[Xastir] Own Weather Reports

[Clay Jackson]

I'll take a look tonite as well - in this case, since it's my own data;
I guess positionless is less of an abomination, but I understand.....


On Sat, 2005-02-05 at 17:30 -0800, Curt Mills wrote:
> On Sat, 5 Feb 2005, Clay Jackson wrote:
> 
> > I'm having some problems wWeather reports.  I've got a Davis WMII,
> > w/meteo capturing the data, and db2APRS sending the data from a
> > different system to Xastir.  I've hacked db2APRS a bit, to make it
> > conform to the APRS 1.1 spec for positionless weather data -  so, it's
> > sending packets that look like this:
> > 
> > _0205101900c161s001g005t040r000p009P008h88b10225xDvs
> 
> I should have thought about this from some of your earlier messages
> about it:  Positionless weather is considered to be an abomination
> by a lot of people.  I think it was added to the spec merely because
> one of the weather stations was able to put out that format
> directly.  Most people that have commented on this have suggested
> that some other weather format be used normally that includes the
> position of the weather station along with each packet.  That way
> you don't have to combine posits with WX packets in order to have a
> complete picture.
> 
> 
> > According to the spec r000 is rain in the last hour, p009 is rain in the
> > last 24 hours and P008 is rain since midnite.  HOWEVER, Xastir is
> > reporting total rain of 0.09 and 0.00 for the other rain values.  The
> > other data points (wind, temp, humidity) all look OK.
> 
> Xastir calculates this stuff itself as I recall.  I've been into
> that code more than once, and rewrote part of it, but it's been long
> enough that I don't remember all the details anymore.  As I recall
> though Xastir ignores the values for 24-hours and since-midnight
> that are sent by the weather station and computes them itself.  If
> you haven't run Xastir connected to the WX station that long, the
> values won't match the values that the WX station might be telling
> you.
> 
> 
> > Also, I'm not seeing anything in the Dew Point, High Wind, Wind
> > Chill/Heat Index and Hi and Low Temps - is Xastir expecting those from
> > the Weather Station, or calculating them?
> 
> I'd have to go look at the code.  I think most things come from the
> weather station, but of course most things aren't put out by most
> weather stations, so they don't ever get filled in.
>