I'm trying to get a calculated AQI value shown on my index.html page, but getting index.html.tmpl right is failing me.
In the .tmpl file, I have at the top:
#def getAQI(C_p)
#set breakpoints = [
{'BP_lo': 0.0, 'BP_hi': 12.0, 'I_lo': 0, 'I_hi': 50},
{'BP_lo': 12.1, 'BP_hi': 35.4, 'I_lo': 51, 'I_hi': 100},
{'BP_lo': 35.5, 'BP_hi': 55.4, 'I_lo': 101, 'I_hi': 150},
{'BP_lo': 55.5, 'BP_hi': 150.4, 'I_lo': 151, 'I_hi': 200},
{'BP_lo': 150.5, 'BP_hi': 250.4, 'I_lo': 201, 'I_hi': 300},
{'BP_lo': 250.5, 'BP_hi': 350.4, 'I_lo': 301, 'I_hi': 400},
{'BP_lo': 350.5, 'BP_hi': 500.4, 'I_lo': 401, 'I_hi': 500}
]
#for bp in breakpoints
#if C_p >= bp.BP_lo and C_p <= bp.BP_hi
#set aqi = ((bp.I_hi - bp.I_lo) / (bp.BP_hi - bp.BP_lo)) * (C_p - bp.BP_lo) + bp.I_lo
#return int(aqi)
#end if
#end for
#return None ## If PM2.5 is out of range
#end def
and then later in the template file, that function is called to make a card with the AQI value shown, as calculated from my $day.pm2_5out.avg value:
#if $name == "AQI"
#set aqi = $getAQI($day.pm2_5out.avg)
<div class="row">
<div class="col-6">
<h4 class="h2-responsive">This is the AQI:$aqi</h4>
<p class="text-muted">
## PM2.5: $day.pm2_5out.avg μg/m³
</p>
</div>
</div>
This is not working. Fiddling with it, at best I can get a card to generate that shows the title, and the "This is the AQI:" (and the pm2_5out.avg when uncommented), but no $aqi value. At worst, '<class 'TypeError'>' or '<class 'NameError'>' or '<class 'AttributeError'>'..... Best guess is I'm doing the lookup table wrong.
I'm fully expecting that I can do a calculation within a template, based on an $observation (a la $growdeg/1.8 to get GDD in degree_C), but some combination of syntax, placement/location in the template, or simply template limitations are stopping me.
I know there are extensions to do AQI. They seem to pull from external data sources (NowCast, etc), and extend the database schema with additional observation types. I can probably tweak them to use my recorded PM measurements. But I have the base $pm2_5out variable and equation to calculate AQI myself, and don't want to record it as an observation- just shown for ephemeral display only, in my "Current" page.
Am I way out of line, or can someone nudge me in the right direction?
--
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 visit
https://groups.google.com/d/msgid/weewx-user/dd0ff07e-070e-4c3e-8045-93c579bbf93bn%40googlegroups.com.
