def areas():
''' Retrieve geographic areas.
'''
is_census = is_census_datasource(environ)
lat = float(request.args['lat'])
lon = float(request.args['lon'])
include_geom = bool(request.args.get('include_geom', True))
json_callback = request.args.get('callback', None)
layer_names = is_census and request.args.get('layers', '')
layer_names = layer_names and set(layer_names.split(','))
# This. Is. Python.
ogr.UseExceptions()
point = ogr.Geometry(wkt='POINT(%f %f)' % (lon, lat))
if is_census:
features = census_features(point, include_geom, layer_names)
else:
datasource = get_datasource(environ)
features = get_intersecting_features(datasource, point, include_geom)
body, mime = features_geojson(features, json_callback)
return Response(body, headers={'Content-type': mime, cors: '*'})
def areas():
''' Retrieve geographic areas.
'''
is_census = is_census_datasource(environ)
lat = float(request.args['lat'])
lon = float(request.args['lon'])
include_geom = bool(request.args.get('include_geom', True))
json_callback = request.args.get('callback', None)
layer_names = is_census and request.args.get('layers', '')
layer_names = layer_names and set(layer_names.split(','))
# This. Is. Python.
ogr.UseExceptions()
point = ogr.Geometry(wkt='POINT(%f %f)' % (lon, lat))
if is_census:
features = census_features(point, include_geom, layer_names)
else:
datasource = get_datasource(environ)
features = get_intersecting_features(datasource, point, include_geom)
body, mime = features_geojson(features, json_callback)
return Response(body, headers={'Content-type': mime, cors: '*'})
except QueryError, e:
body, mime = json_encode({'error': str(e)}), 'application/json'
if json_callback:
body = '%s(%s);\n' % (json_callback, body)
mime = 'text/javascript'
return Response(body,
status=400,
headers={
'Content-type': mime,
cors: '*'
})
else:
body, mime = features_geojson(features, json_callback)
return Response(body, headers={'Content-type': mime, cors: '*'})
@app.errorhandler(404)
def error_404(error):
return render_template('error.html', error=str(error))
@app.route('/datasource.zip')
def download_zip():
if is_census_datasource(environ):
error = "Can't download all of " + census_url
return Response(render_template('error.html', error=error), status=404)
buffer = StringIO()
try:
datasource = get_datasource(environ)
features = get_matching_features(datasource, where_clause, page_number, include_geom)
except QueryError, e:
body, mime = json_encode({'error': str(e)}), 'application/json'
if json_callback:
body = '%s(%s);\n' % (json_callback, body)
mime = 'text/javascript'
return Response(body, status=400, headers={'Content-type': mime, cors: '*'})
else:
body, mime = features_geojson(features, json_callback)
return Response(body, headers={'Content-type': mime, cors: '*'})
@app.errorhandler(404)
def error_404(error):
return render_template('error.html', error=str(error))
@app.route('/datasource.zip')
def download_zip():
if is_census_datasource(environ):
error = "Can't download all of " + census_url
return Response(render_template('error.html', error=error), status=404)
buffer = StringIO()
archive = ZipFile(buffer, 'w', ZIP_DEFLATED)
archive.write('datasource.shp')