[Marble-devel] Position Tracking

[Anders Lund]

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