gpx-parser 0.0.2

Simple parser for gpx tracks, segments, and points with latitude, longitude, and time.

gpx-parser

Simple parser for loading basic information about track points from .gpx files. Inside the gpx tag parser only extracts trk, trkseg, and trkpt tags. All other tags are ignored. Resulting GPX structure is a container with track list. Each track is in it's turn a list of segments, and segment is a list of track points, the leaf elements of the structure. GPX, GPXTrack, an GPXTrackSegment support most of the list methods.

Prerequisites

Python 3.4 or higher

xml or lxml

Examples of usage

import gpx_parser as parser

with open('file_name', 'r') as gpx_file:
    gpx = parser.parse(gpx_file)
print("{} tracks loaded".format(len(gpx)))

for track in gpx:
    print('Track with {} segments and {} points'.
          format(len(track), track.get_points_no()))
    for segment in track:
        print('Segment with %s points % len(segment))
        for point in segment:
            print(point)

GPX

gpx.tracks                   # list of tracks
gpx.version                  # str or None
gpx.creator                  # str or None
gpx.points                   # list of all points from all tracks

len(gpx))                    # number of tracks in gpx
gpx.get_points_no()          # total number of points in all segments of all tracks
gpx[0]                       # 0th track, same as gpx.tracks[0]
gpx[1:3]                     # = gpx.tracks[1:3]
gpx.contains(track)          # = gpx.tracks.contains(track)
gpx.append(track)            # = gpx.tracks.append(track)
gpx.extend(tracks)           # = gpx.tracks.extend(tracks)
gpx.remove(track)            # = gpx.tracks.remove(tracks)
gpx.clone()                  #  returns deepcoopy of the object   

gpx.to_xml()                 # str, point with xml tags
gpx.length_2d()              # total 2d  distance of the track
gpx.get_bounds()             # min and max latitude and logitude
gpx.get_time_bounds()        # start and end time
gpx.walk()                   # generator, yields (point, track_num, segment_num, point_num)

GPXTrack

track.name                 # str or None
track.number               # int or None
track.segments             # list of all segments in the track
track.points               # list of all points from all segments

len(track)                 # number of segments in the track
track[0]                   #
track[::2]                 # shorcuts for
track.contains(segment)    # track.segments
track.append(segment)      #
track.extend(segmengs)     #
track.remove(segment)      #


track.to_xml()             #
track.length_2d()          # same as for gpx
track.get_bounds()         #
track.get_time_bounds()    #
track.get_points_no()      #
track.clone()              #

track.get_duration()      # float, duration of track in seconds
track.remove_empty()      # removes empty segments from the track

GPXTrackSegment

 seg.points               # list of points in the segment

 len(seg)                 # 
 seg[0]                   #
 seg[::2]                 # shortcuts for
 seg.contains(segment)    # seg.points
 seg.append(segment)      #
 seg.extend(segmengs)     #
 seg.remove(segment)      #


 seg.to_xml()             #
 seg.length_2d()          # same as for gpx
 seg.get_bounds()         #
 seg.get_time_bounds()    #
 seg.get_points_no()      #
 seg.clone()              # 

 seg.get_duration()       # float, duration of track in seconds
 seg.remove_empty()       # removes empty segments from the track

GPXTrackPoint

point.latitude         
point.longitude        
point.time             

point.to_xml()         

point.distance_2d(other_point)          # distance in meters
point.time_difference(other_point)      # time in seconds, or None, if one of the points doesn't have time attribute.
point.speed_between(other_point)        # speed, i m/s, or None, if one of the points doesn't have time attribute.