'Initialize the sensor.'

def __init__(self, hass, name, latitude, longitude, radius, include, exclude):

    import crimereports
    self._hass = hass
    self._name = name
    self._include = include
    self._exclude = exclude
    radius_kilometers = convert(radius, LENGTH_METERS, LENGTH_KILOMETERS)
    self._crimereports = crimereports.CrimeReports((latitude, longitude), radius_kilometers)
    self._attributes = None
    self._state = None
    self._previous_incidents = set()
