Suunto 9 Baro football run distance in km

Dimitrios Kanellopoulos

@Alexbg hi this is not correct approach to debug an issue. Gpx data are extrapolated / interpolated and are from another service.

Also your watch uses fused distance and speed it doesn’t obey only to GPS. GPS is there to help only.

Here is an activity with the latest fw showing back and forth 10m increments.

https://app.suunto.com/move/dimitrioskanellopoulos/5da20b6b58e211b29b61bc01

And another one.

https://app.suunto.com/move/dimitrioskanellopoulos/5da1da0da6957b4b299b914a

What I suspecting is that you use a sport mode without fused distance and that might be a bug if you used football.

I agree with the 10 meter assessment. That is the same that I observed when looking at FIT files from my Suunto 9 (from running and trail running activities). It appears distance and coordinate updates usually come with at least 10 meter intervals, sometimes greater than that, but rarely less than 10 meters.

Alexbg

@silentvoyager Thanks for sharing your experience on the topic. Only this way Suunto may take steps to fix the bug.

@Dimitrios-Kanellopoulos I greatly appreciate your feedback.
On fused distance - do you mean Fused Track? If not please can you share with me how can I activate fused distance on my Suunto 9 Baro.
If you refer to Fused Track as far as I read it is activated automatically when you switch to Ultra or Endurance battery mode. As I mentioned above I always use Performance mode, because I want best tracking data.

On using GPX file to analyze the problem I go even further. I want to analyze every single distance between two GPS refresh points for a particular exercise. I download FIT file from Suunto App and use https://www.gpsvisualizer.com/ to convert it to plain TXT file. Open the file in Excel. It has the following structure:

I calculate the distance in meters between two GPS points using the following formula:
=ACOS(COS(RADIANS(90-C2)) *COS(RADIANS(90-C3)) +SIN(RADIANS(90-C2)) *SIN(RADIANS(90-C3)) *COS(RADIANS(D2-D3))) *6371000
Everyone who is interested can find more info on the formula on the internet.

And finally I run a histogram statistics on the data.

So it appears that in this particular run 55% of the GPS refresh points are more than 8m away one from the next.
I run the same analysis on several other tracks (walking, cycling and football) showing the same statistics.
So if most of the GPS point coordinates are refreshed when distance is larger than 8-10 meters, that will make the watch unusable for large part of the 80 sports activities pre-set on it.

Please check your own tracks and share your experience.

Performance has a difference meanings. For one person it means more than 100 hours battery endurance, BUT for others it means precision/perfection in tracking. Suunto should give all customers setting on the watch to choose what they want based on their needs.

freeheeler

@Alexbg
performance to me is accuracy, endurance is +100h battery…
but Dimitrios was asking if you used the correct sportmode… did you?

Dimitrios Kanellopoulos

@Alexbg let me help you. Try a fit file converter . The GPX file you have is not a supported one by our service.

https://fit2tcx.runalyze.com/temp/

Download the fit file via SA and upload it there to get better undersrtanding or correct data.

Alternatively you can give me the FIT file and I can do analysis.

The calculation of the GPS points are doing it via the Vincenty algo or the usual inaccurate one just plain Geodesy ?

Also I am interested on the sport mode you used.

Alexbg

@Dimitrios-Kanellopoulos Thanks for the support.
Please find enclosed the FIT file downloaded directly from Suunto App:
Soccer_2019-11-21T17_52_32.fit
On this run I was using Soccer/Football (basic) sport mode with Battery mode on Performance setting for max quality of logs.

Dimitrios Kanellopoulos

I can see what you mean. The coords are not recorded very often nor the distance increases.

could you record another time with a sport mode of running just for the sake of it ?

Alexbg

@Dimitrios-Kanellopoulos Please find enclosed my latest FIT file:
Running_2019-11-28T17_51_15.fit
Watch: Suunto 9 Baro
Firmware: 2.9.42
Battery mode: Performance Max quality logs
Sport mode: Running
GPS System: GPS + Galileo
AGPS: Watch synchronized with Suunto App before start. Latest AGPS updated on watch
Before start: I wait for GPS signal to turn green and wait 1 additional minute before start

What I see from analyzing the FIT in excel is better coordination update, but still not good enough. Please see the stats below:

More coordination update points than previous time, but still 40% of updated coordinates are above 8 meters between previous and next GPS point.

Do you think this can be fixed?
Thanks for your support.

Dimitrios Kanellopoulos

@Alexbg It can be fixed and you could even try with the prev GPS firmware. I need to report this.

Alexbg

@Dimitrios-Kanellopoulos Thanks a lot for the support.

I don’t want to go to previous GPS firmware as I will lose the VO2Max, Sleep quality assessment, Stress level and body resources graph. I rather wait till the next firmware update. I saw on the forum that other customers are unhappy with the GPS coordinates frequency update rate. I hope Suunto will solve it soon.

Thanks.