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obstacle2osm.py
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obstacle2osm.py
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#!/usr/bin/env python3
# -*- coding: utf8
# obstacle2osm
# Converts aviation obstacles from Kartverket GML files for import/update in OSM
# Usage: obstacle2.osm <county> [-line]
# Option: "-line" to output power lines
# Creates gojson file with name "Luftfartshinder_" + county + ".osm"
import html
import time
import sys
import urllib.request
import json
import zipfile
from io import BytesIO
from xml.etree import ElementTree
#sys.path.append('../gml/')
import gml2osm
from gml2osm import message
version = "2.0.0"
# Tagging per obstacle type
tagging_table = {
# Masts (NrlMast)
'belysningsmast': ['man_made=mast', 'tower:type=lighting'],
'lavspentmast': ['highway=street_lamp'],
'ledningsmast': ['power=pole'],
'målemast': ['man_made=mast', 'tower:type=monitoring'],
'radiomast': ['man_made=antenna'],
'taubanemast': ['aerialway=pylon'],
'telemast': ['man_made=mast', 'tower:type=communication'],
# Points (NrlPunkt)
'bygning': ['building=yes'],
'flaggstang': ['man_made=flagpole'],
'forankretBallong': [],
'fornøyelsesparkinnretning': ['man_made=tower'],
'fyrtårn': ['man_made=lighthouse'],
'hopptårn': ['man_made=tower', 'piste:type=ski_jump'],
'kjøletårn': ['man_made=tower', 'tower_type=cooling'],
'kontrolltårn': ['man_made=tower', 'tower:type=airport_control'],
'kraftverk': ['power=plant'],
'kran': ['man_made=crane'],
'kuppel': ['man_made=tower', 'tower:construction=dome'],
'monument': ['man_made=tower', 'tower:type=monument'],
'navigasjonshjelpemiddel': ['aeroway=navigationaid'],
'petroleumsinnretning': [],
'pipe': ['man_made=chimney'],
'raffineri': ['man_made=tower'],
'silo': ['man_made=silo'],
'sprengningstårn': [],
'tank': ['man_made=storage_tank'],
'tårn': ['man_made=tower'],
'vanntårn': ['man_made=storage_tank', 'content=water'],
'vindturbin': ['power=generator', 'generator:source=wind', 'generator:method=wind_turbine', 'generator:type=horizontal_axis'],
# Lines (NrlLinje)
'bru': ['man_made=bridge'],
'demning': ['waterway=dam'],
'gjerde': ['barrier=fence'],
# Aerial lines (NrlLuftspenn)
'bardun': ['man_made=guy'],
'gondolbane': ['aerialway=gondola'],
'ledning': ['power=line'],
'løypestreng': ['aerialway=goods'],
'skitrekk': ['aerialway=draglift'],
'stolheis': ['aerialway=chairlift'],
'taubane': ['aerialway=cable_car'],
'vaier': ['man_made=guy'],
'zipline': ['aerialway=zip_line'],
# Flate (NrlFlate)
'kontaktledning': ['railway=rail'],
'transformatorstasjon': ['power=substation', 'power=transformer'],
# Other
'annet': []
}
# Determine obstacle type
def get_obstacle_type(obstacle):
for object_type in ["punkt", "mast", "luftspenn", "linje", "flate"]:
if object_type + "Type" in obstacle:
return obstacle[ object_type + "Type" ]
return None
# Tag obstacle
def tag_obstacle(feature):
obstacle = feature['data']
tags = {}
obstacle_type = get_obstacle_type(obstacle)
# Name and id
if "navn" in obstacle:
name = obstacle['navn']
if name == name.upper():
name = name.title()
if name and not ("luftfartshinderId" in obstacle and name == obstacle['luftfartshinderId']):
tags['description'] = name
tags['OBSTACLE_TYPE'] = obstacle_type
tags['STATUS'] = obstacle['status']
if "luftfartshinderId" in obstacle:
tags['ref:hinder'] = obstacle['luftfartshinderId']
# Height/elevation, coordinates
height = None
if "vertikalAvstand" in obstacle:
height = float(obstacle['vertikalAvstand'])
tags['height'] = "%i" % height
if feature['type'] == "Point":
z = feature['coordinates'][2]
feature['coordinates'] = ( feature['coordinates'][0], feature['coordinates'][1] ) # Strip z
else:
z = max(point[2] for point in feature['coordinates']) # List
feature['coordinates'] = [ ( point[0], point[1] ) for point in feature['coordinates']]
top_ele = None
if "høydereferanse" in obstacle:
if obstacle['høydereferanse'] == "topp":
if height is not None:
z = z - height
else:
top_ele = z
z = None
if z:
tags['ele'] = "%i" % z
elif top_ele:
tags['top_ele'] = "%i" % top_ele
# Dates
if "datafangstdato" in obstacle:
tags['DATE_SURVEY'] = obstacle['datafangstdato'][:10]
if "registreringsdato" in obstacle:
tags['DATE_CREATE'] = obstacle['registreringsdato'][:10]
