It's available (temporarily) here: http://rh3.operamail.com/windrose_testing.svg
On Thursday, April 5, 2018 at 3:45:58 PM UTC-4, Alec Bennett wrote: > > Possible to see the generated output of that somewhere? > > On Thu, Apr 5, 2018 at 12:36 PM, RobbH <holm...@gmail.com <javascript:>> > wrote: > >> I finally came to the realization that everything I wanted to do could be >> done with the Cheetah engine, and even learned a tiny bit of Python in the >> process. The following code, added to index,html.tmpl (or some other >> template) generates a crude compass rose with up to two directional vanes, >> one (in red) for gust direction and one (in blue) for wind direction. The >> length of the vanes is proportional to the corresponding speed value, on a >> logarithmic scale. >> >> #import math >> <svg version="1.1" baseProfile="full" width="200" height="200" >> xmlns="http://www.w3.org/2000/svg";> >> <!-- draw outer ring, then 10-degree tickmarks, 2 gray inner >> circles and 3 scale labels (1, 10, 100) --> >> <circle cx="90" cy="85" r="75" stroke="black" stroke-width="5" >> stroke-dasharray="1,12.08" fill="transparent" /> >> <circle cx="90" cy="85" r="80" stroke="lightgray" >> stroke-width="10" fill="transparent" /> >> <circle cx="90" cy="85" r="38" stroke="lightgray" >> fill="transparent" /> >> <circle cx="90" cy="85" r="56" stroke="lightgray" >> fill="transparent" /> >> <text x="120" y="26" font-size="8" text-anchor="middle" >> fill="gray">100</text> >> <text x="112" y="42" font-size="8" text-anchor="middle" >> fill="gray">10</text> >> <text x="103" y="58" font-size="8" text-anchor="middle" >> fill="gray">1</text> >> <!-- draw compass rose background (2 polygons) then 4 directional >> letters and innermost circle --> >> <polygon points="90 35, 100 75, 140 85, 100 95, 90 135, 80 95, 40 >> 85, 80 75" fill="lightgray" transform="rotate(45 90 85)" /> >> <polygon points="90 25, 100 75, 150 85, 100 95, 90 145, 80 95, 30 >> 85, 80 75" fill="lightgray" /> >> <text x="90" y="22" font-size="16" text-anchor="middle" >> fill="gray">N</text> >> <text x="90" y="159" font-size="16" text-anchor="middle" >> fill="gray">S</text> >> <text x="22" y="91" font-size="16" text-anchor="middle" >> fill="gray">W</text> >> <text x="158" y="91" font-size="16" text-anchor="middle" >> fill="gray">E</text> >> <circle cx="90" cy="85" r="20" stroke="black" fill="white" /> >> <!-- put current values for gust and wind speed in inner circle, >> then calculate and draw vanes if direction given and speed > 0 --> >> <text x="90" y="83" font-size="12" text-anchor="middle" >> fill="orangered">$current.windGust.formatted</text> >> <text x="90" y="97" font-size="12" text-anchor="middle" >> fill="dodgerblue">$current.windSpeed.formatted</text> >> #if $current.windGustDir.formatted != " N/A" and >> float($current.windGust.formatted) > 0 >> #set $wg = 65 - 18 * (1 + >> math.log(float($current.windGust.formatted), 10)) >> <polygon points="90 $wg, 100 65, 80 65" fill="orangered" >> transform="rotate($current.windGustDir.formatted 90 85)" /> >> #end if >> #if $current.windDir.formatted != " N/A" and >> float($current.windSpeed.formatted) > 0 >> #set $ws = 65 - 18 * (1 + >> math.log(float($current.windSpeed.formatted), 10)) >> <polygon points="90 $ws, 95 65, 85 65" fill="dodgerblue" >> transform="rotate($current.windDir.formatted 90 85)" /> >> #end if >> </svg> >> >> >> This is set up to work with speeds measured in miles per hour. Some >> modification would be needed to make it work with other units. I hope >> someone will find it useful. Improvements welcome. >> >> >> On Monday, April 2, 2018 at 8:21:51 PM UTC-4, RobbH wrote: >>> >>> Very nice! That's not exactly what I'm attempting right now, but I'll >>> keep in mind for the future. >>> >>> I hope you'll add it to the weewx wiki, so it'll be easy to find in the >>> future. >>> >>> I didn't find the realtime gauge data extension in the wiki, either, but >>> found it here: >>> >>> https://github.com/gjr80/weewx-realtime_gauge-data >>> >>> >>> >>> On Sunday, April 1, 2018 at 10:32:53 PM UTC-4, Alec Bennett wrote: >>>> >>>> > On the other hand, it may be possible to do all I need with >>>> javascript, and I'll probably try that first. >>>> >>>> If you want to use javascript, you might be interested in this project >>>> of mine: >>>> >>>> github.com/wrybread/Weather-Underground-Style-Real-Time-Gauge >>>> >>>> Personally I think javascript is a good method for current wind >>>> conditions, since it makes it easy to update a graphic continually. This >>>> live demo should update every 2 seconds or so (every time the wind >>>> indicator turns green is an update): >>>> >>>> sinkingsensation.com/wu_gauge/ >>>> >>>> I should really update that though, since it's very small on my screen. >>>> A CSS issue. Or here (css optimized for mobile): >>>> >>>> sinkingsensation.com/wind >>>> >>>> Note that this requires enabling the RTC ("real time gauge") extension >>>> in weewx. And fyi the effect is achieved by rotating the circle to the >>>> current wind direction. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>>> A crude version, without making the wind directional pointer >>>>> proportional to wind speed, can be done with svg graphics and no outside >>>>> help. I've posted that to the old thread that I linked in the first post. >>>>> >>>>> >>>>> On Friday, March 30, 2018 at 8:27:41 PM UTC-4, RobbH wrote: >>>>>> >>>>>> Maybe, at long last, I'm going to have to buckle down and learn >>>>>> enough of Python to do this! >>>>>> >>>>>> >>>>>> On Friday, March 30, 2018 at 6:51:49 PM UTC-4, vince wrote: >>>>>>> >>>>>>> On Friday, March 30, 2018 at 1:54:30 PM UTC-7, RobbH wrote: >>>>>>>> >>>>>>>> Still pursuing this, and I have learned how to generate the sort of >>>>>>>> image I want, but not within Weewx. Is it possible call an external >>>>>>>> program >>>>>>>> (shell script) during each report cycle? >>>>>>>> >>>>>>>> >>>>>>> It is possible to do darn near anything if you write an extension to >>>>>>> do so.....assuming the account weewx runs as has privileges to do so. >>>>>>> >>>>>>> >>>>>> -- >> 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/FAaVIAv-Hfs/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> weewx-user+...@googlegroups.com <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 weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
