def test_check_bounds(self):
self.assertIsNone(check_bounds('100', '100', '100', ''))
self.assertIsNone(check_bounds('-100', '100', '200', 'asdf'))
expected_bounds = (float('10.0'), float('40.1234'), float('20.20'),
float('-10.123456'))
actual_bounds = check_bounds('10.0', '-10.123456', '20.20', '40.1234')
self.assertEqual(expected_bounds, actual_bounds)
def get_censustract_geos(request):
northEastLat = request.GET.get('neLat')
northEastLon = request.GET.get('neLon')
southWestLat = request.GET.get('swLat')
southWestLon = request.GET.get('swLon')
metro = request.GET.get('metro')
geo_type = request.GET.get('geoType')
geos = []
if northEastLat or northEastLon or southWestLat or southWestLon:
bounds = check_bounds(northEastLat, northEastLon, southWestLat,
southWestLon)
if bounds:
if geo_type == "msa":
#*bounds expands the set from check_bounds
msas = get_geos_by_bounds_and_type(*bounds, metro=True)
geos = Geo.objects.filter(geo_type=Geo.TRACT_TYPE,
cbsa__in=msas.values_list('geoid',
flat=True))
else:
geos = get_geos_by_bounds_and_type(*bounds)
else:
raise Http404("Invalid bounds")
elif metro:
msa = get_object_or_404(Geo, geo_type=Geo.METRO_TYPE, geoid=metro)
geos = msa.get_censustract_geos_by_msa()
return geos
def get_censustract_geos(request):
northEastLat = request.GET.get('neLat')
northEastLon = request.GET.get('neLon')
southWestLat = request.GET.get('swLat')
southWestLon = request.GET.get('swLon')
year = request.GET.get('year')
metro = request.GET.get('metro')
geo_type = request.GET.get('geoType')
geos = []
if northEastLat or northEastLon or southWestLat or southWestLon:
bounds = check_bounds(northEastLat, northEastLon, southWestLat, southWestLon)
if bounds:
maxlat, minlon, minlat, maxlon = bounds
if geo_type == "msa":
#*bounds expands the set from check_bounds
msas = get_geos_by_bounds_and_type(maxlat, minlon, minlat, maxlon, year, metro=True)
geos = Geo.objects.filter(geo_type=Geo.TRACT_TYPE, cbsa__in=msas.values_list('cbsa', flat=True))
else:
geos = get_geos_by_bounds_and_type(maxlat, minlon, minlat, maxlon, year)
else:
raise Http404("Invalid bounds")
elif metro:
msa = get_object_or_404(Geo, geo_type=Geo.METRO_TYPE, geoid=metro) # metro includes year
geos = msa.get_censustract_geos_by_msa()
return geos
def msas(request):
"""return a list of MSA ids visible by bounding coordinates"""
try:
northEastLat = request.GET.get('neLat')
northEastLon = request.GET.get('neLon')
southWestLat = request.GET.get('swLat')
southWestLon = request.GET.get('swLon')
year = request.GET.get('year')
maxlat, minlon, minlat, maxlon = check_bounds(northEastLat, northEastLon, southWestLat, southWestLon)
msas = get_geos_by_bounds_and_type(maxlat, minlon, minlat, maxlon, year, metro=True)
msa_list = [metro.geoid for metro in msas]
return HttpResponse(json.dumps(msa_list), content_type='application/json')
except:
return HttpResponseNotFound("Invalid lat/lon bounding coordinates")
def test_check_bounds(self):
self.assertIsNone(check_bounds('100', '100', '100', ''))
self.assertIsNone(check_bounds('-100', '100', '200', 'asdf'))
expected_bounds = (float('10.0'), float('40.1234'), float('20.20'), float('-10.123456'))
actual_bounds = check_bounds('10.0', '-10.123456', '20.20', '40.1234')
self.assertEqual(expected_bounds, actual_bounds)