I see wrong distance in some devices.
You need to find the root cause for it.
could you assist me to find out the root cause please. I see some wrong coordinates when I check replay history.
found following details under more info. I guess it gets 0.0 coordinates.
deviceId 597
protocol Protocol h02
serverTime Server Time 2023-09-15 22:21:46
deviceTime Device Time 2023-09-15 22:21:44
fixTime Fix Time 2023-09-15 22:21:44
outdated No
valid Valid No
latitude Latitude 0.000000°
longitude Longitude 0.000000°
altitude Altitude 0.00 m
speed Speed 0.00 km/h
Zero coordinates would explain the wrong distance, of course.
Have you tried to ignore zero coordinates through traccar config and then restart the server.
<entry key='filter.zero'>true</entry>
I added filter zero and also enabled coordinates filter. It won't fixed the history? isn't it fix the history?
It won't fix history.
I used
DELETE from tc_positions WHERE latitude=0 and longitude=0;
to delete wrong positions. how to recalculate distance based on new data? is there any way to fix?
Traccar won't recalculate historical data for you.
is there any way to do it manually? if you can let me know the formula, I will be able to recalculate it and update using sql queries.
It should be trivial to find the distance formula. As for query, that's something you would have to figure out yourself.
I have lot of devices in my system and I see unusual distance calculations. how to fix this? please help me