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Course bearing line Course track line.

balloni55 shared this question 10 years ago
Answered

Hi menion,


here and in german forum were messages that german translation is reversed.


During the discussion for right german translation we also considered your english description and the depending function.


http://commons.wikimedia.org/wiki/Fil...


Two things need to be clarified:


1. “Course bearing line” the function of this line show the current moving direction and so it is a “Course/track line”. Bearingline we see while “guide on” the line to the selected target.


2. “Heading line” heading shows the orientation of the device display (aircraft / ship`s longitudinal axis) and must be controlled always by the magnetic compass, the direction of movement and display orientation "map rotate" is calculated while moving by satinfo. And that does not seem to be so in locus.


My small screencast should make this clear:


https://www.dropbox.com/s/rtxuxxlt23a...


I go to the west, the orange (heading) line and the blue (course/track) line pointing in the same direction. This I alright.


Now I`m moving sideways to the north, my device point still in the same direction as at the beginning (pointing to the west). After a short time, when the map aligns, depending on the direction of motion an satinfo, rotate, the yellow line follows the blue and that is wrong!


Proper way in this case while sideway movement the orange line continues pointing vertically upwards to the west and the blue line pointing 90° right, to the north. Then the map orientation is no longer in the direction of movement. From second 10 up to second 16 in screencast, while slow moving, the displayed lines are pointing to the correct direction.


Menion, I know you don ́t like long posts, sorry for that, but I am not able to discribe it shorter

Replies (10)

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Hello balloni,


I`ve no problem with long posts, really ;)


So, I`ll try to shortly describe how I understand it etc ...


---


Course line - current moving direction (agree)


Heading line - I though about it as about "bearing line", so direction where you`re pointing (with your device)


--


video


at second 12:


- orange line (heading) points up (to the west) - your device points to west - OK


- blue line (course) points right (to the north) - you`re moving to the north - OK


so I think it`s OK, isn`t it? Correct me please if I`m wrong

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Hello menion,


Course line - current moving direction (agree)


perfect


direction where you`re pointing (with your device)



yes, and always depending to the intern magnetic compass


at second 12:


- orange line (heading) points up (to the west) - your device points to west - OK


- blue line (course) points right (to the north) - you`re moving to the north - OK



at this time it is OK.


In my understanding at second 17 locus switch the used info for headingline from intern magnetic compass to calculatet satinfo.


greetings Wolfgang

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so problem is heading right? But source for heading is set in Locus settings. Check menu > settings > sensors > Use hardware compass. If locus change it during walk, check if you have disabled "Auto change" below

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Should we make some differences between foot, bike, car


and


plane and ship?


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No, I don`t think it is a good idea to do that. We should keep _one_ Locus usable by everyone.

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We should keep _one_ Locus usable by everyone


it ́s also my opinion


and if "heading" is available in Locus, the displayed line must point in the right direction.

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That ́s clear, if autochange is disabeled the displayed headingline points to the right direction.


I ́m not a developer, but is it not possible to fix permanent magnetic compass to the headingline and all other applications can use autochange?

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ore another soution, headingline is only displayed when "Auto change" disabled.

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hmm I wrote long description why this isn`t possible and in the end I realized - why not :)


I`m just worried, this will lead to similar situation as with "Move map center". This feature works only if you have enabled map rotation, but it`s not clear!! So I`m sure, most users enable "move map center" and because it do on first sight nothing, they disable it.

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Or always use the compass for the heading line. You cannot know the course (direction of travel) until you get that info as a velocity vector of nonzero length from the GPS. So the course line does not display until you have a usable velocity vector. The heading line always displays the heading. Maybe I haven't thought this through...

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