visualize past and zoomed weather data out of db

[kede...@gmail.com]

Hello,

perhaps there is already a solution here for my problem but searching with keywords doesn't give me any results.

Using WeeWX since several years I am able to have diagrams of the last day(s), last week, last month and the last year.

But if I want to look at a special date in past for specified period of time I have no tool to zooming those data out of my local database and visualize them.

For example in January the vulcano Hunga-Tonga-Hunga-Ha'apai had an eruption that sends a pressure wave around the world witch was detected by all weatherstations. But I have no chance to focuse on that event.

Storing weatherdata for several years in a database on a SD-Card may not be necessary if I am not flexibel in data requests.

Any idea?

Kind regards

Klaus

[Tom Keffer]

The only thing WeeWX offers is the ability to generate a report for any timestamp. So, for example,

wee_reports /etc/weewx/weewx.conf 1642327200

gives a pretty good rendition for my location. You may have to experiment with different timestamps.

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[kede...@gmail.com]

Thank you, Tom!

[morr...@gmail.com]

Also, we had a flurry of activity discussing this in the week after the event. I started and had help from the community in developing a script specific to the eruption.

https://groups.google.com/g/weewx-user/c/kw6i-VZibc4/m/HB4K5dNmBwAJ

Script is here: https://github.com/morrowwm/weewx_tonga_browse

P.S. Tom at al, please let me know if this sort of response is inappropriate here.

[f4n...@gmail.com]

Are there also yearly graph reports from past years possible or just daily?

[Karen K]

That command line, Tom gave, creates all the other plots, too.

[f4n...@gmail.com]

Now i get it, thanks

[f4n...@gmail.com]

Since i used it, i get following error even when i restart weewx:

Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] INFO weewx.reportengine: Copied 0 files to /var/www/html/weewx_sdr
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine: Caught unrecoverable exception in generator 'weewx.reportengine.FtpGenerator'
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****  unsupported pickle protocol: 3
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****  Traceback (most recent call last):
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****    File "/usr/share/weewx/weewx/reportengine.py", line 197, in run
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****      obj.start()
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****    File "/usr/share/weewx/weewx/reportengine.py", line 378, in start
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****      self.run()
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****    File "/usr/share/weewx/weewx/reportengine.py", line 429, in run
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****      n = ftp_data.run()
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****    File "/usr/share/weewx/weeutil/ftpupload.py", line 100, in run
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****      timestamp, fileset, hashdict = self.get_last_upload()
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****    File "/usr/share/weewx/weeutil/ftpupload.py", line 241, in get_last_upload
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****      timestamp = cPickle.load(f)
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****  ValueError: unsupported pickle protocol: 3
Mar  1 12:11:37 raspi-wsdi1b weewx-weewx-sdr[8548] ERROR weewx.reportengine:         ****  Generator terminated

And the files on the FTP are getting no longer refreshed, only if i let run wee_report manually. What happened?

[Tom Keffer]

NB: the program wee_reports will run all reports in weewx.conf, including FTP. That means the files it generates will get uploaded. That may not be what you want.

In any case, the file #FTP.last holds information about the last upload of each file. This is used to minimize the amount of FTP traffic.

I'm just guessing, but it's possible that you're using a different version of Python for weewxd than wee_report. The Python 2 protocol may be incompatible with the Python 3 protocol.

Try deleting the file. You'll find it in /var/www/html. It will be regenerated again. And, make sure you're using the same version of Python for both programs.

-tk

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[f4n...@gmail.com]

That was it (the #FTP.last), thanks a lot for your fast help!

How can I tell it to use a certain python version? Just in case if that would be the case

[Tom Keffer]

I usually specify the python version explicitly, rather than rely on the "hash bang" in the application's file.

python3 /usr/share/weewxd

rather than

/usr/share/weewxd

or

weewxd

That way, you know exactly what you're getting.

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[f4n...@gmail.com]

can this be done separately for multiple weewx instances? so, could i start one instance with python3 and the other with python2? Would I have to add the conf path?

[Tom Keffer]

WeeWX can use either version of Python. You just have to make sure the requisite dependencies are installed for both.

To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/e2752e92-26e5-40ec-9e5d-1a40053e67c8n%40googlegroups.com.