[Xastir-Dev] question regarding my track

[Chris Bell]

Hi,
	I was playing while mobile, and noticed some strange
behaviour.  Before I go whacking at things, I just wanted to check if
the current behaviour was intentional.  

The fundamental issue seems to be that track points generated by
moving my station (by whatever means, in the usual case GPS, either
local/tnc/gpsd) are treated differently than the a point received from
an echo (digipeat).  Should they?  

Operational example:   I have a GPS on the radio port of my kpc-3+.
Fire up xastir, drive down the road.  My icon (which track-me turned
on, but does not seem to make a difference) hops along down the road
with each GPS poll.  I have no colored track though.  Once I finally
get an echo back from a digi, I suddenly start drawing a trail,
following the gps updates.  

Things get even stranger with DR turned on.  My icon gets
dead-reconned, but the DR ghost is drawn with the current speed and
heading, starting from the current icon position (which are all tracking
the GPS).  Only after a successful digi echo does the DR track get
reset to 0.  [so even though the ghost position has no meaning at all
in a DR context, it did show me how long "ago" I had a good echo.  

I first noticed this testing some gpsd related issues, if I was not
connected to the TNC (or net) I never drew a track.  I could fix it by
connecting to something and getting a digipeat.  Another way to fix it
was to load a log, either from disk or findu that had my station
moving around.  Then the gps track would follow me around.  

Chris.
KD6ZWR
cbell at junknet.com