Yes, thanks for that. I do change the units for some reports, unfortunately 
kilopascal does not exist as a selectable unit which is the crux of the issue, 
so I was looking at different ways of adding that unit and possibly Humidex as 
an available value as well. 

I’m going to take a peak at the aqi extension to see if I can use it as an 
example for what I need to do.

Cheers
Chris
> On Aug 25, 2020, at 11:08 AM, John Kline <[email protected]> wrote:
> 
> You weren’t almost there as you were attempting to change the units stored in 
> the database.
> 
> Have a look at the following for changing your reports.  You don’t have to 
> change every report as you can set defaults for all reports.
> http://weewx.com/docs/customizing.htm#how_to_change_units 
> <http://weewx.com/docs/customizing.htm#how_to_change_units>
> 
>> On Aug 25, 2020, at 10:39 AM, Chris Alemany <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi all,
>> 
>> Yes, I noticed last night when I was rooting around in all the various weewx 
>> files (I guess I was creating a “fork” as I was modifying the weewx bin 
>> files themselves, _ini_.py, units.py etc to add in the new system) for 
>> mentions of units, that many extensions seemed to make the same 3-way 
>> assumption on units. So perhaps that method is not worth the effort.
>> 
>> I’m not interested in having the database itself use Canadian Units (though 
>> extending it for Humidex readings would be useful), only that I’d be able to 
>> set the units as simply and widely as I can across all skins and extensions 
>> as I have multiple going at once.  Thought I was almost there. :)
>> 
>> Cheers for the suggestions,
>> Chris
>> 
>>> On Aug 25, 2020, at 8:54 AM, John Kline <[email protected] 
>>> <mailto:[email protected]>> wrote:
>>> 
>>> Remember that just because something is stored in the database in units 
>>> that are not “Canadian”, that doesn’t mean you are stuck with that unit in 
>>> reports or graphs.
>>> 
>>> My two cents is that you should be spending your time getting the units you 
>>> want to see in the skin(s) you are using.
>>> 
>>>> On Aug 25, 2020, at 8:03 AM, David VE3STI <[email protected] 
>>>> <mailto:[email protected]>> wrote:
>>>> 
>>>> I'm not a programmer so I don't have helpful suggestions. But as a 
>>>> Canadian user, I hope that you figure this out. I use the "metric" option 
>>>> but think of wind speed in kph, not m/s, for example. I did get the 
>>>> Humidex added (a long time ago - I forget how I did it other than I know I 
>>>> didn't do the programming but found that someone else had already figured 
>>>> out and I just followed the instructions!)
>>>> 
>>>> Just as I type this, Tom's reply popped up.. Guess it won't be easy to add 
>>>> a new "Canadian option". The instructions for changing individual units is 
>>>> in the documentation but if you could make a "Canada-specific" set 
>>>> (cookbook style) that would be really useful for those of us who are 
>>>> users-but-not-programmers.
>>>> 
>>>> Keep us posted.
>>>> 
>>>> David
>>>> 
>>>> On Monday, August 24, 2020 at 11:37:18 p.m. UTC-4 [email protected] 
>>>> <http://gmail.com/> wrote:
>>>> Hi All,
>>>> 
>>>> I'm trying to extend weewx so that there is a 4th option for unit systems 
>>>> called "CANMETRICWX" (Canadian Metric).
>>>> 
>>>> This would be the same as "METRIC" except rain values are in mm and 
>>>> pressure values are in kPa and eventually would also include a "Humidex" 
>>>> calculation as well.
>>>> 
>>>> I thought I had added everything I needed throughout the file system for 
>>>> the addition of the units system but I'm running into the following 
>>>> complaint on startup:
>>>> "AttributeError: module 'weewx' has no attribute 'CANMETRICWX'"
>>>> 
>>>> Not being familiar enough with python, I am stumped as to where I can add 
>>>> that attribute. Any help greatly appreciated.
>>>> 
>>>> Cheers
>>>> 
>>>> Chris
>>>> 
>>>> 
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