(mcc,),
)
data = list(lc.fetchall())
+ # lc.execute("drop table mem.seen")
+ lc.execute("""detach database mem""")
+ lc.close()
if not data:
- return 0.0, 0.0
+ raise ValueError("No location data found in opencellid")
sumsig = sum([1 / sig for _, _, sig in data])
nsigs = [1 / sig / sumsig for _, _, sig in data]
avlat = sum([lat * nsig for (lat, _, _), nsig in zip(data, nsigs)])
avlon = sum([lon * nsig for (_, lon, _), nsig in zip(data, nsigs)])
- # lc.execute("drop table mem.seen")
- lc.execute("""detach database mem""")
- lc.close()
return avlat, avlon
-
-
-if __name__.endswith("__main__"):
- from datetime import datetime, timezone
- import sys
- from .zx303proto import *
-
- db = connect(sys.argv[1])
- c = db.cursor()
- c.execute(
- """select tstamp, packet from events
- where proto in (?, ?)""",
- (proto_name(WIFI_POSITIONING), proto_name(WIFI_OFFLINE_POSITIONING)),
- )
- init({"opencellid": {"dbfn": sys.argv[2]}})
- for timestamp, packet in c:
- obj = parse_message(packet)
- avlat, avlon = lookup(obj.mcc, obj.mnc, obj.gsm_cells, obj.wifi_aps)
- print(
- "{} {:+#010.8g},{:+#010.8g}".format(
- datetime.fromtimestamp(timestamp), avlat, avlon
- )
- )