Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Thomas Keffer]

Assuming you are using hardware generation, this may stem from a
misunderstanding of what you're seeing.

The Vantage logger emits ET only once an hour, on the hour. It is the total
ET for the hour.

So, most of the time $current.ET will display zero, but at the top of the
hour, it will show the ET for the previous hour.

You can see this by taking a direct look in the database.

-tk

On Wed, Oct 18, 2017 at 2:35 PM, Joe  wrote:

> High UV
> Low UV 8.3 at 10-03-2017 13:36
> 0.0 at 10-01-2017 00:00
> High ET
> Low ET 0.02 in at 10-01-2017 14:00
> 0.00 in at 10-01-2017 00:05
> High Radiation
> Low Radiation 1060 W/m² at 10-04-2017 13:41
> 0 W/m² at 10-01-2017 00:00
>
> This is the MONTHLY totals.  And it always shows .02 for ET for the High
> ET
>
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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Joe]

I didn't change the default settings for ET..  i will look at data and try to 
see.

The reason I think something is wrong is because its always the same even after 
it rains.  

But on the console its being displayed.

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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Thomas Keffer]

Are you using hardware record generation? Or, software? Look in weewx.conf
in the [StdArchive] section, option record_generation.

-tk

On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:

> I didn't change the default settings for ET..  i will look at data and try
> to see.
>
> The reason I think something is wrong is because its always the same even
> after it rains.
>
> But on the console its being displayed.
>
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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Joe]

StdArchive field i record_generation is  HARDWARE







On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:
>
> Are you using hardware record generation? Or, software? Look in weewx.conf 
> in the [StdArchive] section, option record_generation.
>
> -tk
>
> On Sat, Nov 4, 2017 at 7:30 PM, Joe > 
> wrote:
>
>> I didn't change the default settings for ET..  i will look at data and 
>> try to see.
>>
>> The reason I think something is wrong is because its always the same even 
>> after it rains.
>>
>> But on the console its being displayed.
>>
>> --
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>>
>
>

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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Thomas Keffer]

If record generation is hardware, then weewx is just reporting what was
calculated by the Vantage console.

The algorithm they use is rather complicated and is described here

(see
page 28-15). The main variables they depend on are actual and saturation
water pressures, which are functions of humidity. So, rainfall is not taken
into account, except in so far as it might affect relative humidity.

-tk

On Wed, Nov 8, 2017 at 5:01 AM, Joe  wrote:

> StdArchive field i record_generation is  HARDWARE
>
>
>
>
>
>
>
> On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:
>>
>> Are you using hardware record generation? Or, software? Look in
>> weewx.conf in the [StdArchive] section, option record_generation.
>>
>> -tk
>>
>> On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:
>>
>>> I didn't change the default settings for ET..  i will look at data and
>>> try to see.
>>>
>>> The reason I think something is wrong is because its always the same
>>> even after it rains.
>>>
>>> But on the console its being displayed.
>>>
>>> --
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>>> Groups "weewx-user" group.
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>>>
>>
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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Joe]

Ok So I was assuming it would always show a field here at any given point 
like what it does on the Vanage Console.


Is there not a 'graph' that can be displayed along with the rest of them in 
the HTML ?



On Wednesday, November 8, 2017 at 7:51:37 AM UTC-6, Tom Keffer wrote:
>
> If record generation is hardware, then weewx is just reporting what was 
> calculated by the Vantage console.
>
> The algorithm they use is rather complicated and is described here 
> 
>  (see 
> page 28-15). The main variables they depend on are actual and saturation 
> water pressures, which are functions of humidity. So, rainfall is not taken 
> into account, except in so far as it might affect relative humidity.
>
> -tk
>
> On Wed, Nov 8, 2017 at 5:01 AM, Joe > 
> wrote:
>
>> StdArchive field i record_generation is  HARDWARE
>>
>>
>>
>>
>>
>>
>>
>> On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:
>>>
>>> Are you using hardware record generation? Or, software? Look in 
>>> weewx.conf in the [StdArchive] section, option record_generation.
>>>
>>> -tk
>>>
>>> On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:
>>>
 I didn't change the default settings for ET..  i will look at data and 
 try to see.

 The reason I think something is wrong is because its always the same 
 even after it rains.

 But on the console its being displayed.

 --
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>>>
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>
>

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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Thomas Keffer]

Sure, there is no reason you can't plot ET. You just need to make sure you
have an aggregation period of at least an hour.

-tk

Fat-fingered from my Android

On Nov 8, 2017 9:34 AM, "Joe"  wrote:

Ok So I was assuming it would always show a field here at any given point
like what it does on the Vanage Console.


