Tom - before I try the new accum I need to check that I have not misled you!! I only checked the contents of the db tables - windgustdir in archive, daily windgustdir table and maxwinddir in daily wind table. Was my answer misleading or as expected?
Andrew On Saturday, 5 May 2018 14:35:04 UTC+3, Thomas Keffer wrote: > > Because Andrew reported that the new accum does not make any difference, > it appears that FO stations do indeed define wind gust that way: it's the > max wind seen during a loop period, which can be greater than the wind > speed for that period. > > I don't know if setting windGustDir to windDir is inventing data, but we > are making an assumption: that the gust is in the same direction as the > average wind. But, this is the same assumption we are making for *every* > station > that uses software record generation and/or does not emit windGust. > > Try this version of accum.py. It explicitly substitutes windDir when > windGustDir is unavailable. > > -tk > > > On Fri, May 4, 2018 at 8:51 PM, gjr80 <[email protected] <javascript:>> > wrote: > >> Just playing a little devils advocate here; but are we bordering on >> inventing data? The FO stations provide windSpeed, windDir and windGust per >> loop packet. It would appear that windSpeed is some sort of average over >> the period and windGust is presumably the max wind speed seen over the loop >> period. It appears now that we are setting windGustDir to windDir, but is >> that necessarily correct, we are not stretching it a little are we? >> >> I also don't see any inconsistency between the Standard skin pages in >> terms on wind/speed/dir. You need to compare apples with apples not apples >> with oranges. index.html shows the current conditions (windSpeed/windDir >> based) in the top left pane and day max values (wind.max/wind.maxdir based) >> in the lower left pane. week.html shows the week max values >> (wind.max/wind.maxdir based) in the top left pane and month max values >> (wind.max/wind.maxdir based) in the lower left pane. The FO problem is with >> windGustDir/wind.maxdir so anywhere wind.maxdir is used will show N/A. So >> given that limitation the Standard skin pages are completely consistent. >> >> Gary >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
