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gpxjson.py
60 lines (43 loc) · 1.32 KB
/
gpxjson.py
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import sys
import json
from xml.dom import minidom
def gpxToJson(gpxFile):
return json.dumps(parseGpx(gpxFile))
def parseGpx(gpxFile):
dom = minidom.parse(gpxFile)
outputTracks = []
tracks = dom.getElementsByTagName("trk")
for track in tracks:
outputTracks.append(readTrack(track))
return outputTracks
def readTrack(track):
trackData = {}
if ( getTextValue(track, "name") ):
trackData = {"name": getTextValue(track, "name")}
trackData["segments"] = []
trackSegments = track.getElementsByTagName("trkseg")
for trackSegment in trackSegments:
trackData["segments"].append(readTrackSegment(trackSegment));
return trackData
def readTrackSegment(segment):
if not segment.hasChildNodes(): return []
points = []
for point in segment.childNodes:
if not hasattr(point, "tagName") or point.tagName != "trkpt":
continue
points.append(readTrackPoint(point))
return points
def readTrackPoint(point):
return {
"lat": point.getAttribute("lat"),
"lon": point.getAttribute("lon"),
"elevation": getTextValue(point, "ele"),
"time": getTextValue(point, "time")
}
## Utility
def getTextValue(node, tagName):
if node.getElementsByTagName(tagName):
return node.getElementsByTagName(tagName)[0].firstChild.nodeValue
else:
return 0
print gpxToJson(sys.argv[1])