[Xastir] Replaying logs made with trackme

Curt, WE7U archer at eskimo.com
Mon Apr 12 12:35:50 EDT 2004


On Fri, 9 Apr 2004, Jack Twilley wrote:

> I logged part of my roadtrip last week with xastir, but the position
> bug made the display useless.  I still have the log, which contains
> entries like this:
>
> KC2ELS-9>APX131,WIDE2-2:@030615/3348.49N/10657.53Wx038/064/A=000000/XASTIR-FreeBSD
>
> When I replayed the log, my pointer didn't zip around the screen.  Is
> there any particular reason why not?  What's the best way to replay,
> at normal speed, a TNC log such that I will see what I would have seen
> had the position bug not been there?

Are you referring to the position bug that I introduced, which was
fixed the following day?  If so, I apologize for that.  Sorry that
you hit that exact CVS version right when you were traveling and
logging...

As far as watching the travel via log files, we don't use the
timestamps at all when reading logs back in, and in fact we only
have a timestamp every 30 seconds or so in the log file as I recall.
This can cause problems if we have an ongoing event, lose power for
some reason, then come back up and suck in the logs in order to get
the tactical screen back:  If real-time packets come in from
stations of interest before/during the time that the log is being
read, we get screwy tracks as they all get merged.

If we had full-blown timestamps in the log file for each packet and
used those timestamps to do inserts into our database, we could
reconstruct the proper track no matter what was coming in or when.

--
Curt, WE7U			    archer at eskimo dot com
Arlington, WA, USA		http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"



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