Acumulated rain since a date.

[Manuel]

Good afternoon. How can I get the accumulated rain from a date . Example from September until now. Thank you.

[Tom Keffer]

If you know the unix epoch time, it's easy enough. For example, for all the rain since 1-Jan-2021 0000 UTC:

<p>Rain since the start of the year UTC: $current(current_time=1609459200).rain.sum</p>

On Sat, Apr 24, 2021 at 9:54 AM Manuel <nofu...@gmail.com> wrote:

Good afternoon. How can I get the accumulated rain from a date . Example from September until now. Thank you.

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[Manuel]

Hi Tom I have put that in the index.html.tmpl and it gives me the following error:

Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: Generate failed with exception '<type' exceptions.TypeError '>'

Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: **** Ignoring template /etc/weewx/skins/Standard/index.html.tmpl

Apr 24 21:51:13 raspberrypi weewx [9579]: cheetahgenerator: **** Reason: current () got an unexpected keyword argument 'current_time'

Apr 24 21:51:13 raspberrypi weewx [9579]: **** Traceback (most recent call last):

Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "/usr/share/weewx/weewx/cheetahgenerator.py", line 332, in generate

Apr 24 21:51:13 raspberrypi weewx [9579]: **** fd.write (str (compiled_template))

Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "/usr/lib/python2.7/dist-packages/Cheetah/Template.py", line 1005, in __str__ Apr 24 21:51:13 raspberrypi weewx [9579]: **** rc = getattr (self, mainMethName) ()

Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "cheetah__etc_weewx_skins_Standard_index_html_tmpl_1619293873_73_36940.py", line 825, in respond

Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "cheetah__etc_weewx_skins_Standard_index_html_tmpl_1619293873_73_36940.py", line 98, in __errorCatcher5

Apr 24 21:51:13 raspberrypi weewx [9579]: **** File "<string>", line 1, in <module> 

I don't know what I'm doing wrong.

Thanks for your quick response.

[Tom Keffer]

Geez, my apologies. I don't know what I was thinking.

Unfortunately, no, it is not possible to sum from an arbitrary time. It's a reasonable thing to do, but at the moment, weewx does not support it. You would have to write a search list extension to do it.

To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/e65cade1-28b2-4493-9b87-f4131332f456n%40googlegroups.com.

[Manuel]

Thank you very much Tom. My knowledge doesn't go that far. I do it manually by adding the rainfall of the months since September, which is the beginning of the hydrological year.

[Tom Keffer]

Oh. In that case, you can use $rainyear. That's what it's for:

$rainyear.rain.sum

Just be sure to set option rain_year_start to whatever month your rain year starts.

BTW, many of the skins come with this already included.

To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/fbfac242-b383-4c91-8339-d9ba2b61ed90n%40googlegroups.com.

[p q]

You can set the rain year, which might have been what you were looking for anyway. 

In weewx.conf

rain_year_start = 9 

(for sept)

On Sat, Apr 24, 2021 at 1:43 PM Manuel <nofu...@gmail.com> wrote:

To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/fbfac242-b383-4c91-8339-d9ba2b61ed90n%40googlegroups.com.

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Peter Quinn
(415)794-2264

[Manuel]

No. I only need to know the rain since September but not at all weewx. Thanks.

[Manuel]

Solved. I have changed rain_year_start = 9 in weewx.config because there are two different variables: "$ rainyear.rain.sum" which is the rain since September and "$ year.rain.sum" the rain since January 1st. That's what I wanted. Thank you.