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Code Issues 14 Releases Wiki Activity

Geolocations using city size

merge-requests/30/head
Bob Mottram 2021-05-18 17:58:44 +01:00
parent 9227b49eb7
commit 9b71708649
3 changed files with 376 additions and 482 deletions
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18
city.py
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@ -138,7 +138,7 @@ def spoofGeolocation(baseDir: str,
locationsFilename = baseDir + '/custom_locations.txt'
if not os.path.isfile(locationsFilename):
locationsFilename = baseDir + '/locations.txt'
cityRadius = 0.1
manCityRadius = 0.1
varianceAtLocation = 0.0004
default_latitude = 51.8744
default_longitude = 0.368333
@ -159,8 +159,12 @@ def spoofGeolocation(baseDir: str,
city = city.lower()
for cityName in cities:
if city in cityName.lower():
latitude = cityName.split(':')[1]
longitude = cityName.split(':')[2]
cityFields = cityName.split(':')
latitude = cityFields[1]
longitude = cityFields[2]
areaKm2 = 0
if len(cityFields) > 3:
areaKm2 = int(cityFields[3])
latdirection = 'N'
longdirection = 'E'
if 'S' in latitude:
@ -182,6 +186,14 @@ def spoofGeolocation(baseDir: str,
# patterns of activity change in the city over time
(distanceFromCityCenter, angleRadians) = \
_getCityPulse(currTimeAdjusted, decoySeed)
# The city radius value is in longitude and the reference
# is Manchester. Adjust for the radius of the chosen city.
if areaKm2 > 1:
manRadius = math.sqrt(630 / math.pi)
radius = math.sqrt(areaKm2 / math.pi)
cityRadius = manCityRadius * manRadius / radius
else:
cityRadius = manCityRadius
# Get the position within the city, with some randomness added
latitude += \
distanceFromCityCenter * cityRadius * math.cos(angleRadians)

814
locations.txt
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File diff suppressed because it is too large Load Diff

26
tests.py
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@ -3600,20 +3600,21 @@ def testRemovePostInteractions() -> None:
def testSpoofGeolocation() -> None:
print('testSpoofGeolocation')
citiesList = [
'NEW YORK, USA:40.6397:W73.7789',
'LOS ANGELES, USA:33.9425:W118.408',
'HOUSTON, USA:29.9803:W95.3397',
'MANCHESTER, ENGLAND:53.4794892:W2.2451148'
'NEW YORK, USA:40.7127281:W74.0060152:784',
'LOS ANGELES, USA:34.0536909:W118.242766:1214',
'HOUSTON, USA:29.6072:W95.1586:1553',
'MANCHESTER, ENGLAND:53.4794892:W2.2451148:630',
'BERLIN, GERMANY:52.5170365:13.3888599:891'
]
currTime = datetime.datetime.utcnow()
decoySeed = 7634681
cityRadius = 0.1
coords = spoofGeolocation('', 'los angeles', currTime,
decoySeed, citiesList)
assert coords[0] >= 33.9425 - cityRadius
assert coords[0] <= 33.9425 + cityRadius
assert coords[1] >= 118.408 - cityRadius
assert coords[1] <= 118.408 + cityRadius
assert coords[0] >= 34.0536909 - cityRadius
assert coords[0] <= 34.0536909 + cityRadius
assert coords[1] >= 118.242766 - cityRadius
assert coords[1] <= 118.242766 + cityRadius
assert coords[2] == 'N'
assert coords[3] == 'W'
assert len(coords[4]) > 4
@ -3642,12 +3643,17 @@ def testSpoofGeolocation() -> None:
currTime = datetime.datetime.strptime("2021-05-" + str(dayNumber) +
" " + hourStr + ":14",
"%Y-%m-%d %H:%M")
coords = spoofGeolocation('', 'manchester, england', currTime,
coords = spoofGeolocation('', 'new york, usa', currTime,
decoySeed, citiesList)
#coords = spoofGeolocation('', 'berlin, germany', currTime,
# decoySeed, citiesList)
longitude = coords[1]
if coords[3] == 'W':
longitude = -coords[1]
kmlStr += '<Placemark id="' + str(i) + '">\n'
kmlStr += ' <name>' + str(i) + '</name>\n'
kmlStr += ' <Point>\n'
kmlStr += ' <coordinates>' + str(-coords[1]) + ',' + \
kmlStr += ' <coordinates>' + str(longitude) + ',' + \
str(coords[0]) + ',0</coordinates>\n'
kmlStr += ' </Point>\n'
kmlStr += '</Placemark>\n'