HI Chris, in Australia we have a similar situation but I have found customising the reports to be sufficient. I have used METRICWX as the database units from the start, so I can read sensible numbers there. I suppose our main difference is standardising on hectoPascals for pressure, but that happens to be the same as mbar, so I have simply used that in the reports.
Cameron. On Wednesday, 26 August 2020 at 5:01:46 pm UTC+10 [email protected] wrote: > I’ve extended the database and filled in all the calculations for the past > 14 years. Very nice to have all that extra data! > > I’ll see if I can figure out how to add the kPa but if someone smarter > than me gets to it first, I won’t complain. :) Thank you Tom for your > blessing! > > Thank you all for your quick help and advice. > Cheers > Chris > > On Aug 25, 2020, at 5:00 PM, gjr80 <[email protected]> wrote: > > StdWXCalculate knows how to calculate humidex, in fact if you are running > WeeWX 3.2.0 or later chances are humidex is already appearing in your > loop packets and archive records (provided its pre-reqs outTemp and > outHumidity exist in the loop packet/archive record) it's just not saved > to database due to humidex not being in your database schema. However, > field humidex (and humidex1) exist in the wview_extended schema which was > introduced in WeeWX v4.0.0 and this has been the default schema for new > installs since WeeWX 4.0.0 (note upgrades continue to use the schema that > was in use before the upgrade so if upgrading WeeWX 3.x to WeeWX 4.x you > will not be changed to the wview_extended schema). In terms of units I > understand that humidex is technically a unitless number but it is > effectively interpreted as a temperature, humidex was added to > group_temperature as of WeeWX 3.5.0 so normal WeeWX unit > conversions/formatting of humidex is available. > > In summary, if you are using WeeWX 4.x and the wview_extended schema > chances are you will see humidex appear in your database and it can then > be used in reports/plots just as any other observation. > > Gary > On Wednesday, 26 August 2020 at 04:59:04 UTC+10 [email protected] wrote: > >> Look here: >> >> http://weewx.com/docs/customizing.htm#customizing_units >> >> I did check the great resource in the sky (Wikipedia), and indeed Canada >> is an exception in that they use kPa. It might be reasonable to add kPa to >> the weewx.units file itself, but Tom would be the decider on that. >> >> Humidex might best be done with xtypes as it is derived from temperature >> and dew point. I found xtypes less well documented, but I am using xtypes >> to derive aqi from pm2.5. It’s fairly straightforward. >> >> On Aug 25, 2020, at 11:34 AM, Chris Alemany <[email protected]> wrote: >> >> Yes, thanks for that. I do change the units for some reports, >> unfortunately kilopascal does not exist as a selectable unit which is the >> crux of the issue, so I was looking at different ways of adding that unit >> and possibly Humidex as an available value as well. >> >> >> I’m going to take a peak at the aqi extension to see if I can use it as >> an example for what I need to do. >> >> Cheers >> Chris >> >> On Aug 25, 2020, at 11:08 AM, John Kline <[email protected]> wrote: >> >> You weren’t almost there as you were attempting to change the units >> stored in the database. >> >> Have a look at the following for changing your reports. You don’t have >> to change every report as you can set defaults for all reports. >> http://weewx.com/docs/customizing.htm#how_to_change_units >> >> On Aug 25, 2020, at 10:39 AM, Chris Alemany <[email protected]> wrote: >> >> Hi all, >> >> Yes, I noticed last night when I was rooting around in all the various >> weewx files (I guess I was creating a “fork” as I was modifying the weewx >> bin files themselves, _ini_.py, units.py etc to add in the new system) for >> mentions of units, that many extensions seemed to make the same 3-way >> assumption on units. So perhaps that method is not worth the effort. >> >> I’m not interested in having the database itself use Canadian Units >> (though extending it for Humidex readings would be useful), only that I’d >> be