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kml to geojson
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from xml.etree import ElementTree | |
from shapely.geometry import Polygon, Point | |
import json | |
poly_table = [] | |
data = open('/tmp/chicago.kml') | |
tree = ElementTree.parse(data) | |
namespace = tree.getroot().tag[1:].split("}")[0] | |
placemarks = tree.findall(".//{%s}Placemark" % namespace) | |
for p in placemarks: | |
for d in p.findall(".//{%s}Data" % namespace): | |
if d.attrib.get('name') == 'OBJECTID': | |
name = d.find('.//{%s}value' % namespace).text | |
coord_text = p.find('.//{%s}coordinates' % namespace).text | |
coord_pairs = coord_text.split(' ') | |
coords = [z.split(',')[0:2] for z in coord_pairs] | |
polygon = [(float(x[0]),float(x[1])) for x in coords] | |
poly_table.append((polygon,name)) | |
features = [] | |
for polygon,name in poly_table: | |
new_feature = { | |
'type':'Feature', | |
'geometry': { | |
'type':'Polygon', | |
'coordinates': [polygon] | |
}, | |
'properties': { | |
'neighborhood': name, | |
}, | |
} | |
features.append(new_feature) | |
out = { | |
'type':'FeatureCollection', | |
'features': features, | |
} | |
print json.dumps(out) |
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