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[closed] Wrong angles reading

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ds47uk
Posts: 91
Joined: Sat May 04, 2013 8:40 am
Location: Durham, UK

Re: [done] Wrong angles reading

Post by ds47uk »

[quote]Surely the military (of whichever state) should be providing additional funding for such bespoke development?[/quote]

You can imagine it can't you! Mr.Trump saying to Mrs.May "Sorry about Birmingham. We were trying to nuke Moscow, but we were a bit out. We use AlpineQuest and they use different angles to us!" :o

Edit:
Why didn't that quote work??
Yemble
Posts: 333
Joined: Sun Apr 28, 2013 5:02 pm

Re: [closed] Wrong angles reading

Post by Yemble »

Indeed, why do we need multiple versions of the truth?
Psyberia-Support
Site Admin
Posts: 6408
Joined: Wed Apr 14, 2010 9:41 pm

Re: [closed] Wrong angles reading

Post by Psyberia-Support »

It's not new to have different truths between different cultures... It just depends on the way you look...
Here is a good article from the OS explaining the different "norths" we can find: https://www.ordnancesurvey.co.uk/resour ... north.html.
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1echeck
Posts: 11
Joined: Thu Jan 26, 2017 6:05 pm

Re: [closed] Wrong angles reading

Post by 1echeck »

Thanks a lot Sir! You finally fixed that, with the new update it is possible to head to grid north! Great Christmas gift. Sending some money though 😉
Psyberia-Support
Site Admin
Posts: 6408
Joined: Wed Apr 14, 2010 9:41 pm

Re: [closed] Wrong angles reading

Post by Psyberia-Support »

Hi and thanks for the feedback.
Yes bearing relative to grid north is now available since AlpineQuest 2.0.7c and OfflineMaps 2.9.
Just be sure to select grid north from he application settings.
Best regards
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1echeck
Posts: 11
Joined: Thu Jan 26, 2017 6:05 pm

Re: [closed] Wrong angles reading

Post by 1echeck »

Bearing works great but now it shows 997 m distance between two points instead of 1000 m? As shown on picture?
What could be the problem? I am presenting this application to other colleagues and this is an annoying bug
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Psyberia-Support
Site Admin
Posts: 6408
Joined: Wed Apr 14, 2010 9:41 pm

Re: [closed] Wrong angles reading

Post by Psyberia-Support »

Hi again,

This inaccuracy is due to the "great circle" formula used to compute distance between points. It's very fast (time and battery efficient) but only accurate up to 0.5% (so +/-5m over 1000m).

Now that the application is used in more more fields than I initially thought, I understand it's no more sufficient.

Within few days a new version will be released, I'll make sure it uses a more precise formula ("Vincenty" which is already implemented but not currently used).
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1echeck
Posts: 11
Joined: Thu Jan 26, 2017 6:05 pm

Re: [closed] Wrong angles reading

Post by 1echeck »

Can't wait! Thank you 🙏😊
Psyberia-Support
Site Admin
Posts: 6408
Joined: Wed Apr 14, 2010 9:41 pm

Re: [closed] Wrong angles reading

Post by Psyberia-Support »

I've released the new version as a beta (you can request beta versions from the Play Store).
Official release will follow soon if everything is alright.
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1echeck
Posts: 11
Joined: Thu Jan 26, 2017 6:05 pm

Re: [closed] Wrong angles reading

Post by 1echeck »

Perfect work 👌
Thanks 🙏
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