[Marble-devel] Position Tracking

[Bryan Greenway]

Agreed.  But the Arrow PositionMarker should never disappear completely,
should it?

Also, If I can provide direction information, how do I do that?  My GPS is
also equipped with a compass that gives me a heading.  I'd love to be able
to use that.

Bryan 

-----Original Message-----
From: Anders Lund [mailto:anders at alweb.dk] 
Sent: Friday, September 24, 2010 1:50 PM
To: marble-devel at kde.org
Subject: Re: [Marble-devel] Position Tracking

On Fredag den 24. september 2010, Bryan Greenway wrote:
> Hello,
> 
> 
> 
> I developed a custom PositionProviderPlugin that accepts data in realtime
> from a connected GPS (via TCP or UDP).  It works great, but I've notice a
> behavior that I don't believe is quite right.  If the vehicle comes to a
> stop, during which time the MarbleWidget receives several GPS updates, the
> Position Marker Arrow seems to dance around a bit and disappear
altogether.
> 
> 
> 
> 
> Has anyone else noticed this behavior?

This is common for GSP devices, they can not know the direction precisely
when 
not moving, unless paired with a compass. Some software ignore the direction

indication if the speed is below some treshold, i think i recently saw 0.2
m/s 
used in a plasmoid.

> 
> 
> 
> Thanks,
> 
> 
> 
> Bryan
> 
> 
> 
> _bryang on IRC
> 
> 
> 
> rbgreenway at gmail.com


-- 
Venlig hilsen,
Anders
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