Not an elegant solution but I just converted the feet to metres:
#set $tides = $forecast.xtides
#if len($tides) > 0
#for $tide in $tides
#set $height=$tide.offset.raw / 3.281
<tr>
<td>$tide.event_ts.format("%a %d %H:%M")</td>
<td>$tide.hilo</td>
<td>
#echo '%.2f' % $height
m</td>
</tr>
#end for
Produces:
Mon 22 19:21 L 0.66 m
Tue 23 01:40 H 1.91 m
Tue 23 07:52 L 0.49 m
Tue 23 14:12 H 1.72 m
Tue 23 19:56 L 0.76 m
Wed 24 02:16 H 1.84...
On Monday, May 22, 2023 at 1:21:50 PM UTC+1 Rory Gillies wrote:
> OK, I sussed it out by adding duration = 1209600 to the XTide section. I
> thought this was the default value as it is commented out in forecast.py
> but it needs to be there for it to work.
>
> Now I have the tides the heights are showing up in feet, not metres, any
> idea how to change this?
>
> Thanks,
>
> Rory
>
> On Monday, May 22, 2023 at 11:29:43 AM UTC+1 Rory Gillies wrote:
>
>> Hi,
>>
>> I am trying to add tides to my ephemeris page on my website but having
>> difficulty getting it to work. I'm not at the stage of adding he code to my
>> page template yet as I can't seem to get valid tide data. I am running
>> forecast version 3.4.0b12. I have the nonfree data installed and XTide is
>> working:
>>
>> weewx@weather:$ sudo tide -l "Lerwick"
>> Indexing /usr/share/xtide/harmonics-dwf-20100529-nonfree.tcd...
>> Indexing /usr/share/xtide/harmonics-initial.tcd...
>> Indexing /usr/share/xtide/harmonics-dwf-20191229-free.tcd...
>> Lerwick, Shetland Islands, Scotland - READ flaterco.com/pol.html
>> 60.1540° N, 1.1403° W
>>
>> 2023-05-22 1:32 PM BST 1.83 meters High Tide
>> 2023-05-22 7:21 PM BST 0.66 meters Low Tide
>> 2023-05-22 9:52 PM BST Sunset
>> 2023-05-23 1:40 AM BST 1.91 meters High Tide
>> 2023-05-23 2:17 AM BST Moonset
>> 2023-05-23 4:08 AM BST Sunrise
>> 2023-05-23 5:38 AM BST Moonrise
>> 2023-05-23 7:52 AM BST 0.49 meters Low Tide
>> 2023-05-23 2:12 PM BST 1.72 meters High Tide
>> 2023-05-23 7:56 PM BST 0.76 meters Low Tide
>> 2023-05-23 9:55 PM BST Sunset
>> 2023-05-24 2:16 AM BST 1.84 meters High Tide....>
>>
>> When WeeWX restarts I can see the XTide thread:
>>
>> May 22 08:56:52 weather weewx[1048507] INFO user.forecast: MainThread:
>> XTide: forecast version 3.4.0b12
>> May 22 08:56:52 weather weewx[1048507] INFO user.forecast: MainThread:
>> XTide: interval=1800 max_age=2419200 location='Lerwick, Shetland Islands,
>> Scotland' duration=3600
>>
>> But when it generates a report it reports no tidal events:
>>
>> May 22 09:35:18 weather weewx[1048507] INFO user.forecast: XTideThread:
>> XTide: generating tides from 2023-05-22 00:00:00 BST (1684710000) to
>> 2023-05-22 01:00:00 BST (1684713600)
>> May 22 09:35:18 weather weewx[1048507] INFO user.forecast: XTideThread:
>> XTide: got no tidal events
>>
>> For some reason it appears to be generating tides from the past, and
>> between midnight and 01:00, where is it getting this time range from?
>>
>> Here's the [Forecast] section in weewx.conf:
>>
>> [Forecast]
>> data_binding = forecast_binding
>> interval = 1800
>> [[XTide]]
>> location = "Lerwick, Shetland Islands, Scotland"
>> [[Zambretti]]
>> hemisphere = NORTH
>> [[Aeris]]
>> client_id = xxxxxxxxxxxxxxxxxxxxxx
>> client_secret = xxxxxxxxxxxxxxxxxx
>> [[WU]]
>> api_key = xxxxxxxxxxxxxxxxxxxxxxxx
>> [[UKMO]]
>> api_key = xxxxxxxxxxxxxxxxxxxxxxxx
>> location = 352262
>>
>> And here's the [Services] section:
>>
>> [[Services]]
>> archive_services = weewx.engine.StdArchive,
>> user.forecast.ZambrettiForecast, user.forecast.NWSForecast,
>> user.forecast.WUForecast, user.forecast.OWMForecast,
>> user.forecast.UKMOForecast, user.forecast.AerisForecast,
>> user.forecast.WWOForecast, user.forecast.DSForecast,
>> user.forecast.XTideForecast
>>
>> All other forecast threads are working correctly, just the XTide thread
>> with the issue. If I use the bundled tides.html it reports "Tide forecast
>> is not available."
>>
>> Any ideas?
>>
>
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