Current Windspeed in Beaufort ? Bft?

[Ronald Wildner]

I am wondering if there is any hint to display current WindSpeed in Beaufort !
I used google and the search -function, but could not find anything adequate ;-)

[Andrew Milner]

To convert knots to Beaufort add 5 to the windspeed in knots, then divide by 5.

To convert mph to Beaufort add 6 and divide by 6.

[Ronald Wildner]

Thanks for the quick anwer ...
I am pretty new to weewx ...

 how can I now  add the calculated bft to my template ... (something like $current.windSpeed.bft) ?

[Andrew Milner]

the simplest way would be to replace $current.windSpeed with something like (($current.windSpeed.raw + 5) * 5) in the templates wherever needed I would have thought.  More comolex to actually add the unit type to be generally available, but possible - read the user manual for more details on unit types  - under extensions I think, but could be ustomisation - not sure which it comes under!!

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[Ronald Wildner]

Thanks !

 With $current.windSpeed.raw and some Javascript  it was easy and fits perfectly for me ! .raw was what I was looking for ;-)

[Eelco F]

I do have a question on this.

I noticed that as of weewx 3.2 there is a beaufort calculation in Stdwxcalculate, right?

Now how do I get beaufort values in my reports? Until now I used javascript too, but it should be possible directly from weewx?

Ef

Op zondag 16 maart 2014 09:08:27 UTC+1 schreef Ronald Wildner:

[wysiwyg]

Hi

in case you like PHP, I have done this Beaufort calculation this way (with a small PHP code inside my template file)

<?php 

            \$vitesse = 0$current.windSpeed.raw;

            if ("$unit.label.windSpeed" == " km/h") {

              \$bff="0-Calme";

              if (\$vitesse > 1) \$bff="1-Trés Légère Brise";

              if (\$vitesse > 6) \$bff="2-Légère Brise";

              if (\$vitesse > 12) \$bff="3-Petite Brise";

              if (\$vitesse > 20) \$bff="4-Jolie Brise";

              if (\$vitesse > 29) \$bff="5-Bonne Brise";

              if (\$vitesse > 39) \$bff="6-Vent Frais";

              if (\$vitesse > 50) \$bff="7-Grand Frais";

              if (\$vitesse > 62) \$bff="8-Coup de Vent";

              if (\$vitesse > 75) \$bff="9-Fort Coup de Vent";

              if (\$vitesse > 89) \$bff="10-Tempête";

              if (\$vitesse > 103) \$bff="11-Violente Tempête";

              if (\$vitesse > 118) \$bff="12-Ouragan"; 

            }

          else {\$bff="to be updated for other than km/h"; }

          echo \$bff;

          ?>

The text is in french, but it should be easy to remove or replace by any language.

Also I handle only windspeed in km/h (just because it's my default unit and I was lazy to handle all units :-)). but it's easy to adjust too.

Best regards,

[wysiwyg]

Hi there!

I have seen  some mentions about beaufort in version logs and bit in the weewx code, but I was not able to figure out how to use it ?

I tried:  $current.beaufort....this works (it does not crash cheetah) but weird result:$current.beaufort=?'beaufort'?

I tried: month.beaufort.max: it does crash cheetah.

How can we use this ?

Best regards,

  

[gjr80]

Hi,

At the moment the weeWX tag system does not support Beaufort wind speeds. WeeWX has a function in bin/weewx/wxformaulas.py to calculate Beaufort wind speed but it is not used. You have seen Beaufort mentioned in the change log, Beaufort was added to the StdWXCalculate service but it is presently disabled; I am not sure why this is so - Matthew maybe able to answer that one.

So the only way to include Beaufort wind speed in a template now is through in-line python code in the template (example in the gauge-data.txt template here - code starts at line 170) or create a search list extension to calculate the Beaufort wind speed - this could use the beaufort() function in wxformuals.py. In theory, you could enable beaufort in StdWXCalculate and would then have access to the $current.beaufort tag in reports, but as I said I am not sure why this was disabled. Finally, you can do as you and others have and calculate it externally to weeWX if its to be used on a web page or elsewhere.

Gary

[mwall]

On Thursday, August 17, 2017 at 7:09:41 PM UTC-4, gjr80 wrote:

At the moment the weeWX tag system does not support Beaufort wind speeds. WeeWX has a function in bin/weewx/wxformaulas.py to calculate Beaufort wind speed but it is not used. You have seen Beaufort mentioned in the change log, Beaufort was added to the StdWXCalculate service but it is presently disabled; I am not sure why this is so - Matthew maybe able to answer that one.

i did the beafort implementation in StdWXCalculate, then i realized that beafort should be just another unit for windSpeed, not a separate observation type

imho you should be able to do:

$current.windSpeed.beafort

not

$current.beafort

[Andrew Milner]

That makes perfect sense Matthew - it should indeed just be another unit associated with windspeed , as you say.

