srtm.py/gpxelevations at master · GeospatialPython/srtm.py · GitHub

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#!/usr/bin/env python

# -*- coding: utf-8 -*-

import pdb

import logging as mod_logging

import argparse as mod_argparse

import gpxpy as mod_gpxpy

import srtm as mod_srtm

parser = mod_argparse.ArgumentParser(

description='Adds elevation to GPX files')

parser.add_argument('-o', '--overwrite', action='store_true', default=False,

help='Overwrite existing elevations (otherwise will add elevations only where not yet present)')

parser.add_argument('-p', '--approximate', action='store_true', default=False,

help='Approximate elevations with neighbour point elevations')

parser.add_argument('-s', '--smooth', action='store_true', default=False,

help='Smooth elevations')

parser.add_argument('-c', '--calculate', action='store_true', default=False,

help='Calculate elevations (but don\'t change the GPX file')

parser.add_argument('-f', '--file', default=None, type=str,

help='Output filename')

parser.add_argument('-v', '--verbose', action='store_true', default=False,

help='Verbose output')

parser.add_argument('gpx_files', nargs='*', help='GPX files')

args = parser.parse_args()

if args.verbose:

mod_logging.basicConfig(level=mod_logging.DEBUG,

format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s')

geo_elevation_data = mod_srtm.get_data()

def update_gpx(gpx):

geo_elevation_data.add_elevations(gpx, only_missing=not args.overwrite, smooth=args.approximate)

for gpx_file in args.gpx_files:

with open(gpx_file) as f:

gpx = mod_gpxpy.parse(f.read())

update_gpx(gpx)

if args.smooth:

print 'Smoothing...'

gpx.smooth(vertical=True, horizontal=False)

print 'Smoothing... done'

file_name = args.file

if not file_name:

if gpx_file.lower().endswith('.gpx' ):

file_name = gpx_file[:-4] + '_with_elevations.gpx'

else:

file_name = 'gpx_with_elevations.gpx'

with open(file_name, 'w') as output_f:

output_f.write(gpx.to_xml())

print 'Written to %s' % file_name

srtm.py/gpxelevations at master · GeospatialPython/srtm.py · GitHub

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