able to set the units as simply and widely as I can across all skins and >> extensions as I have multiple going at once. Thought I was almost there. :) >> >> Cheers for the suggestions, >> Chris >> >> On Aug 25, 2020, at 8:54 AM, John Kline <[email protected]> wrote: >> >> Remember that just because something is stored in the database in units >> that are not “Canadian”, that doesn’t mean you are stuck with that unit in >> reports or graphs. >> >> My two cents is that you should be spending your time getting the units >> you want to see in the skin(s) you are using. >> >> On Aug 25, 2020, at 8:03 AM, David VE3STI <[email protected]> wrote: >> >> I'm not a programmer so I don't have helpful suggestions. But as a >> Canadian user, I hope that you figure this out. I use the "metric" option >> but think of wind speed in kph, not m/s, for example. I did get the Humidex >> added (a long time ago - I forget how I did it other than I know I didn't >> do the programming but found that someone else had already figured out and >> I just followed the instructions!) >> >> Just as I type this, Tom's reply popped up.. Guess it won't be easy to >> add a new "Canadian option". The instructions for changing individual units >> is in the documentation but if you could make a "Canada-specific" set >> (cookbook style) that would be really useful for those of us who are >> users-but-not-programmers. >> >> Keep us posted. >> >> David >> >> On Monday, August 24, 2020 at 11:37:18 p.m. UTC-4 [email protected] >> wrote: >> >>> Hi All, >>> >>> I'm trying to extend weewx so that there is a 4th option for unit >>> systems called "CANMETRICWX" (Canadian Metric). >>> >>> This would be the same as "METRIC" except rain values are in mm and >>> pressure values are in kPa and eventually would also include a "Humidex" >>> calculation as well. >>> >>> I thought I had added everything I needed throughout the file system for >>> the addition of the units system but I'm running into the following >>> complaint on startup: >>> >>> "AttributeError: module 'weewx' has no attribute 'CANMETRICWX'" >>> >>> Not being familiar enough with python, I am stumped as to where I can >>> add that attribute. Any help greatly appreciated. >>> >>> Cheers >>> >>> Chris >>> >> >> -- >> 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/f52611dc-6ae8-4864-9eda-5d252e9a5404n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/weewx-user/f52611dc-6ae8-4864-9eda-5d252e9a5404n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "weewx-user" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/weewx-user/NO7igS5iBAo/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/weewx-user/0913D44A-2766-4FB6-97B8-FE88BE3488D0%40johnkline.com >> >> <https://groups.google.com/d/msgid/weewx-user/0913D44A-2766-4FB6-97B8-FE88BE3488D0%40johnkline.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/CD4DC81D-007D-4F07-8530-CFAADF9D32C4%40gmail.com >> >> <https://groups.google.com/d/msgid/weewx-user/CD4DC81D-007D-4F07-8530-CFAADF9D32C4%40gmail.com?utm_medium=email&utm_source=footer> >> . >> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "weewx-user" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/weewx-user/NO7igS5iBAo/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/weewx-user/D34F9490-BE38-4A55-8D9E-2CA9E8EEA131%40johnkline.com >> >> <https://groups.google.com/d/msgid/weewx-user/D34F9490-BE38-4A55-8D9E-2CA9E8EEA131%40johnkline.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/AA0789D1-9F9F-4A1F-B254-8D47A7CD32AF%40gmail.com >> >> <https://groups.google.com/d/msgid/weewx-user/AA0789D1-9F9F-4A1F-B254-8D47A7CD32AF%40gmail.com?utm_medium=email&utm_source=footer> >> . >> >> > -- > You received this message because you are subscribed to a topic in the > Google Groups "weewx-user" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/weewx-user/NO7igS5iBAo/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/9282d65e-50d5-4cbf-802f-0da24962d3f4n%40googlegroups.com > > <https://groups.google.com/d/msgid/weewx-user/9282d65e-50d5-4cbf-802f-0da24962d3f4n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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