Problem deleting old data

[Jon B]

I've got a new Davis Vantage Pro2 which I've got setup with weewx, using the Belchertown skin. While I was testing it, I had the station indoors and so I've got some data from that period. I've installed the station outdoors now so want to delete the old data, but I can't seem to get rid of it!

I've tried stopping weewx, then deleting the database file in /var/lib/weewx/, as well as all the files in /var/www/html/weewx and the equivalent ones on the webserver, then clearing the data on the console (which appears to work correctly, as it says "clearing now"), before restarting weewx - but the old data keeps reappearing! Is the old data also stored somewhere else? I can't understand where it's coming from!

[vince]

On Friday, March 12, 2021 at 8:26:29 AM UTC-8 jonbe...@gmail.com wrote:

I've got a new Davis Vantage Pro2 which I've got setup with weewx, using the Belchertown skin. While I was testing it, I had the station indoors and so I've got some data from that period. I've installed the station outdoors now so want to delete the old data, but I can't seem to get rid of it!

Hard to say without any logs in your post, but my guess is you see old data from your datalogger.

You might want to just wait a couple weeks til the logger has only outside data in it, then stop weewx and clean up any data before a particular date+time.  There are lots of docs online for how to do that.

 

[Jon B]

Sorry, forgot to add the logs! Here's one example (there are lots of entries like this)

INFO weewx.manager: Added record 2020-11-26 08:30:00 GMT (1606379400) to database 'weewx.sdb'
INFO weewx.manager: Added record 2020-11-26 08:30:00 GMT (1606379400) to daily summary in 'weewx.sdb'

Seems as though it is picking up old data from the logger as you suggest, which is strange as I've tried clearing it a few times so presumably it isn't deleting properly when I do that. I've barely had it turned on since December, hence why the dates are a few months ago

I'll do as you suggest and try clearing it out in a couple of weeks, unless anyone can suggest a reason that it's not clearing properly

[Tom Keffer]

The records are definitely coming from the logger. Try clearing the logger again, except this time

1. Make sure weewxd is stopped.
2. Make sure you have the necessary privileges. You may have to use 'sudo' before wee_device.
3. Use "wee_device --clear-memory".
4. If you get no satisfaction, post the logs from the invocation of wee_device through its termination.

-tk

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[Jon B]

I think I've just tried what you suggested, but it's still picking up the old data. Just to confirm, I've:

1) Stopped weewx

2) sudo wee_device --clear-memory

3) Then started weewx again and refreshed

Do I also need to clear the data at the console and delete the existing database file at the same time?

Here are the logs of the memory clear:

systemd[1]: Stopped LSB: weewx weather system.
wee_device[500270] DEBUG weewx.drivers.vantage: Driver version is 3.2.1
wee_device[500270] DEBUG weewx.drivers.vantage: Option loop_request=1
wee_device[500270] DEBUG weewx.drivers.vantage: Opened up serial port /dev/ttyUSB0; baud 19200; timeout 4.00
wee_device[500270] DEBUG weewx.drivers.vantage: Gentle wake up of console successful
wee_device[500270] DEBUG weewx.drivers.vantage: Hardware type is 16
wee_device[500270] DEBUG weewx.drivers.vantage: ISS ID is 1
wee_device[500270] DEBUG weewx.drivers.vantage: Hardware name: Vantage Pro2
wee_device[500270] DEBUG weewx.drivers.vantage: Gentle wake up of console successful
wee_device[500270] INFO weewx.drivers.vantage: Archive memory cleared.

[Tom Keffer]

Yes. The data in the database is what is used for the reports. 

Any unwanted "old" data needs to be purged from the logger and from the database.

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[Jon B]

Thanks, that's done the trick! The old data is no more.