
log.debug('[GSDLoader] WGS: %s', wgs)
# Latitude & Longitude
lat = wgs.getLatitudeDegrees()
lon = wgs.getLongitudeDegrees()
# Cartesian X & Y
if convert_coords:
utm = coord.WGStoUTM(wgs)
x = utm.x
y = utm.y
else:
x = y = 0
# Date & Time
t = '{:6d}'.format(int(lParts[2]))
d = '{:6d}'.format(int(lParts[3]))
ts = int(io.as_seconds(d, t))
# Speed & Altitude
spd = int(lParts[4]) / 100.0
alt = int(lParts[5]) / 10000
except ValueError:
log.error('Could not parse point {0}', pid)
# Build up data item
return (ts, (lat, lon), (x, y), alt, spd)
