thanks (i think). if i use this - and i have yet to come up with a feasible alternative - i think i’ll bury it under a pile of leaves at the bottom of the file...
> On 2 Nov 2020, at 11:14 pm, Tom Keffer <[email protected]> wrote: > > I can't think of any elegant way to do it, but an inelegant way is to monkey > patch ValueHelper. > > import weewx.units > > def category(vh): > if vh.raw is None: > result = "N/A" > elif vh.raw < 50: > result = "good" > elif vh.raw < 100: > result = "moderate" > else: > result = "bad" > return result > > weewx.units.ValueHelper.category = category > > The ValueHelper class has been pretty stable for a long time, so you're > unlikely to break things in an upgrade. But, there's no guarantees! > > -tk > > On Mon, Nov 2, 2020 at 1:12 AM Graham Eddy <[email protected] > <mailto:[email protected]>> wrote: > there is an existing optional formatting tag ‘ordinal_compass’ for data_type > ‘windDir’ > eg. where $current.windDir.raw = 45, $current.windDir.ordinal_compass = “NE" > > i would like to create a new optional formatting tag ‘category’ for new xtype > ‘aqi_pm2_51’ (air quality index derived PM2.5) > e.g. where $current.aqi_pm2_51.raw = 75, $current.aqi_pm2_51.category = > “Moderate” > > how do i create the new optional formatting tag? > so far all i have found is to extend weewx.units.ValueHelper - i guess a > function called “catgeory” would be picked up to do the formatting. but this > would require changing rather than extending weewx codebase. > have i missed something obvious? > > -- > 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] > <mailto:weewx-user%[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/487EFABB-872F-449C-A685-8BB5FD83EF98%40gmail.com > > <https://groups.google.com/d/msgid/weewx-user/487EFABB-872F-449C-A685-8BB5FD83EF98%40gmail.com>. > > -- > 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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/CAPq0zEA-biYRcrTk__y2-Avam%2BcW9U0-z0iDjxc%2BdW%3DH-dkq1g%40mail.gmail.com > > <https://groups.google.com/d/msgid/weewx-user/CAPq0zEA-biYRcrTk__y2-Avam%2BcW9U0-z0iDjxc%2BdW%3DH-dkq1g%40mail.gmail.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/B6BE9719-0EC9-4DF2-A68A-A34A272CF1DA%40gmail.com.
