how to make delta plot between two laps accurately?

[avinjoon]

I'm still using https://docs.fastf1.dev/utils.html and seems it's not accurate. because i compared my output with gp-tempo and there is some differences. how to make this data accurate?

this my output 🔝🔝🔝🔝🔝🔝

and this is gp-tempo output 🔝🔝🔝🔝🔝🔝

[theOehrly]

As the documentation states, I am very aware that this function is not very accurate. If I knew how to make it accurate, I'd have implemented this already. Therefore, I can't answer your question since I don't know.

Also, note that the gp-tempo output isn't perfect either, but it might be more accurate.