Well, fooey...
Just like that I figured it out. =D
Apparently we're not allowed to issue calibration statements for the same
metric more than once.
The following works, because I am making up two "fake" place-holder variables
first, windDirMod and windGustDirMod.
Since those aren't known to weewx already, they're fine.
Then after those I am modifying the actual windDir and windGustDir metrics only
once.
Was this an RTFM? If so, sorry I missed it. :S
Meanwhile, how is my approach?
Is there a simpler, more efficient way?
windCalibDegrees=-90.0
windDirMod = ((windDir + windCalibDegrees) % 360) if windDir is not None else
None
windDir = (windDirMod + 360 if windDirMod < 0 else windDirMod) if windDir is
not None else None
windGustDirMod = ((windGustDir + windCalibDegrees) % 360) if windGustDir is not
None else None
windGustDir = (windGustDirMod + 360 if windGustDirMod < 0 else windGustDirMod)
if windGustDir is not None else None
Regards,
Leon
--
Leon Shaner :: Dearborn, Michigan (iPad Pro)
> On Apr 15, 2019, at 3:36 PM, Leon Shaner <l...@isylum.org> wrote:
>
> Hey, WeeWX'ers! =D
>
> I am baffled by a weewx.conf parsing error while trying to do a windDir and
> windGustDir calibration adjustment. :-(
>
> I tested my python code already with an external script and that's working
> fine, but weewx doesn't like the relevant lines in the weewx.conf...
>
> Apr 15 15:15:37 nixie weewx[12130]: engine: Error while parsing configuration
> file /etc/weewx/weewx.conf
> Apr 15 15:15:37 nixie weewx[12130]: **** Reason: 'Parsing failed with
> several errors.
> First error at line 447.'
>
> Below is what I have in the weewx.conf.
>
> Line 447 corresponds to the second occurrence of windDir, where I am checking
> if it is < 0.
>
> # This section can adjust data using calibration expressions.
>
> [StdCalibrate]
>
> [[Corrections]]
> # For each type, an arbitrary calibration expression can be given.
> # It should be in the units defined in the StdConvert section.
> # Example:
> #foo = foo + 0.2
>
> windCalibDegrees=-90.0
>
> windDir = ((windDir + windCalibDegrees) % 360) if windDir is not None
> else None
> windDir = (windDir + 360 if windDir < 0 else windDir) if windDir is
> not None else None
> windGustDir = ((windGustDir + windCalibDegrees) % 360) if windGustDir
> is not None else None
> windGustDir = (windGustDir + 360 if windGustDir < 0 else windGustDir)
> if windGustDir is not None else None
>
>
> And here's how I am testing it outside of weewx:
>
> sqlite3 /var/lib/weewx/weewx.sdb "select windDir, windGustDir from archive
> where dateTime>1555351400;" | awk -F\| '{print $1 " " $2}' | while read
> windDir windGustDir ; do ./windcalib.py $windDir $windGustDir; done
>
> Where windcalib.py contains
>
> #!/usr/bin/python3
>
> import sys
>
>
> if len(sys.argv) != 3:
> sys.exit("Please pass windDir and windGustDir as args")
>
>
> windDir = float(sys.argv[1])
> windGustDir = float(sys.argv[2])
> print ("INPUT : windDir =", windDir, "windGustDir =", windGustDir)
>
> windCalibDegrees=-90.0
>
> windDir = ((windDir + windCalibDegrees) % 360) if windDir is not None else
> None
> windDir = (windDir + 360 if windDir < 0 else windDir) if windDir is not None
> else None
> windGustDir = ((windGustDir + windCalibDegrees) % 360) if windGustDir is not
> None else None
> windGustDir = (windGustDir + 360 if windGustDir < 0 else windGustDir) if
> windGustDir is not None else None
>
> print ("OUTPUT: windDir =", windDir, "windGustDir =", windGustDir)
>
>
> Regards,
> \Leon
> --
> Leon Shaner :: Dearborn, Michigan (iPad Pro)
>
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