I tried following:
anti_alias = 0
after systemctl restart weewx.service and wee_reports gives
File "/usr/share/weewx/weeplot/genplot.py", line 217, in render
image.thumbnail((self.image_width / self.anti_alias, self.image_height /
self.anti_alias), Image.ANTIALIAS)
ZeroDivisionError: division by zero
commenting line anti_alias or set it to any value except 0 (tried up to 6)
doesn't help.
*Next step*
I also backuped database + config files and purged weewx and python3
completly. After reinstall same issue appears.
*Last step, but successful*
I added debian oldstable to the apt sources and installed python-pil 4.0.0
instead of 5.4.1, and now diagrams are generated.
https://www.embedded-engineer.de/weewx/
How may I help you to find this bug which obviously doesn't concern anyone
else ?
Thanks
Stephan
Am Montag, 3. August 2020 22:27:07 UTC+2 schrieb Tom Keffer:
>
> Try turning off the anti-aliasing.
>
> On Mon, Aug 3, 2020 at 8:19 AM Stephan M. <[email protected] <javascript:>>
> wrote:
>
>> Hi Tom, thanks for reply.
>> The webpage showing the faulty diagrams is here.
>> <https://www.embedded-engineer.de/weewx/>
>>
>> This happens to every image generated. Also the old standard skin show
>> same behaviour.
>> But I tried Belchertown and there isn't such an issue.
>>
>> A reinstallation of weewx and all python3 packages didn't solve the
>> problem.
>>
>> A solution could be to use the Belchertown skin, but the machine running
>> weewx hasn't that much performance and a report takes a longer time and
>> maintenance is very slow.
>>
>>
>>
>> Am Sonntag, 2. August 2020 22:38:11 UTC+2 schrieb Tom Keffer:
>>>
>>> This is a new one for me.
>>>
>>> I agree that it's most likely an issue with pillow or, possibly, an
>>> underlying C library. Does it do this with every image, every time? Or,
>>> just an occasional image?
>>>
>>> Try uninstalling Pillow, then reinstall.
>>>
>>>
>>>
>>> On Sun, Aug 2, 2020 at 1:03 PM Stephan M. <[email protected]> wrote:
>>>
>>>> Hi, I am using a Oregon Scientific WMR88 (WMR100 driver) and the
>>>> Seasons skin which is properly running except that it is generating
>>>> corrupted diagram images.
>>>> Trying to open the images (i.e. daybarometer.png) directly with an
>>>> image viewer shows an error 'bad adaptive filter value'.
>>>> With gimp I am able to open it:
>>>>
>>>> [image: daybarometer.jpg]
>>>>
>>>> The issue appears after updating debian from stretch -> buster and from
>>>> weewx 3.9 to 4.1.1. Maybe an issue with the also updated python-pillow
>>>> package.
>>>> Logging shows nothing unusual.
>>>>
>>>>
>>>> *System*
>>>> debian buster on armel (all installed via .deb package, no pip3
>>>> installed)
>>>> weewx 4.1.1
>>>> python 3.7.3
>>>> python3-pil 5.4.1
>>>>
>>>> *journalctl -xe* with debug=2
>>>> Aug 02 21:48:00 weewx python3[2497]: wee_reports[2497] DEBUG weewx.
>>>> manager: Daily summary version is 2.0
>>>> Aug 02 21:48:16 weewx python3[2497]: wee_reports[2497] INFO weewx.
>>>> cheetahgenerator: Generated 8 files for report SeasonsReport in 16.10
>>>> seconds
>>>> Aug 02 21:48:17 weewx python3[2497]: wee_reports[2497] DEBUG weewx.
>>>> manager: Daily summary version is 2.0
>>>> Aug 02 21:48:22 weewx python3[2497]: wee_reports[2497] INFO weewx.
>>>> imagegenerator: Generated 15 images for report SeasonsReport in 5.50
>>>> seconds
>>>> Aug 02 21:48:22 weewx python3[2497]: wee_reports[2497] INFO weewx.
>>>> reportengine: Copied 5 files to /var/www/html/weewx
>>>> Aug 02 21:48:22 weewx python3[2497]: wee_reports[2497] DEBUG weewx.
>>>> reportengine: Running report 'SmartphoneReport'
>>>> Aug 02 21:48:23 weewx python3[2497]: wee_reports[2497] DEBUG weewx.
>>>> reportengine: Found configuration file /etc/weewx/skins/Smartphone/skin
>>>> .conf for report 'SmartphoneReport'
>>>> Aug 02 21:48:23 weewx python3[2497]: wee_reports[2497] DEBUG weewx.
>>>> cheetahgenerator: Using search list ['weewx.cheetahgenerator.Almanac',
>>>> 'weewx.cheetahgenerator.Station', 'weewx.cheetahgenerator.Cu
>>>> Aug 02 21:48:23 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.manager: Daily summary version is 2.0
>>>> Aug 02 21:48:23 weewx python3[2492]: weewx[2492] DEBUG
>>>> weewx.drivers.wmr100: Bad USB report received: [Errno 110] Operation timed
>>>> out
>>>> Aug 02 21:48:24 weewx python3[2497]: wee_reports[2497] INFO
>>>> weewx.cheetahgenerator: Generated 6 files for report SmartphoneReport in
>>>> 1.25 seconds
>>>> Aug 02 21:48:24 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.manager: Daily summary version is 2.0
>>>> Aug 02 21:48:25 weewx python3[2497]: wee_reports[2497] INFO
>>>> weewx.imagegenerator: Generated 6 images for report SmartphoneReport in
>>>> 1.42 seconds
>>>> Aug 02 21:48:25 weewx python3[2497]: wee_reports[2497] INFO
>>>> weewx.reportengine: Copied 6 files to /var/www/html/weewx/smartphone
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.reportengine: Report 'MobileReport' not enabled. Skipping.
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.reportengine: Report 'StandardReport' not enabled. Skipping.
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.reportengine: Report 'FTP' not enabled. Skipping.
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.reportengine: Running report 'RSYNC'
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weewx.reportengine: Found configuration file
>>>> /etc/weewx/skins/Rsync/skin.conf for report 'RSYNC'
>>>> Aug 02 21:48:26 weewx python3[2497]: wee_reports[2497] DEBUG
>>>> weeutil.rsyncupload: rsyncupload: cmd: [['rsync', '--archive', '--stats',
>>>> '-e ssh -p 221', '/var/www/html/weewx/', 'embedded-engineer.de@
>>>> Aug 02 21:48:27 weewx python3[2497]: wee_reports[2497] INFO weeutil.
>>>> rsyncupload: rsync'd 46 files (431,862 bytes) in 1.15 seconds
>>>> Aug 02 21:48:57 weewx python3[2492]: weewx[2492] DEBUG
>>>> weewx.drivers.wmr100: Bad USB report received: [Errno 110] Operation timed
>>>> out
>>>> Aug 02 21:49:19 weewx python3[2492]: weewx[2492] DEBUG
>>>> weewx.drivers.wmr100: Bad USB report received: [Errno 110] Operation timed
>>>> out
>>>>
>>>>
>>>> *weewx.conf*
>>>> [[SeasonsReport]]
>>>> # The SeasonsReport uses the 'Seasons' skin, which contains the
>>>> # images, templates and plots for the report.
>>>> skin = Seasons
>>>> enable = true
>>>> HTML_ROOT = /var/www/html/weewx
>>>>
>>>>
>>>> *skins/Seasons/skin.conf is attached*
>>>>
>>>> Any help is appreciated
>>>> Thanks
>>>> Stephan
>>>>
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>>>>
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