/
tcxrecode.py
executable file
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/
tcxrecode.py
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#!/usr/bin/python
# take a tcx xml file from ridewithgps.com and recode it to gpx,
# using the notes to name the waypoints and filling out blanks
# build up a list of route points and comments
# go through points
# if corresponding comment, use comment. otherwise use last comment with incremented number
import matplotlib.pyplot as plt
import numpy as np
import string
import pickle
import os
import os.path
import sys
import math
import xml.sax
from xml.sax.saxutils import XMLFilterBase, XMLGenerator
class tcxfilter(XMLFilterBase):
def __init__(self, In, Out):
XMLFilterBase.__init__(self, In)
self.Out = Out
self.in_coursepoint = False
self.current_coursepoint = {'lat': None, 'lon': None, 'name': None}
self.element_type = ""
self.value = None
self.coursepoints = []
self.process_chars = False
self.route_name = None
def startElement(self, name, attrs):
if name == "Name" and self.route_name is None:
self.element_type = "TEXT"
self.process_chars = True
return
if name == "CoursePoint":
self.in_coursepoint = True
if not self.in_coursepoint:
return
if name == "LatitudeDegrees":
if self.current_coursepoint['lat'] is not None:
print ("ERROR: current trackpoint already has latitude set",
self.current_coursepoint['lat'])
self.element_type = "NUMBER"
elif name == "LongitudeDegrees":
if self.current_coursepoint['lon'] is not None:
print ("ERROR: current trackpoint already has longitude set",
self.current_coursepoint['lon'])
self.element_type = "NUMBER"
elif name == "Name":
if self.current_coursepoint['name'] is not None:
print ("ERROR: current trackpoint already has name set",
self.current_coursepoint['name'])
self.element_type = "TEXT"
else:
return
self.process_chars = True
self.value = None
def endElement(self, name):
if self.route_name is None:
if name == "Name":
self.route_name = self.value
self.process_chars = False
self.value = None
return
if name == "CoursePoint":
self.in_coursepoint = False
self.coursepoints.append(self.current_coursepoint)
self.current_coursepoint = {'lat': None, 'lon': None, 'name': None}
self.process_chars = False
elif name == "Course":
self.write_course()
elif name == "LatitudeDegrees":
self.current_coursepoint['lat'] = self.value
self.process_chars = False
elif name == "LongitudeDegrees":
self.current_coursepoint['lon'] = self.value
self.process_chars = False
elif name == "Name":
self.current_coursepoint['name'] = self.value
self.process_chars = False
def characters(self, content):
if not self.process_chars:
return
if self.element_type == "NUMBER":
self.value = float(content.strip())
elif self.element_type == "TEXT":
self.value = content.strip()
def write_course(self):
schema = {"xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
"xmlns": "http://www.topografix.com/GPX/1/1",
"version": "1.1",
"xsi:schemaLocation": "http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd",
"creator": "tcxrecode.py By Owen Williams"}
self.Out.startElement("gpx", schema)
self.Out.characters("\n ")
self.Out.startElement("rte", {})
self.Out.characters("\n" + " " * 2)
self.Out.startElement("name", {})
self.Out.characters(self.route_name)
self.Out.endElement("name")
last_name = "START"
for i, r in enumerate(self.coursepoints):
if r['name'] == "" or r['name'] is None:
r['name'] = last_name
r['name'] = self.rewrite_name(r)
# rewrite this item in the list so the name will be correct.
self.coursepoints[i] = r
self.write_element(r)
last_name = r['name']
self.Out.characters("\n ")
self.Out.endElement("rte")
self.Out.characters("\n")
self.Out.endElement("gpx")
def rewrite_name(self, coursepoint):
# First try original name
# If name is unique, hurray
# (UNDONE: Else if coords are close, break (use dupe name))
# Else loop (try new name)
# names must be upper case and at most 6 chars for my garmin etrex
basis = coursepoint['name'][0:6].upper().strip()
name = basis
for i in range(0, 9999):
if i > 0:
name = basis[0:6 - len(str(i))] + str(i)
# horrific, but who cares.
if name not in [n['name'] for n in self.coursepoints]:
return name
return "UNKNOWN"
def write_element(self, coursepoint):
attrs = {'lat': str(coursepoint['lat']),
'lon': str(coursepoint['lon'])}
self.Out.characters("\n" + " " * 2)
self.Out.startElement("rtept", attrs)
self.Out.characters("\n" + " " * 3)
self.Out.startElement("name", {})
self.Out.characters(coursepoint['name'])
self.Out.endElement("name")
self.Out.characters("\n" + " " * 2)
self.Out.endElement("rtept")
if __name__ == "__main__":
if len(sys.argv) < 3:
print "need input file and output folder"
print "waypoints are cached in ~/.gpswaypoints (DISABLED AND UNSUPPORTED ANYWAY)"
sys.exit(1)
# try:
# try to load waypoint cache
# f = open(os.getenv('HOME')+"/.gpswaypoints","r")
# contrib,waypoints = pickle.load(f)
# except:
# contrib = []
# waypoints = []
in_name = sys.argv[1]
ext_place = in_name.rfind('.')
out_name = os.path.join(sys.argv[2], in_name[0:ext_place]+"-recode.gpx")
try:
out = open(out_name, "w")
except Exception, e:
print "couldn't open output file", out_name
print str(e)
sys.exit(1)
In = xml.sax.make_parser()
Out = XMLGenerator(out)
filter_handler = tcxfilter(In, Out)
try:
filter_handler.parse(sys.argv[1])
except IOError, e:
print "couldn't open input file"
sys.exit(1)
# Sanity check: want no dupe points
seen = []
for p in filter_handler.coursepoints:
if p['name'] in seen:
print "WARNING: Duplicate point name: ", p['name']
seen.append(p['name'])
# Plot the route so we can double-check!
# TODO: refactor into a separate module so I can look at all my courses
route_x = np.float64([p['lon'] for p in filter_handler.coursepoints])
route_y = np.float64([p['lat'] for p in filter_handler.coursepoints])
plt.plot(route_x, route_y)
plt.show()
#f = open(os.getenv('HOME')+"/.gpswaypoints","w")
# save the cache
# if os.path.split(sys.argv[1])[1] not in contrib:
# contrib = contrib+[os.path.split(sys.argv[1])[1]]
# pickle.dump([contrib,waypoints],f)
# out.close()