if "oppdateringsdato" in obstacle:
tags['DATE_UPDATE'] = obstacle['oppdateringsdato'][:10]
# Feature tagging (man_made, tower:type etc)
if obstacle_type in tagging_table:
for tag in tagging_table[ obstacle_type ]:
tag_split = tag.split("=")
tags[ tag_split[0] ] = tag_split[1]
else:
message ("Object type '%s' not found in tagging table\n" % obstacle_type)
# Light tagging
if "luftfartshinderlyssetting" in obstacle:
light = obstacle['luftfartshinderlyssetting']
tags['aeroway:light'] = "obstacle" # Only light tag if type is "lyssatt"
if light in ['blinkendeRødt','fastRødt','lavintensitetTypeA','lavintensitetTypeB','mellomintensitetTypeB','mellomintensitetTypeC']:
tags['aeroway:light:colour'] = "red"
elif light in ['blinkendeHvitt','fastHvitt','mellomintensitetTypeA','høyintensitetTypeA','høyintensitetTypeB']:
tags['aeroway:light:colour'] = "white"
if light in ['fastRødt','fastHvitt','lavintensitetTypeA','lavintensitetTypeB','mellomintensitetTypeC']:
tags['aeroway:light:character'] = "fixed"
elif light in ['blinkendeRødt','blinkendeHvitt','mellomintensitetTypeA','mellomintensitetTypeB','høyintensitetTypeA','høyintensitetTypeB']:
tags['aeroway:light:character'] = "flashing"
elif light == "belystMedFlomlys":
tags['aeroway:light:character'] = "floodlight"
if "lavintensitet" in light:
tags['aeroway:light:intensity'] = "low"
elif "mellomintensitet" in light:
tags['aeroway:light:intensity'] = "medium"
elif "høyintensitet" in light:
tags['aeroway:light:intensity'] = "high"
if "TypeA" in light:
tags['aeroway:light:icao_type'] = "A"
elif "TypeB" in light:
tags['aeroway:light:icao_type'] = "B"
elif "TypeC" in light:
tags['aeroway:light:icao_type'] = "C"
return tags
# Combine connected lines
def combine_lines(line_groups):
# Connect power lines
lines = []
for group, segments in iter(line_groups.items()):
remaining = segments[:]
new_line = []
while remaining:
next_feature = remaining.pop()
new_line = next_feature['coordinates'][:]
min_ele = min(point[2] for point in next_feature['coordinates'])
max_ele = max(point[2] for point in next_feature['coordinates'])
if "vertikalAvstand" in next_feature['data']:
min_height = float(next_feature['data']['vertikalAvstand'])
max_height = float(next_feature['data']['vertikalAvstand'])
no_height = False
else:
min_height = 9999
max_height = -9999
no_height = True
if "høydereferanse" in next_feature['data']:
ele_reference = next_feature['data']['høydereferanse']
no_reference = False
else:
ele_reference = ""
no_reference = True
found = True
while remaining and found and not ("luftspennType" in next_feature['data'] and next_feature['data']['luftspennType'] == "bardun"):
found = False
new_line_set = set({new_line[0], new_line[-1]})
for i, segment in enumerate(remaining[:]):
if new_line_set.intersection(segment['coordinates']):
# Match without z coordinate, which in rare cases might differ
if segment['coordinates'][0] == new_line[-1]:
new_line.extend(segment['coordinates'][1:])
elif segment['coordinates'][-1] == new_line[-1]:
new_line.extend(list(reversed(segment['coordinates']))[1:])
elif segment['coordinates'][-1] == new_line[0]:
new_line = segment['coordinates'] + new_line[1:]
elif segment['coordinates'][0] == new_line[0]:
new_line = list(reversed(segment['coordinates'])) + new_line[1:]
min_ele = min(min_ele, min(point[2] for point in segment['coordinates']))
max_ele = max(max_ele, max(point[2] for point in segment['coordinates']))
if "vertikalAvstand" in segment['data']:
min_height = min(min_height, float(segment['data']['vertikalAvstand']))
max_height = max(max_height, float(segment['data']['vertikalAvstand']))
else:
no_height = True
if "høydereferanse" not in segment['data'] or segment['data']['høydereferanse'] != ele_reference:
no_reference = True
del remaining[i]
found = True
break
tags = {}
if not no_height and min_height == max_height:
tags['height'] = "%i" % min_height
if not no_reference and min_ele == max_ele:
if ele_reference == "topp":
if not no_height and min_height == max_height:
tags['ele'] = "%i" % (min_ele - min_height)
else:
tags['top_ele'] = "%i" % min_ele
else:
tags['ele'] = "%i" % min_ele
new_feature = {
'object': next_feature['object'],
'type': 'LineString',
'data': next_feature['data'],
'tags': tags,
'coordinates': new_line
}
lines.append(new_feature)
