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27-03-2022, 08:11
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#1
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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5.6 ais target heading issue
Running openplotter on rpi4… just upgraded from open on 5.2.4 to 5.6..
In doing so, any ais target icon with a null heading is defaulting to 000, instead of COG…thus targets moving EAST with no heading are pointing NORTH…under 5.2 they were pointing to the COG…
How do I get these to default to 5.2 approach?
An issue with 5.6? Some setting?? Something else?
Thanks in advance
John
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27-03-2022, 10:55
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#2
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,139
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Re: 5.6 ais target heading issue
John
Neither on Win nor RPi I don't see that. See my shot from a RPi4. No heading but the ship symbol is pointing to COG.
I the case no speed of the ship the symbol would though point north since no speed also implies no COG.
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27-03-2022, 12:10
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#3
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Hakan
Thx for feedback
Are you using openplotter with opencpn5.6?? Was not an issue with 5.2….
See my pix
Boat is going west, icon pointed north….
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27-03-2022, 12:26
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#4
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Registered User
Join Date: Oct 2021
Posts: 589
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Re: 5.6 ais target heading issue
Not on the boat to test myself today, but I see the OP doesn't have the leading line feature turned on for AIS targets and Hakan does. Any chance that makes a difference in how the icon is processed?
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27-03-2022, 12:37
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#5
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,139
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Re: 5.6 ais target heading issue
The course predictor would have no impact on this.
John..
Looks really strange. What is the difference to the class B target south for the actual target where the ship icon seems to point to COG?
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27-03-2022, 12:42
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#6
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Any target pointing the right direction has a non-null heading… anything with a null heading (and a non null cog) defaults the icon heading to 000
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27-03-2022, 12:45
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#7
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,139
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Re: 5.6 ais target heading issue
But the class B target southwards couldn't have a heading. It's not included in the class B messages.
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27-03-2022, 12:47
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#8
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Furthermore…
Class does not seem to matter, nor boat speed. Btw my course predictor is checked but rarely works…also the only way I can get target tracks is by clicking the record option within the target query box… the show target track does nothing…
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27-03-2022, 12:49
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#9
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Some class B boats do have a heading…maybe 20-25%.
This all changed going from 5.2 to 5.6…was fine on openplotter using cpn5.2….
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27-03-2022, 12:53
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#11
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,139
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Re: 5.6 ais target heading issue
John..
Sorry, I've never seen what you describe so not much of a help.
Anyone else...?
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27-03-2022, 12:53
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#12
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Could this be an openplotter issue?? A Linux issue??
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27-03-2022, 13:07
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#13
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
Hakan
Many thanks…
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28-03-2022, 12:54
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#14
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Registered User
Join Date: May 2012
Boat: Lagoon 470, ex corsair f31
Posts: 195
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Re: 5.6 ais target heading issue
After three reinstalls, and several hours of playing with the options/ships/ais switches the target icons corrected themselves...there is a gremlin in there, but i can no longer replicate it...
Possibly there were too many anchored boats, at least for the initial boot up. Cuz its fine now....
Thanks to all for a great nav system .
Cheers
John
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28-03-2022, 13:26
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#15
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Registered User
Join Date: Nov 2012
Location: Orust Sweden
Boat: Najad 34
Posts: 4,139
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Re: 5.6 ais target heading issue
Gremlins are there to strengthen our character. If it happens again please come back. Possible with a VDR recording?.
Thanks for the report.
Håkan
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