Why the distance increase when I'm deleting trackpoints?

Hi everyone,
I don't know if I am doing something wrong, but there are some tracks whose final distance increases after deleting track points. Supposedly, when I delete points, the distance should decrease...Is there something wrong with my basecamp configuration or something like that?

0 SUSSAMB over 2 years ago

There is a bug in BaseCamp which incorrectly initially calculates the wrong distance. Deleting a track point forces a correct recalculation.

0 BTLAAKE over 2 years ago

When a track is saved on a device or download, it includes the track log and summary data. The summary data comes from the real-time tabulation of data like elapsed time, distance etc.

The real-time tabulation contains logic that will not update distance if the device decides you have not moved. That time interval will go into the tabulation of stopped time. (Even in at 1 sec intervals there will usually be a slight change in position).

When a track log is altered, summary data like distance will need to be recalculated and it will be done with the logged track data. Unless a device has been set up to log a 1 sec intervals, the track log will contain far fewer points than those used in real-time tablulation and recalculation of the summary data will usually result in a decrease in distance.

If you have a lot of stopped time or the device is setup to log at or near 1 sec itervals, it is possible that distance will increasse when you delete a point. One way to keep all of the logged data and recalculate the summary data is to divide and re-join the track. The new track will have one more point, but it is a dubplicate of a pont in the track log (same position/timestamp/elevation).