Re: Class=weather.report

[Kevin Hawkins <yahoogroupskh@xxxxxxxxxxxxxx>]

Hi James,

I quickly looked over the wether display message KT posted - and was a
bit concerned over the extratemp3=-100.0 type approach as it doesn't
convey the meaning of the data source too well - but OTOH I guess a
weather station might have a feature allowing many temp sensors attached
(1-wire) so maybe it's the only way.   Certainly most seem to have
indoor sensor capability that we could support.

We also need to think of an easy way to support reporting of periodic
information eg last n minutes as different hardware stations probably
have different inbuilt periods (last hour, last 10 mins, last 15 mins
etc) .  Also previous periods often used in barometric trends etc.
pressure-2hrs pressure-4hrs etc.   Maybe we need some different messages
within the schema to handle such historic rather than current data.

One thing I do want to avoid is making the schema two way ( or at least
supporting a send only implementation that can report historic data) as
this makes it so much easier for implement.

Here is the readilly accessible information  Cumulus currently can
provide .  It clarifies its units in separate fields eg mph kph

Field  Example    Description
1      18/10/08   date (always dd/mm/yy)
2      16:03:45   time (always hh:mm:ss)
3      8.4        outside temperature
4      84         relative humidity
5      5.8        dewpoint
6      24.2       wind speed (average)
7      33.0       latest wind speed
8      261        wind bearing
9      0.0        current rain rate
10     1.0        rain today
11     999.7      barometer
12     W          wind direction
13     6          wind speed (beaufort)
14     mph        wind units
15     C          temperature units
16     mb         pressure units
17     mm         rain units
18     146.6      wind run (today)
19     +0.1       pressure trend value
20     85.2       monthly rain
21     588.4      yearly rain
22     11.6       yesterday's rainfall
23     20.3       inside temperature
24     57         inside humidity
25     3.6        wind chill
26     -0.7       temperature trend value
27     10.9       today's high temp
28     12:00      time of today's high temp (hh:mm)
29     7.8        today's low temp
30     14:41      time of today's low temp (hh:mm)
31     37.4       today's high wind speed (average)
32     14:38      time of today's high wind speed (average) (hh:mm)
33     44.0       today's high wind gust
34     14:28      time of today's high wind gust (hh:mm)
35     999.8      today's high pressure
36     16:01      time of today's high pressure (hh:mm)
37     998.4      today's low pressure
38     12:06      time of today's low pressure (hh:mm)
39     1.8.2      Cumulus version
40     448        Cumulus build
41     36.0       10-minute high gust
42     10.3       heat index
43     10.5       humidex
44                UV
45                ET
46                Solar radiation


Cheers Kevin









James Traynor wrote:
>
> Hi,
>  Yes definitely needs a little maintenance.  The original schema was
> for metar  data and later expanded for bbc data.  As weel as getting
> the extra items add for weather stations I would also like to get
> UV,pollen and pollution levels in there too, as they are now included
> in the bbc rss feeds.
> This is all quite good timing as I'm currently working on a  new
> version of my weather app.
> KT has posted a copy of a weatehrdisplay message, if you could post a
> copy of a cumulus message i'll get them combined and update the dcos.
> Back to the original question, a Rain=  field seems to be the way
forward!
> James
> Kevin Hawkins wrote:
>
>> Hi Paul,
>>
>> I think the weather schema needs a bit of maintenance - I'm
guessing
>> it was created to meet the needs of particular weather station
hardware
>> that probably didn't have a rain sensor. It also doesn't handle
min and
>> max reports and periodic trends eg barometric. I'll try and chat
with
>> James as he worked with the guys at 'Weather Display' for their
>> implementation and it may already have changes. I did check on the
mi4
>> website re any updated schema too.
>>
>> I have sent a couple of emails re 'Cumulus' to Steve at SandaySoft
>> to solicit his input and hopefully to get some extra data included
-
>> particularly as I have my Maplin station installed now - and I
believe
>> James has one too.
>>
>> In xAP there is a great way to report all telemetry/sensor data
and
>> that is the TSC schema - which handles units and min/max etc - but
it's
>> considerably more complex to implement as it is a two way schema -
and
>> currently Cumulus and Weather Display are both xAP senders only.
>>
>> Kevin
>>
>> wheelbarrowuk2001 wrote:
>> >
>> > Hi Guys,
>> >
>> > I notice that in the Class=weather.report there is no option
for
>> > rainfall. Where in XAP would you expect to send this bit of
>> > information.
>> >
>> > Regards
>> >
>> > Paul
>> >
>> >
>>
>
>


------------------------------------