return lines
# Create collection of obstacles, excluding power lines and power masts
def create_obstacles(features):
line_groups = {}
obstacle_points = []
last_date = ""
# Find all point obstacles
for feature in features:
obstacle = feature['data']
obstacle_type = get_obstacle_type(obstacle)
if obstacle['status'] in ["eksisterende", "planlagtOppført"] and obstacle_type not in ["ledning", "ledningsmast"]:
if feature['type'] == "Point":
feature['tags'] = tag_obstacle(feature)
obstacle_points.append(feature)
else:
ref = obstacle_type
if "luftfartshinderId" in feature:
ref += obstacle['luftfartshinderId'].strip()
if ref not in line_groups:
line_groups[ ref ] = []
line_groups[ ref ].append(feature)
last_date = max(last_date, obstacle['oppdateringsdato'])
# Concatenate features from same id
obstacle_lines = combine_lines(line_groups)
for line in obstacle_lines:
tags = tag_obstacle(line)
for key in ['ele', 'top_ele', 'height']:
if key in tags:
del tags[ key ]
line['tags'].update(tags) # Keep existing ele/height tags
message ("\t%i obstacle lines, %i points\n" % (len(obstacle_lines), len(obstacle_points)))
message ("\tLast update: %s\n" % last_date[:10])
return obstacle_points + obstacle_lines
# Create network of power lines including pylons
def create_powerlines(features):
# Sort all lines according to name
message ("Combine power lines ...\n")
line_groups = {}
power_masts = []
last_date = ""
for feature in features:
obstacle = feature['data']
obstacle_type = get_obstacle_type(obstacle)
if obstacle['status'] in ["eksisterende", "planlagtOppført"]:
if obstacle_type == "ledning":
name = ""
if "navn" in obstacle:
name = obstacle['navn'].strip()
if name not in line_groups:
line_groups[ name ] = []
line_groups[ name ].append(feature)
last_date = max(last_date, obstacle['oppdateringsdato'])
elif obstacle_type == "ledningsmast":
feature['tags'] = tag_obstacle(feature)
tags = {}
for key, value in iter(feature['tags'].items()):
if key in ["power", "height", "ele", "top_ele"] or "light" in key: # Only most important tags
tags[ key ] = value
feature['tags'] = tags
power_masts.append(feature)
last_date = max(last_date, obstacle['oppdateringsdato'])
power_lines = combine_lines(line_groups)
for line in power_lines:
line_name = ""
if "navn" in line['data']:
line_name = line['data']['navn']
if "luftfartshinderId" in line['data'] and line_name == line['data']['luftfartshinderId']:
line_name = ""
if line_name == line_name.upper():
line_name = line_name.title()
line['tags'] = {
'power': 'line',
'name': line_name,
'STATUS': line['data']['status'],
'OBSTACLE_TYPE': line['data']['luftspennType']
}
for key in [("DATE_SURVEY", "datafangstdato"), ("DATE_CREATE", "registreringsdato"), ("DATE_UPDATE", "oppdateringsdato")]:
if key[1] in line['data']:
line['tags'][ key[0] ] = line['data'][ key[1] ][:10]
message ("\t%i power lines, %i masts\n" % (len(power_lines), len(power_masts)))
message ("\tLast update: %s\n" % last_date[:10])
return power_masts + power_lines
# Main program
if __name__ == '__main__':
message ("\n--- obstacle2osm ---\n")
# Load county id's and names from Kartverket api
if len(sys.argv) > 1 and "-" not in sys.argv[1]:
gml2osm.load_municipalities(area_filter="county")
county = gml2osm.get_municipality(sys.argv[1])
if county is None:
sys.exit("*** County '%s' not found\n\n" % sys.argv[1])
else:
county_id, county_name = county
else:
county_id = "0000"
county_name = "Norge" # Default
message ("Area: %s\n" % county_name)
# Load obstacle gml from GeoNorge, process and output
county_name = gml2osm.clean_url(county_name)
url = "https://nedlasting.geonorge.no/geonorge/Samferdsel/Luftfartshindre/GML/Samferdsel_%s_%s_4258+3855_Luftfartshindre_GML.zip" % \
(county_id, county_name)
out_filename = gml2osm.clean_url("luftfartshindre_%s_%s.geojson" % (county_id[:2], county_name))
if "-line" in sys.argv or "-power" in sys.argv:
features = gml2osm.load_gml(url, object_filter=["NrlMast", "NrlLuftspenn"], elevations=True, verbose=True)
features = create_powerlines(features)
out_filename = out_filename.replace(".geojson", "") + "_powerlines.geojson"
else:
features = gml2osm.load_gml(url, elevations=True, verbose=True)
features = create_obstacles(features)
gml2osm.save_geojson(features, out_filename, verbose=True)
message ("\n")