Extraneous GPS fixes

[markb1]

I used LapTimer at an autocross yesterday, and I found that on my first lap, there were a bunch of extra GPS fixes, which were near my home, miles from the autocross site. I exported the CSV and found these fixes were dated from the last autocross I went to, which was two weeks earlier. Interestingly, between the last autocross and this one, I bought an XPS160. I'm using v17.4.3 Grand Prix on an iPhone 5S.

How did this happen? And how do I fix it, so I can produce a video overlayed with the correct route map?

Thanks.

[Harry]

I assume this additional fixes are "widow recordings" that were not removed correctly. This phenomena is most probably not related to the XGPS. To clean the recording, export the lap to .hlptrl, remove the fixes not belonging to the lap (keep in mind: the fix time stamps are UTC time), and import that lap again. To do the later, please send the .hlptrl file to any email account you can read on your iPhone and select LapTimer to open the attachment when touched.

LapTimer will export the .hlptrl in its compressed version .hlptrz. To get the plain text file, un-zip the file by renaming it to .hlptrl.gz and opening it using e.g. 7zip (on Windows).

- Harry

[markb1]

Ok, great, that worked! So what would have caused the "widow recordings"?

Thanks.

[Harry]

A crash in the middle if the recording?