[WindnFog]

If you want to avoid Java, I cobbled together some code based on gjr80's template and added it to /etc/weewx/skins/Standard/index.html.tmpl as follows:

##        Calculate today's highest Beaufort based on wind speed in knots
     
          #if $varExists('day.windSpeed') and $day.windSpeed.max.raw is not None
          #if $unit.unit_type.windSpeed == 'mile_per_hour'
          #set $kts = $day.windSpeed.max.raw * 0.8689762
          #elif $unit.unit_type.windSpeed == 'km_per_hour'
            #set $kts = $day.windSpeed.max.raw * 0.539956
          #elif $unit.unit_type.windSpeed == 'meter_per_second'
            #set $kts = $day.windSpeed.max.raw * 1.943844
          #elif $unit.unit_type.windSpeed == 'knot'
            #set $kts = $day.windSpeed.max.raw
          #else
            #set $kts = 0
          #end if
          #if $kts < 1
            #set $beaufort = 0
            #set $word_beaufort = 'Calm'
          #elif $kts < 4
            #set $beaufort = 1
            #set $word_beaufort = 'Light air'
          #elif $kts < 7
            #set $beaufort = 2
            #set $word_beaufort = 'Light breeze'
          #elif $kts < 11
            #set $beaufort = 3
            #set $word_beaufort = 'Gentle breeze'
          #elif $kts < 17
            #set $beaufort = 4
            #set $word_beaufort = 'Moderate breeze'
          #elif $kts < 22
            #set $beaufort = 5
            #set $word_beaufort = 'Fresh breeze'
          #elif $kts < 28
            #set $beaufort = 6
            #set $word_beaufort = 'Strong breeze'
          #elif $kts < 34
            #set $beaufort = 7
            #set $word_beaufort = 'High wind'
          #elif $kts < 41
            #set $beaufort = 8
            #set $word_beaufort = 'Gale'
          #elif $kts < 48
            #set $beaufort = 9
            #set $word_beaufort = 'Strong gale'
          #elif $kts < 56
            #set $beaufort = 10
            #set $word_beaufort = 'Storm'
          #elif $kts < 64
            #set $beaufort = 11
            #set $word_beaufort = 'Violent storm'
          #else
            #set $beaufort = 12
            #set $word_beaufort = 'Hurricane'
          #end if
          #else
            #set $beaufort = 'N/A'
          #end if

 Put the above somewhere near the top, and then modify the Since Midnight table by adding a couple of lines in the High Wind row:

                <td class="stats_label">
                  High Wind<br/>
                  High Beaufort Scale
                </td>
                <td class="stats_data">
                  $day.wind.max from $day.wind.gustdir at $day.wind.maxtime<br/>
                  $beaufort or $word_beaufort at $day.wind.maxtime
                </td>

- Paul VE1DX

https://www.ve1dx.net/

On Sunday, March 16, 2014 at 12:50:02 PM UTC-3, Ronald Wildner wrote:

Thanks !

 With $current.windSpeed.raw and some Javascript  it was easy and fits perfectly for me ! .raw was what I was looking for ;-)


Am Sonntag, 16. März 2014 12:53:38 UTC+1 schrieb Andrew Milner:

the simplest way would be to replace $current.windSpeed with something like (($current.windSpeed.raw + 5) * 5) in the templates wherever needed I would have thought.  More comolex to actually add the unit type to be generally available, but possible - read the user manual for more details on unit types  - under extensions I think, but could be ustomisation - not sure which it comes under!!

On 16 March 2014 11:12, Ronald Wildner <ronwi...@gmail.com> wrote:

Thanks for the quick anwer ...
I am pretty new to weewx ...

 how can I now  add the calculated bft to my template ... (something like $current.windSpeed.bft) ?
Am Sonntag, 16. März 2014 09:08:27 UTC+1 schrieb Ronald Wildner:

I am wondering if there is any hint to display current WindSpeed in Beaufort !
I used google and the search -function, but could not find anything adequate ;-)

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[david]

-> On Tue, 22 Aug 2017 09:38:00 -0700 (PDT) mwall took time to scribe <-

>On Thursday, August 17, 2017 at 7:09:41 PM UTC-4, gjr80 wrote:
>>
>> At the moment the weeWX tag system

>> <http://weewx.com/docs/customizing.htm#Tags> does not support Beaufort

>> wind speeds. WeeWX has a function in bin/weewx/wxformaulas.py to
>> calculate Beaufort wind speed but it is not used. You have seen Beaufort
>> mentioned in the change log, Beaufort was added to the StdWXCalculate
>> service but it is presently disabled; I am not sure why this is so -
>> Matthew maybe able to answer that one.
>>
>
>i did the beafort implementation in StdWXCalculate, then i realized that
>beafort should be just another unit for windSpeed, not a separate
>observation type
>
>imho you should be able to do:
>
>$current.windSpeed.beafort
>
>not
>
>$current.beafort
>

This did not work for me however I modified the code by Windnfog and now
have Beaufort showing on my site.



