Some variables are not calculated automatically in version 4.0.0b18

[Lucas Heijst]

Tom,

In version 4.0.0b18 the follwing settings are commented out in wxservices:

    [[Calculations]]

        # Order matters! Type 'pressure' must come before 'altimeter' and 'barometer'

        # pressure = prefer_hardware

        # altimeter = prefer_hardware

        # appTemp = prefer_hardware

        # barometer = prefer_hardware

        # beaufort = prefer_hardware        

        # cloudbase = prefer_hardware

        # dewpoint = prefer_hardware

        # ET = prefer_hardware

        # heatindex = prefer_hardware

        # humidex = prefer_hardware

        # inDewpoint = prefer_hardware

        # maxSolarRad = prefer_hardware

        # rainRate = prefer_hardware

        # windchill = prefer_hardware

        # windrun = prefer_hardware

While they were not commented out in version 4.0.0.b14 and earlier.

As a result the values of cloudbase, maxSolarRad, appTemp, humidex (and others) are nor calculated automatically anymore in version 4.0.0b18

I had to add them explicitely in the [Calculations] section of weewx.conf.

What is the reason of this change?

Luc

[Thomas Keffer]

Not sure what you are referring to. If you look at the current version of weewx.conf, as well as the version in the weewx-4.0.0b18.tar.gz tarball, the options are not commented out.

-tk

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[Lucas Heijst]

See the differences of both versions of wxservices in the attachment.

As an example how it used to work in version 4.0.0b14 and earlier:

To have the value of 'cloudbase' calculated automatically, you had to add the field 'cloudbase' to the database.

No other actions were needed. 

Since the change in wxservices.py (4.0.0b17 and later) you have to add the line:

        cloudbase = prefer_hardware

yourself to the [[Calculations]] section of weewx.conf

Luc

On Sunday, 12 April 2020 11:39:52 UTC-3, Tom Keffer wrote:

Not sure what you are referring to. If you look at the current version of weewx.conf, as well as the version in the weewx-4.0.0b18.tar.gz tarball, the options are not commented out.

-tk

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[Thomas Keffer]

Luc, download the file weewx-4.0.0b18.tar.gz from the weewx downloads directory. The entries are not commented out. I don't know where you got your copy.

I'll check into cloudbase.

-tk

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[Lucas Heijst]

Sorry Tom,

I was wrong. The change happened between version 4.0.0a4 and 4.0.0b13 (the versions in between I didn't download)

Version 4.0.0a4 had in wxservices a section _dispatch_list which 'did the trick' of the automatic calculations, see below.

So my question is: why is this feature removed?

Luc

Part of wxservices 4.0.0.a4

==================================================

    # these are the quantities that this service knows how to calculate

    _dispatch_list = [

        'pressure', # pressure must be before altimeter

        'barometer',

        'altimeter',

        'windchill',

        'heatindex',

        'dewpoint',

        'inDewpoint',

        'rainRate',

        'maxSolarRad',

        'cloudbase',

        'humidex',

        'appTemp',

#        'beaufort',

        'ET',

        'windrun',

        ]

==================================================

 
On Sunday, 12 April 2020 12:00:03 UTC-3, Tom Keffer wrote:

Luc, download the file weewx-4.0.0b18.tar.gz from the weewx downloads directory. The entries are not commented out. I don't know where you got your copy.

I'll check into cloudbase.

-tk

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[Thomas Keffer]

It  was removed because not all weewx installations deal with weather. It makes no sense to try and calculate 'barometer' in an installation that monitors energy use.

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[Lucas Heijst]

Tom,

OK, clear. I’m fine with that.

Could you please make a note in the changes document that this feature has gone and that one manually must add the corresponding lines to the weewx.conf file?

Now, unfortunately, I miss 14 days of values for humidex, appTemp, cloudbase, windrun and maxSolarRad.

Luc

On Sunday, 12 April 2020 13:40:40 UTC-3, Tom Keffer wrote:

It  was removed because not all weewx installations deal with weather. It makes no sense to try and calculate 'barometer' in an installation that monitors energy use.

To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-development/d6d09b35-ec7d-44f0-9afe-5c77a9ec4a07%40googlegroups.com.

[Thomas Keffer]

Take a look: it's in not only changes.txt, but also the Upgrading Guide.

Luc, let me remind you: this is beta software. Don't use it if you're worried about data loss.

-tk

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[Lucas Heijst]

Tom,

You are right (as always :-) ).

Well, now I can use option  --calc-missing of wee_database!

Thanks for your time!

Luc

On Sunday, 12 April 2020 14:43:35 UTC-3, Tom Keffer wrote:

Take a look: it's in not only changes.txt, but also the Upgrading Guide.

Luc, let me remind you: this is beta software. Don't use it if you're worried about data loss.

-tk

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