I have a question regarding the data files which are created after the flight.

I use an iPad mini 5 with an external GPS receiver from DUAL. It is set to a refresh rate of 1 Hz. 

After a flight with a logging time of about 1h09m the created gpx file does not contain about 4100 entries but only about 1300.

The distance between the entries is between 0 and 6 seconds,

Last flight as an example:

     124x 0sec (meaning the same time from one entry to the next one)

     212x 1sec

     198x 2sec

     108x 3sec

     99x 4sec

     554x 5sec

     6x 6sec

     1x >6sec

Why I do not have an entry for every second?

Please respond.

Happy flights 

Mark

At present (this could change) we log a position every 5 seconds, unless there is a significant change in your track or speed or altitude, at which point we log extra snapshots.

thank you for your quick answer.

I just thought if I use this data for overlays for a video it is maybe better to have data points every second - at least it looks better when I compare videos made with the SkyDemon data with videos made with data from my garmin fenix watch (which is set to a frequency of 1 Hz to collect data points) - especially the heading turns smoother. For all other data one position every 5 seconds seems to be good enough.

Unfortunately the height information is worse with the fenix data - when landing at the same airport where I took off I am often about 10-15 m higher :-(. With the DUAL GPS receiver it is more accurate.

But your answer makes reason - for at least 99.9% of the users and applications this is good enough.

Thank you again for your answer and for the well-made software with all its great improvements over time - I enjoy every second with your software including planning and flying :-)! I appreciate all of your work and effort.

Best regards

Mark

P.S. Maybe I will be at the aero Friedrichshafen this year - then I could come by to see you personally.