.-.-.-.-.-.-.

David Taylor, Puniho
'the place to be; beneath the Mountain, beside the Sea'
http://www.pwx.kiwi
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
whose computer uses linux/open source software, featuring
Mageia release 5 (Official) for x86_64, kernel 4.4.82-desktop-1.mga5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[david]

Thanks for this. After modifying it for current I having it working on my
site. I found that your code was missing an '$' for day.windSpeed.

-> On Tue, 22 Aug 2017 13:14:19 -0700 (PDT) WindnFog took time to scribe <-

[David Hathaway]

Thank you.  Worked perfectly for me.  Since we are likely to be hit by a tropical storm in the next day or two (I live in Houston, Texas), this will be pretty interesting.

[WindnFog]

I think I made a mistake on the cut and paste into the email and missed the $.  Glad it worked out for you. 

It was a quick and dirty coding example of one way to do it.  There may be better ways . . .

-- 
- Paul VE1DX

------------------

Paul M Dunphy
Lake Echo, Nova Scotia

https://www.ve1dx.net  <--- Weather station

https://www.ve1dx.net/ - private - private

[Stefan Schnidrig]

Hi Guys.
I've read this discussion here and wanted to ask you if there is any other solution than php or rewrite the file? There would have to be an easier option?

Thank you

Am Sonntag, 16. März 2014 09:08:27 UTC+1 schrieb Ronald Wildner:

[WindnFog]

I use this code in my  file:

##        Calculate today's current Beaufort based on wind speed in knots
     
          #set $current_kts = 0
          #if $varExists('day.windSpeed') and $current.windSpeed.raw is not None
          #if $unit.unit_type.windSpeed == 'mile_per_hour'
          #set $current_kts = $current.windSpeed.raw * 0.8689762
          #elif $unit.unit_type.windSpeed == 'km_per_hour'
            #set $current_kts = $current.windSpeed.raw * 0.539956
          #elif $unit.unit_type.windSpeed == 'meter_per_second'
            #set $current_kts = $current.windSpeed.raw * 1.943844
          #elif $unit.unit_type.windSpeed == 'knot'
            #set $current_kts = $current.windSpeed.raw
          #else
            #set $current_kts = 0
          #end if
          #if $current_kts < 1
            #set $current_beaufort = 0
            #set $word_current_beaufort = 'Calm'
          #elif $current_kts < 4
            #set $current_beaufort = 1
            #set $word_current_beaufort = 'Light air'
          #elif $current_kts < 7
            #set $current_beaufort = 2
            #set $word_current_beaufort = 'Light breeze'
          #elif $current_kts < 11
            #set $current_beaufort = 3
            #set $word_current_beaufort = 'Gentle breeze'
          #elif $current_kts < 17
            #set $current_beaufort = 4
            #set $word_current_beaufort = 'Moderate breeze'
          #elif $current_kts < 22
            #set $current_beaufort = 5
            #set $word_current_beaufort = 'Fresh breeze'
          #elif $current_kts < 28
            #set $current_beaufort = 6
            #set $word_current_beaufort = 'Strong breeze'
          #elif $current_kts < 34
            #set $current_beaufort = 7
            #set $word_current_beaufort = 'High wind'
          #elif $current_kts < 41
            #set $current_beaufort = 8
            #set $word_current_beaufort = 'Gale'
          #elif $current_kts < 48
            #set $current_beaufort = 9
            #set $word_current_beaufort = 'Strong gale'
          #elif $current_kts < 56
            #set $current_beaufort = 10
            #set $word_current_beaufort = 'Storm'
          #elif $current_kts < 64
            #set $current_beaufort = 11
            #set $word_current_beaufort = 'Violent storm'
          #else
            #set $current_beaufort = 12
            #set $word_current_beaufort = 'Hurricane'
          #end if
          #else
            #set $current_beaufort = 'N/A'
          #end if 
         

- Paul VE1DX

https://www.ve1dx.net/

[WindnFog]

 That should read "I use this code in my /etc/weewx/skins/Standard/index.html.tmpl file: