magnetic compass "heading"

what's the best way to read the magnetic compass heading?

through position.info.heading or through sensor.info.heading? Or some other way?

I need to poll the magnetic compass reading, for watches that have it. Does it require that I enable the "sensor" permission?

thanks in advance for all feedback!

Top Replies

Shent-Aurkhan (SHN) over 5 years ago in reply to Shent-Aurkhan (SHN) +1

As far as I know, the good thing with Position.getInfo().Heading is if gps off, compass is used
jim_m_58 over 5 years ago in reply to Shent-Aurkhan (SHN) +1

I think it's not only if GPS is off, but also if you are under a certain speed. So if you're running, it uses GPS, but standing still, the compass.
SteveRodkey over 5 years ago +1

Based on some testing I did months ago, activity.info.heading comes from the compass if the device has one. activity.info.track comes from GPS. If the device does not have a compass, then info.heading…

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Shent-Aurkhan (SHN) over 5 years ago

Hi mate,

Is it for an app or à widget ?

Postion.xxx is according the GPS

Sensor.xxx is according... The sensor

So yes you have to get the permission. (sensor and or position)

Shent-Aurkhan (SHN) over 5 years ago in reply to Shent-Aurkhan (SHN)

developer.garmin.com/.../Info.html

Shent-Aurkhan (SHN) over 5 years ago in reply to Shent-Aurkhan (SHN)

developer.garmin.com/.../Info.html

Shent-Aurkhan (SHN) over 5 years ago in reply to Shent-Aurkhan (SHN)

As far as I know, the good thing with Position.getInfo().Heading is if gps off, compass is used

mqbfxw over 5 years ago in reply to Shent-Aurkhan (SHN)

for an app, thanks! And thanks for making such cool apps!

Shent-Aurkhan (SHN) over 5 years ago in reply to mqbfxw

thanks mate ;)

jim_m_58 over 5 years ago in reply to Shent-Aurkhan (SHN)

I think it's not only if GPS is off, but also if you are under a certain speed. So if you're running, it uses GPS, but standing still, the compass.

Shent-Aurkhan (SHN) over 5 years ago in reply to jim_m_58

oh yes, I remember you've already told it in other thread, that is very useful!

SteveRodkey over 5 years ago

Based on some testing I did months ago, activity.info.heading comes from the compass if the device has one. activity.info.track comes from GPS. If the device does not have a compass, then info.heading and info.track are identical. The displays that Garmin provides, seem to use speed to decide which to use, but the IQ data available does not change with speed. While moving (or perhaps bouncing) the compass data is too noisy to be useful. This testing was done with a datafield.