I extended the file by trend values. Look at the new file attached, please.
[email protected] schrieb am Donnerstag, 28. Januar 2021 um 23:45:17 UTC+1:
> Thanks, that is exactly what I was looking for. I know it is too late for
> you, but I thought other people might need to add units, unit groups, and
> observations. So, I was looking for a real world example. I’ve opened issue
> 118 <https://github.com/bellrichm/WeeWX-MQTTSubscribe/issues/118> to work
> on this in MQTTSubscribe.
>
> On Thursday, 28 January 2021 at 15:03:22 UTC-5 [email protected] wrote:
>
>> I am not sure that I understood what I am expected to post. The units and
>> unit group definition file I created is this:
>>
>> [email protected] schrieb am Montag, 25. Januar 2021 um 01:09:55 UTC+1:
>>
>>> Karen,
>>> If you pst what you have done, I’d be willing to look at updating
>>> MQTTSubscribe to have a configuration option. If we get something working,
>>> perhaps a pull request to WeeWX might result.
>>> rich
>>>
>>> On Sunday, 24 January 2021 at 05:57:47 UTC-5 [email protected] wrote:
>>>
>>>> @Rich: Yes, I was afraid that that is the only way to do it. So I
>>>> guess, I will do it the same way
>>>>
>>>> @Weatherl: Oh, I did not install devices of my own. Instead I got
>>>> permission to read the readings of the official level and flow meters from
>>>> the government. They provide an API in the Internet here. If you register
>>>> with them you can get the data live.
>>>>
>>>> [email protected] schrieb am Samstag, 23. Januar 2021 um 22:48:32
>>>> UTC+1:
>>>>
>>>>> I'll be interested in hearing if there is a better way, but here is
>>>>> what I did to add a new observation.
>>>>> 1. Wrote this service.
>>>>>
>>>>> import weewx
>>>>>
>>>>> import weewx.units
>>>>> weewx.units.obs_group_dict['honeywell01'] = 'group_temperature'
>>>>> weewx.units.obs_group_dict['honeywell02'] = 'group_temperature'
>>>>> weewx.units.obs_group_dict['honeywell03'] = 'group_temperature'
>>>>>
>>>>> class Noop(weewx.engine.StdService):
>>>>> pass
>>>>>
>>>>> 2. Updated weewx.conf
>>>>> prep_services = weewx.engine.StdTimeSynch ,
>>>>> user.bellrichm.Noop
>>>>>
>>>>> rich
>>>>>
>>>>> On Saturday, 23 January 2021 at 16:18:28 UTC-5 [email protected]
>>>>> wrote:
>>>>>
>>>>>> I installed MQTTSubscribe service. In this case it provides data
>>>>>> about water level (unit cm) and water flow (unit cubic meter per second)
>>>>>> of
>>>>>> the near river.
>>>>>>
>>>>>> As those units and unit group are not included in the standard weewx
>>>>>> I have to assign them elsewhere.
>>>>>>
>>>>>> Because I use the MQTTSubscribe service, there is no need to write an
>>>>>> extension. On the other hand, no extension file means no place to put
>>>>>> the
>>>>>> assignment of the additional units and unit groups.
>>>>>>
>>>>>> Could I declare those units and unit groups somewhere in weewx.conf?
>>>>>>
>>>>>> Is there any other possibility?
>>>>>>
>>>>>
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# water level and water flow units and unit groups
# Copyright (c) 2021 Johanna Roedenbeck
"""
value US METRIC & METRICWX
-------------------------------------------------------
water level W ft cm
water level trend ft/h cm/h
water flow Q ft^3/s m^3/s
water flow trend ft^3/s/h m^3/s/h
"""
import weewx.units
import weeutil.weeutil
# add groups for water level and water flow
weewx.units.USUnits.extend(
{'group_flow':'ft3ps', # cubic foot per second
'group_flow_trend':'ft3psph',
'group_level':'foot',
'group_level_trend':'ftph'})
# add groups for water level and water flow
weewx.units.MetricUnits.extend(
{'group_flow':'m3ps', # cubic meter per second
'group_flow_trend':'m3psph',
'group_level':'cm',
'group_level_trend':'cmph'})
# add groups for water level and water flow
weewx.units.MetricWXUnits.extend(
{'group_flow':'m3ps', # cubic meter per second
'group_flow_trend':'m3psph',
'group_level':'cm',
'group_level_trend':'cmph'})
# default format for flow units
weewx.units.default_unit_format_dict['cmph']='%.2f'
weewx.units.default_unit_format_dict['m3ps']='%.1f'
weewx.units.default_unit_format_dict['m3psph']='%.2f'
weewx.units.default_unit_format_dict['ft3ps']='%.0f'
# default unit label for flow units
weewx.units.default_unit_label_dict['cmph']=u" cm/h"
weewx.units.default_unit_label_dict['m3ps']=u" m³/s"
weewx.units.default_unit_label_dict['m3psph']=u" m³/s/h"
weewx.units.default_unit_label_dict['ft3ps']=u" ft³/s"
# Note: default format and unit labels for water level units are
# already defined within weewx.units. No need to do it here.
# add conversion functions between cm and foot for water level
weewx.units.conversionDict['cm']['foot']= lambda x : x / 30.48
weewx.units.conversionDict['foot']['cm']= lambda x : x * 30.48
# add conversion functions between cm/h and ft/h for water level trend
if 'cmph' not in weewx.units.conversionDict:
weewx.units.conversionDict['cmph']={'ftph': lambda x : x / 30.48 }
else:
weewx.units.conversionDict['cmph']['ftph']= lambda x : x / 30.48
if 'ftph' not in weewx.units.conversionDict:
weewx.units.conversionDict['ftph']={'cmph': lambda x : x * 30.48 }
else:
weewx.units.conversionDict['ftph']['cmph']= lambda x : x * 30.48
# add conversion functions for flow units
if 'm3ps' not in weewx.units.conversionDict:
weewx.units.conversionDict['m3ps']={'ft3ps': lambda x : x * 35.3147 }
else:
weewx.units.conversionDict['m3ps']['ft3ps']= lambda x : x * 35.3147
if 'ft3ps' not in weewx.units.conversionDict:
weewx.units.conversionDict['ft3ps']={'m3ps': lambda x : x / 35.3147 }
else:
weewx.units.conversionDict['ft3ps']['m3ps']= lambda x : x / 35.3147
# add conversion functions for flow trend units
if 'm3psph' not in weewx.units.conversionDict:
weewx.units.conversionDict['m3psph']={'ft3psph': lambda x : x * 35.3147 }
else:
weewx.units.conversionDict['m3psph']['ft3psph']= lambda x : x * 35.3147
if 'ft3psph' not in weewx.units.conversionDict:
weewx.units.conversionDict['ft3psph']={'m3psph': lambda x : x / 35.3147 }
else:
weewx.units.conversionDict['ft3psph']['m3psph']= lambda x : x / 35.3147
# water level and flow measurements
weewx.units.obs_group_dict.extend(
{'Q566055v':'group_flow',
'Q566055t':'group_flow_trend',
'W566055v':'group_level',
'W566055t':'group_level_trend',
'W566055a':'group_count',
'Q567470v':'group_flow',
'Q567470t':'group_flow_trend',
'W567470v':'group_level',
'W567470t':'group_level_trend',
'W567470a':'group_count'})
class Noop(weewx.engine.StdService):
pass
