def get_2d_coordinate_list(gpxpy_instance):
lat_list = []
lon_list = []
for latitude, longitude, elevation in iter_coordinates(gpxpy_instance):
lat_list.append(latitude)
lon_list.append(longitude)
if not lat_list or not lon_list:
raise GpxDataError("No track points in file!")
return (lat_list, lon_list)
def get_identifier(gpxpy_instance):
"""
:return: Identifier named tuple
"""
time_bounds = gpxpy_instance.get_time_bounds()
try:
first_track = gpxpy_instance.tracks[0]
except IndexError:
raise GpxDataError("Can't get first track")
try:
first_segment = first_track.segments[0]
except IndexError:
raise GpxDataError("Can't get first segment")
try:
first_point = first_segment.points[0]
except IndexError:
raise GpxDataError("Can't get first segment point")
try:
last_track = gpxpy_instance.tracks[-1]
except IndexError:
raise GpxDataError("Can't get last track")
try:
last_segment = last_track.segments[-1]
except IndexError:
raise GpxDataError("Can't get last segment")
try:
last_point = last_segment.points[-1]
except IndexError:
raise GpxDataError("Can't get last segment point")
return Identifier(
time_bounds.start_time,
first_point.latitude,
first_point.longitude,
time_bounds.end_time,
last_point.latitude,
last_point.longitude,
)