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gpshelper.py
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#
# 17/02/2019
# Juan M. Casillas <[email protected]>
# https://github.com/juanmcasillas/gopro2gpx.git
#
# Released under GNU GENERAL PUBLIC LICENSE v3. (Use at your own risk)
#
from datetime import datetime
import time
import os
class GPSPoint:
def __init__(self, latitude=0.0, longitude=0.0, elevation=0.0, time=datetime.fromtimestamp(time.time()), speed=0.0):
self.latitude = latitude
self.longitude = longitude
self.elevation = elevation
self.time = time
self.speed = speed
# extensions
self.hr = 0
self.cad = 0
self.cadence = 0
self.temperature = 0
self.atemp = 0
self.power = 0
self.distance = 0
self.left_pedal_smoothness = 0
self.left_torque_effectiveness = 0
def UTCTime(timedata):
#
# time comes: 2014-05-30 20:11:27
# should be formatted to 2014-05-30T20:11:17Z
#
return timedata.strftime("%Y-%m-%dT%H:%M:%SZ")
def generate_GPX(points, trk_name="exercise"):
"""
Creates a GPX in 1.1 Format
"""
xml = '<?xml version="1.0" encoding="UTF-8"?>\r\n'
gpx_attr = [
'xmlns="http://www.topografix.com/GPX/1/1"' ,
'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"' ,
'xmlns:wptx1="http://www.garmin.com/xmlschemas/WaypointExtension/v1"' ,
'xmlns:gpxtrx="http://www.garmin.com/xmlschemas/GpxExtensions/v3"' ,
'xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v2"' ,
'xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3"' ,
'xmlns:trp="http://www.garmin.com/xmlschemas/TripExtensions/v1"' ,
'xmlns:adv="http://www.garmin.com/xmlschemas/AdventuresExtensions/v1"' ,
'xmlns:prs="http://www.garmin.com/xmlschemas/PressureExtension/v1"' ,
'xmlns:tmd="http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1"' ,
'xmlns:vptm="http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1"' ,
'xmlns:ctx="http://www.garmin.com/xmlschemas/CreationTimeExtension/v1"' ,
'xmlns:gpxacc="http://www.garmin.com/xmlschemas/AccelerationExtension/v1"',
'xmlns:gpxpx="http://www.garmin.com/xmlschemas/PowerExtension/v1"',
'xmlns:vidx1="http://www.garmin.com/xmlschemas/VideoExtension/v1"',
'creator="Garmin Desktop App"' ,
'version="1.1"' ,
'xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/WaypointExtension/v1 http://www8.garmin.com/xmlschemas/WaypointExtensionv1.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v2 http://www.garmin.com/xmlschemas/TrackPointExtensionv2.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd http://www.garmin.com/xmlschemas/ActivityExtension/v1 http://www8.garmin.com/xmlschemas/ActivityExtensionv1.xsd http://www.garmin.com/xmlschemas/AdventuresExtensions/v1 http://www8.garmin.com/xmlschemas/AdventuresExtensionv1.xsd http://www.garmin.com/xmlschemas/PressureExtension/v1 http://www.garmin.com/xmlschemas/PressureExtensionv1.xsd http://www.garmin.com/xmlschemas/TripExtensions/v1 http://www.garmin.com/xmlschemas/TripExtensionsv1.xsd http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1 http://www.garmin.com/xmlschemas/TripMetaDataExtensionsv1.xsd http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1 http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensionsv1.xsd http://www.garmin.com/xmlschemas/CreationTimeExtension/v1 http://www.garmin.com/xmlschemas/CreationTimeExtensionsv1.xsd http://www.garmin.com/xmlschemas/AccelerationExtension/v1 http://www.garmin.com/xmlschemas/AccelerationExtensionv1.xsd http://www.garmin.com/xmlschemas/PowerExtension/v1 http://www.garmin.com/xmlschemas/PowerExtensionv1.xsd http://www.garmin.com/xmlschemas/VideoExtension/v1 http://www.garmin.com/xmlschemas/VideoExtensionv1.xsd"'
]
# BASECAMP:
# - doesn't support hr=0
# - doesn't support tags:
# <gpxtpx:speed>1.0</gpxtpx:speed>
# <gpxtpx:distance>0</gpxtpx:distance>
xml += "<gpx " + " ".join(gpx_attr) + ">\r\n"
xml += "<metadata>\r\n"
xml += " <time>%s</time>\r\n" % UTCTime(points[0].time) # first point !
xml += "</metadata>\r\n"
xml += "<trk>\r\n"
xml += " <name>%s</name>\r\n" % trk_name
xml += "<trkseg>\r\n"
#
# add the points
#
# <trkpt lat="40.327363333" lon="-3.760243333">
# <time>2014-06-26T18:40:45Z</time>
# <fix>2d</fix>
# <sat>7</sat>
# </trkpt>
for p in points:
hr = p.hr
cadence = p.cad
speed = p.speed
distance = p.distance
pts = ' <trkpt lat="%s" lon="%s">\r\n' % (p.latitude, p.longitude)
pts += ' <ele>%s</ele>\r\n' % p.elevation
pts += ' <time>%s</time>\r\n' % UTCTime(p.time)
pts += ' <extensions>\r\n'
pts += ' <gpxtpx:TrackPointExtension>\r\n'
pts += ' <gpxtpx:hr>%s</gpxtpx:hr>\r\n' % hr
pts += ' <gpxtpx:cad>%s</gpxtpx:cad>\r\n' % cadence
pts += ' <gpxtpx:speed>%s</gpxtpx:speed>\r\n' % speed
pts += ' <gpxtpx:distance>%s</gpxtpx:distance>\r\n' % distance
pts += ' </gpxtpx:TrackPointExtension>\r\n'
pts += ' <gpxx:TrackPointExtension/>\r\n' ## new
#pts += ' <power>%s</power>\r\n' % power
#pts += ' <<gpxtpx:temp>%s</temp>\r\n' % temperature
pts += ' </extensions>\r\n'
pts += ' </trkpt>\r\n'
xml += pts
xml += "</trkseg>\r\n"
xml += "</trk>\r\n"
xml += "</gpx>\r\n"
return xml
def generate_KML(gps_points):
"""
use this for color
http://www.zonums.com/gmaps/kml_color/
"""
kml_template = """<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2"> <Document>
<name>Demo</name>
<description>Description Demo</description>
<Style id="yellowLineGreenPoly">
<LineStyle>
<color>FF1400BE</color>
<width>4</width>
</LineStyle>
<PolyStyle>
<color>7f00ff00</color>
</PolyStyle>
</Style>
<Placemark>
<name>Track Title</name>
<description>Track Description</description>
<styleUrl>#yellowLineGreenPoly</styleUrl>
<LineString>
<extrude>1</extrude>
<tessellate>1</tessellate>
<altitudeMode>absolute</altitudeMode>
<coordinates>
%s
</coordinates>
</LineString>
</Placemark>
</Document>
</kml>
"""
lines = []
for p in gps_points:
s = "%s,%s,%s" % (p.longitude, p.latitude, p.elevation)
lines.append(s)
coords = os.linesep.join(lines)
kml = kml_template % coords
return(kml)