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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Sun May 31, 2015 2:00 pm    Post subject: Strange problem on Samsung Galaxy S4 Reply with quote

And another problem:
When track is not loaded when reaching the end of one map is loaded next of atlas. When track is loaded when reaching the end of the map program load wrong map of atlas?

On both phones ver. 1.30 with default settings.

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JNT



Joined: 10 Jan 2009
Posts: 409
Location: Sweden

PostPosted: Sun May 31, 2015 5:48 pm    Post subject: Re: Strange problem on Samsung Galaxy S4 Reply with quote

Peter Atanasov wrote:

What could be the problem?


In the past (if I remember correctly), when I tried to use Swedish maps (datum RT90) and had the datum set as wgs 84, I had similar issues.
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Ranger



Joined: 12 Dec 2006
Posts: 6027

PostPosted: Mon Jun 01, 2015 10:03 am    Post subject: Reply with quote

@Peter
Could you check how maps are recognized by app (in both phones check main menu, Info, Technical, Map section) ?
Do you have exactly the same datums.txt files in both phones, if any ?
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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Mon Jun 01, 2015 7:15 pm    Post subject: Reply with quote

Can't view Technical in Info section on SGS2 only on SGS4 but I think the problem is in some kind of incompatibility with hardware of SGS4, because as shown in Photo 2 Trekbuddy draws the wrong track but record correct. When you load the correct track, he also is not drawn correctly. I noticed that this is happening on the cards with smaller scale 1: 50k
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Ranger



Joined: 12 Dec 2006
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PostPosted: Mon Jun 01, 2015 8:04 pm    Post subject: Reply with quote

Yep, on more detailed maps (in scale) datum problems are better visible.
Looking on map types - probably they are not WGS84 maps, rather Pulkovo. Which one ?
So what you see in S4 Info, Technical, Map section ? Smile
Nothing special that good tracks are shown wrong on not recognized well maps Wink
And what about datums.txt in app resources folder ? Present or not ?
Are you sure that settings file wasn't copied from older phone to new one too ? Shouldn't.
To be sure about problem from start - first it is good to check what is in map calibration file, contains used datum and projection for map.
Can be easy attached on forum, it is simple small text file, just to check.
Second, checking what is visible in Info, Technical, Map section gives info how map datum is recognized by app (or not).
Technical Info is present in SGS 2 too, but depending on phone manufacturer Android versions, in Info phone Menu should be touched or Recents button hold for a while to see app menus Smile
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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Tue Jun 02, 2015 6:07 am    Post subject: Reply with quote

1. I can't find file datum.txt
2. Only MAPS folder I copied from the old to the new phone
3. Screenshot on MAP section in INFO panel from SGS4
4. .map file



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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Tue Jun 02, 2015 6:32 am    Post subject: Reply with quote

1. GPX track recordet yesterday on SGS4
2. When load in Trekbuddy on the same phone
3. Same track on another map on the same phone

SORRY for my bad english Embarassed



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Ranger



Joined: 12 Dec 2006
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PostPosted: Tue Jun 02, 2015 11:25 am    Post subject: Reply with quote

@Peter
Seems like problem can be specific just to phone model, used system version, app compatibility mode, etc.
Unfortunately I don't have exactly SGS4, but used model with the same HD screen resolution and high map scaling factor to check case.
Results and map used for test attached below, track looks well on map.
Can SGS4 (or other HD phone) users check problem with blank Pulkovo map & track attached in topic?



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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Tue Jun 02, 2015 12:01 pm    Post subject: Reply with quote

I will create map with another projection and try again. Maybe the problem is only with Pulkovo maps.
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Ranger



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PostPosted: Tue Jun 02, 2015 12:27 pm    Post subject: Reply with quote

@Peter
Problem rather isn't in map projection itself, cause it works well in another phone model.



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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Tue Jun 02, 2015 2:57 pm    Post subject: Reply with quote

I create the same map but in Mercator projection and everything works perfect. I have no explanation. All of my Atlases are in Pulkovo projection Sad is there any way to correct this strange problem?
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PostPosted: Tue Jun 02, 2015 3:36 pm    Post subject: Reply with quote

@Peter
This green line on picts comes from loaded track or is just current trail line drawn during navigation ?
When you see trackpoints in your gpx only first point have 3D fix, next all have 2D ... but there are a lot of sats, speed, course & altitude seems rather well.
Could you record raw nmea log ?
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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Tue Jun 02, 2015 6:18 pm    Post subject: Reply with quote

1. Every time i load a track it looks in a different way. Somtimes but wery seldom, it is ok, but when i change the scale ot switch map the track shifts.
2. During navigation trail is with big shifts "or jumps" left or right from the real path.
3. You are right about 3D fix in GPX, but in GPX file from my old SGS2 all points have 3D fix?!? Could this be a problem on the my new phone?
4. I recordet a track with OSMAND and load in Trekbudyy, the same situation-strange left/right "jumps" or strainght line, at every load is different.

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Ranger



Joined: 12 Dec 2006
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PostPosted: Tue Jun 02, 2015 7:09 pm    Post subject: Reply with quote

Recording nmea log, as asked, will show how good GPS/Glonass receiver in your phone indeed is ... Smile
It can be used in simulator mode in SGS2 too, ie to see possible differences in few devices and many times.
Unstability can be caused by some hardware/system failures of phone, so it is good idea to check it with few different apps to be sure.
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Peter Atanasov



Joined: 13 Sep 2007
Posts: 25
Location: Bulgaria

PostPosted: Wed Jun 03, 2015 6:39 pm    Post subject: Reply with quote

@Ranger
Short nmea log



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