omg... it was right there in the wiki. So sorry to bother you. Plugged in the formula and it's working great. Thanks!
On Monday, July 4, 2022 at 5:46:31 PM UTC-4 gjr80 wrote: > Ecowitt Gateway devices provide a measure of luminosity in lux rather than > a measure of solar insolation in watts/square metre (as used by WeeWX in > the radiation field). There is a simple linear approximation for radiation > given a luminosity value in lux by dividing the luminosity value by 126.7. > This is what Ecowitt Gateway devices use when posting to Ecowitt.net or > WeatherUnderground etc. Within WeeWX it is not appropriate for the Ecowitt > gateway driver to implement this approximation , rather it should be > applied by adding a correction entry to the [StdCalibration] > [[Corrections]] stanza in weewx.conf. More detail (including > implementation of the radiation field approximation) is covered in the > Ecowitt gateway device wiki page Understanding GW1000 radiation fields > <https://github.com/gjr80/weewx-gw1000/wiki/Understanding-GW1000-radiation-fields> > . > > Once you have the radiation field being calculated you should should find > that ET is also calculated provided you have the other pre-requisites > outlined in Tom's post are available. > > Gary > On Tuesday, 5 July 2022 at 07:14:39 UTC+10 [email protected] wrote: > >> In order to calculate ET, you'll need outside temperature, radiation, and >> humidity. From your query, you don't have radiation, and possibly the >> others. Make sure they are all there. >> >> On Mon, Jul 4, 2022 at 9:49 AM John Hill <[email protected]> wrote: >> >>> Sorry - this is going to sound poorly informed... but here it goes. >>> >>> I've been running weewx for years since the 3.x days. Using the >>> interceptor driver - first with the Ambient Weather devices, now with >>> Ecowitt using a GW1000 as a gateway. >>> >>> During that time I made numerous tweaks to the file system, changing >>> skins, schemas, adding extensions, removing extensions, running through >>> hubitat, then nodered, etc. Of course, I'm not very good at documentation, >>> so each change I made would eventually get pushed out of my brain in favor >>> of the new project du jour. >>> >>> I noticed a new gw1000 extension and thought maybe now would be a good >>> time to wipe the slate and see what works out of the box. >>> >>> Surprisingly, most everything does. I do see some label and unit >>> changes for radiation (used to be wmp2/radiation, now it's lux/luminosity). >>> >>> But the most noticeable changes is I'm now missing ET. Not sure how. I >>> don't remember having to do anything in my prior install to get it to >>> calculate. >>> >>> confirmed in sqlite that it's not in the archive: >>> >>> sqlite> select dateTime,ET,radiation,UV from archive order by dateTime >>> desc limit 4; >>> >>> 1656952200|||6.0 >>> >>> 1656952140|||4.0 >>> >>> 1656952080|||2.0 >>> >>> 1656952020|||3.0 >>> >>> >>> It's in my wview.py schema and in my skins.conf: >>> >>> [[[dayET]]] >>> >>> # Make sure the y-axis increment is at least 0.02 for the >>> ET plot >>> >>> yscale = None, None, 0.02 >>> >>> plot_type = bar >>> >>> [[[[ET]]]] >>> >>> aggregate_type = sum >>> >>> aggregate_interval = hour >>> >>> label = Evapotranspiration (hourly total) >>> >>> >>> have tried both prefer-hardware and software in my weewx.conf for ET >>> calcualtion. >>> >>> Hope it's obvious, but what am I missing? >>> >>> -- >>> 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]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/weewx-user/1549e44c-8848-44ef-8c04-81444b2cd034n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/weewx-user/1549e44c-8848-44ef-8c04-81444b2cd034n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/15ff4629-7f64-48d4-b314-e5a3e258ccban%40googlegroups.com.
