I would guess that one of the fields in your database that you think holds
a number, actually holds a string. It could be a string for value zero
('0'), instead of the actual value zero (0).

The error occurred on a line that is doing queries in the main archive
table (not the daily summaries) using columns 'windDir' or 'windGustDir'.

One more thing: what kind of database? Sqlite?



On Mon, Dec 23, 2024 at 10:55 AM Auchtermuchty Weather <[email protected]>
wrote:

> Sorry truncated the error report. I used cut to remove the stuff at the
> start of each line and put the output into a file, then used 'set number'
> in my text editor to make sure I pasted all the lines.,
>
>       1 Caught unrecoverable exception in generator
> 'weewx.imagegenerator.ImageGenerator'
>       2         ****  unsupported operand type(s) for -: 'float' and 'str'
>       3         ****  Traceback (most recent call last):
>       4         ****    File "/usr/share/weewx/weewx/xtypes.py", line 109,
> in get_series
>       5         ****      return xtype.get_series(obs_type, timespan,
> db_manager, aggregate_type,
>       6         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>       7         ****    File "/usr/share/weewx/weewx/xtypes.py", line
> 1040, in get_series
>       8         ****      return ArchiveTable.get_series(obs_type,
> timespan, db_manager, aggregate_type,
>       9         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      10         ****    File "/usr/share/weewx/weewx/xtypes.py", line 210,
> in get_series
>      11         ****      agg_vt = get_aggregate(obs_type, stamp,
> do_aggregate, db_manager,
>      12         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      13         ****    File "/usr/share/weewx/weewx/xtypes.py", line 136,
> in get_aggregate
>      14         ****      return xtype.get_aggregate(obs_type, timespan,
> aggregate_type, db_manager,
>      15         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      16         ****    File "/usr/share/weewx/weewx/xtypes.py", line
> 1168, in get_aggregate
>      17         ****      xsum += mag * math.cos(math.radians(90.0 -
> direction))
>      18         ****
>  ~~~~~^~~~~~~~~~~
>      19         ****  TypeError: unsupported operand type(s) for -:
> 'float' and 'str'
>      20         ****
>      21         ****  During handling of the above exception, another
> exception occurred:
>      22         ****
>      23         ****  Traceback (most recent call last):
>      24         ****    File "/usr/share/weewx/weewx/reportengine.py",
> line 248, in run
>      25         ****      obj.start()
>      26         ****    File "/usr/share/weewx/weewx/reportengine.py",
> line 465, in start
>      27         ****      self.run()
>      28         ****    File "/usr/share/weewx/weewx/imagegenerator.py",
> line 37, in run
>      29         ****      self.gen_images(self.gen_ts)
>      30         ****    File "/usr/share/weewx/weewx/imagegenerator.py",
> line 100, in gen_images
>      31         ****      plot = self.gen_plot(plotgen_ts,
>      32         ****             ^^^^^^^^^^^^^^^^^^^^^^^^^
>      33         ****    File "/usr/share/weewx/weewx/imagegenerator.py",
> line 236, in gen_plot
>      34         ****      start_vec_t, stop_vec_t, data_vec_t =
> weewx.xtypes.get_series(
>      35         ****
>  ^^^^^^^^^^^^^^^^^^^^^^^^
>      36         ****    File "/usr/share/weewx/weewx/xtypes.py", line 114,
> in get_series
>      37         ****      return xtype.get_series(obs_type, timespan,
> db_manager, aggregate_type,
>      38         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      39         ****    File "/usr/share/weewx/weewx/xtypes.py", line
> 1040, in get_series
>      40         ****      return ArchiveTable.get_series(obs_type,
> timespan, db_manager, aggregate_type,
>      41         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      42         ****    File "/usr/share/weewx/weewx/xtypes.py", line 210,
> in get_series
>      43         ****      agg_vt = get_aggregate(obs_type, stamp,
> do_aggregate, db_manager,
>      44         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      45         ****    File "/usr/share/weewx/weewx/xtypes.py", line 136,
> in get_aggregate
>      46         ****      return xtype.get_aggregate(obs_type, timespan,
> aggregate_type, db_manager,
>      47         ****
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>      48         ****    File "/usr/share/weewx/weewx/xtypes.py", line
> 1168, in get_aggregate
>      49         ****      xsum += mag * math.cos(math.radians(90.0 -
> direction))
>      50         ****
>  ~~~~~^~~~~~~~~~~
>      51         ****  TypeError: unsupported operand type(s) for -:
> 'float' and 'str'
>      52         ****  Generator terminated
>      53 rand type(s) for -: 'float' and 'str'
>      54 rand type(s) for -: 'float' and 'str'
>
> On Monday, 23 December 2024 at 18:53:18 UTC Auchtermuchty Weather wrote:
>
>> I was getting errors. Process of elimination showed it was the
>> monthwindvec image causing them, though not the day, week or year versions
>> of that images.
>>
>> I suspect data is at the bottom of this, but what data? Nothing odd in
>> archive.windGust or windGustDir.
>>
>> This is the latest WeeWx running on a Debian 12 virtual machine, and the
>> database has the extended schema.
>>
>> Turning on debugging didn't bring any extra information.
>>
>> Caught unrecoverable exception in generator
>> 'weewx.imagegenerator.ImageGenerator'
>>         ****  unsupported operand type(s) for -: 'float' and 'str'
>>         ****  Traceback (most recent call last):
>>         ****    File "/usr/share/weewx/weewx/xtypes.py", line 109, in
>> get_series
>>         ****      return xtype.get_series(obs_type, timespan, db_manager,
>> aggregate_type,
>>         ****
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>         ****    File "/usr/share/weewx/weewx/xtypes.py", line 1040, in
>> get_series
>>         ****      return ArchiveTable.get_series(obs_type, timespan,
>> db_manager, aggregate_type,
>>         ****
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>         ****    File "/usr/share/weewx/weewx/xtypes.py", line 210, in
>> get_series
>>         ****      agg_vt = get_aggregate(obs_type, stamp, do_aggregate,
>> db_manager,
>>         ****
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>         ****    File "/usr/share/weewx/weewx/xtypes.py", line 136, in
>> get_aggregate
>>         ****      return xtype.get_aggregate(obs_type, timespan,
>> aggregate_type, db_manager,
>>         ****
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>         ****    File "/usr/share/weewx/weewx/xtypes.py", line 1168, in
>> get_aggregate
>>         ****      xsum += mag * math.cos(math.radians(90.0 - direction))
>>         ****                                          ~~~~~^~~~~~~~~~~
>>         ****  TypeError: unsupported operand type(s) for -: 'float' and
>> 'str'
>>         ****
>>         ****  During handling of the above exception, another exception
>> occurred:
>>         ****
>>         ****  Traceback (most recent call last):
>>         ****    File "/usr/share/weewx/weewx/reportengine.py", line 248,
>> in run
>>         ****      obj.start()
>>         ****    File "/usr/share/weewx/weewx/reportengine.py", line 465,
>> in start
>>
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