Feature Request: Add odometer correction/multiplication factor about traccar

[tananaev]

You can already do it with computed attributes.

[roylee01]

It would ruin the clean interface a little bit, but I guess that a lot of people need the distance factor function as gps always differs from odometers. So a graphical input field would be very handy/usefull.

Nevertheless, I hate to beg for direct solutions because I always try to find it out myself. But I didn't succeed in finding out what I need to do exactly. Do you have a sample code of manipulating the incoming odometer values by a factor that can be changed?

[tananaev]

I think something like this should work:

totalDistance + distance * 0.007

[roylee01]

Thank you! I've been trying to add the above expression with no success yet.

I added below just to be sure:
(don't know if this is neccessary, but the computed attribute didn't work while testing with a "totalDistance + distance * 6" wtihout the below lines in traccar.xml, didn't drove the car since adding the below lines)

And added the computed attribute like below, can you confirm this is correct?:

Thanks in advance!🙏🏼

Edit:
It's working now using:

Followed by connecting it to the device that needs the computed attribute.

Again, thank you very much! :)