Is there not a 'graph' that can be displayed along with the rest of them in
the HTML ?



On Wednesday, November 8, 2017 at 7:51:37 AM UTC-6, Tom Keffer wrote:

> If record generation is hardware, then weewx is just reporting what was
> calculated by the Vantage console.
>
> The algorithm they use is rather complicated and is described here
> 
>  (see
> page 28-15). The main variables they depend on are actual and saturation
> water pressures, which are functions of humidity. So, rainfall is not taken
> into account, except in so far as it might affect relative humidity.
>
> -tk
>
> On Wed, Nov 8, 2017 at 5:01 AM, Joe  wrote:
>
>> StdArchive field i record_generation is  HARDWARE
>>
>>
>>
>>
>>
>>
>>
>> On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:
>>>
>>> Are you using hardware record generation? Or, software? Look in
>>> weewx.conf in the [StdArchive] section, option record_generation.
>>>
>>> -tk
>>>
>>> On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:
>>>
 I didn't change the default settings for ET..  i will look at data and
 try to see.

 The reason I think something is wrong is because its always the same
 even after it rains.

 But on the console its being displayed.

 --
 You received this message because you are subscribed to the Google
 Groups "weewx-user" group.
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>>>
>>> --
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>>
>
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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Joe]

Ok I will look for the string to add to the conf file.




On Wednesday, November 8, 2017 at 12:30:25 PM UTC-6, Tom Keffer wrote:
>
> Sure, there is no reason you can't plot ET. You just need to make sure you 
> have an aggregation period of at least an hour. 
>
> -tk
>
> Fat-fingered from my Android
>
> On Nov 8, 2017 9:34 AM, "Joe" > 
> wrote:
>
> Ok So I was assuming it would always show a field here at any given point 
> like what it does on the Vanage Console.
>
>
> Is there not a 'graph' that can be displayed along with the rest of them 
> in the HTML ?
>
>
>
> On Wednesday, November 8, 2017 at 7:51:37 AM UTC-6, Tom Keffer wrote:
>
>> If record generation is hardware, then weewx is just reporting what was 
>> calculated by the Vantage console.
>>
>> The algorithm they use is rather complicated and is described here 
>> 
>>  (see 
>> page 28-15). The main variables they depend on are actual and saturation 
>> water pressures, which are functions of humidity. So, rainfall is not taken 
>> into account, except in so far as it might affect relative humidity.
>>
>> -tk
>>
>> On Wed, Nov 8, 2017 at 5:01 AM, Joe  wrote:
>>
>>> StdArchive field i record_generation is  HARDWARE
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:

 Are you using hardware record generation? Or, software? Look in 
 weewx.conf in the [StdArchive] section, option record_generation.

 -tk

 On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:

> I didn't change the default settings for ET..  i will look at data and 
> try to see.
>
> The reason I think something is wrong is because its always the same 
> even after it rains.
>
> But on the console its being displayed.
>
> --
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> Groups "weewx-user" group.
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> an email to weewx-user+...@googlegroups.com.
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>

 -- 
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>>
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Re: [weewx-user] Re: ET Calculations always show Zero on HTML but correct on console.

[Thomas Keffer]

You want to treat it as kind of an inverse rain. So look inside of
skin.conf and copy the pattern for rain, except make sure that the
aggregation is at least one hour. The aggregation type, just like rain,
should be sum.

-tk

Fat-fingered from my Android

On Nov 8, 2017 10:32 AM, "Joe"  wrote:

>
> Ok I will look for the string to add to the conf file.
>
>
>
>
> On Wednesday, November 8, 2017 at 12:30:25 PM UTC-6, Tom Keffer wrote:
>>
>> Sure, there is no reason you can't plot ET. You just need to make sure
>> you have an aggregation period of at least an hour.
>>
>> -tk
>>
>> Fat-fingered from my Android
>>
>> On Nov 8, 2017 9:34 AM, "Joe"  wrote:
>>
>> Ok So I was assuming it would always show a field here at any given point
>> like what it does on the Vanage Console.
>>
>>
>> Is there not a 'graph' that can be displayed along with the rest of them
>> in the HTML ?
>>
>>
>>
>> On Wednesday, November 8, 2017 at 7:51:37 AM UTC-6, Tom Keffer wrote:
>>
>>> If record generation is hardware, then weewx is just reporting what was
>>> calculated by the Vantage console.
>>>
>>> The algorithm they use is rather complicated and is described here
>>> 
>>>  (see
>>> page 28-15). The main variables they depend on are actual and saturation
>>> water pressures, which are functions of humidity. So, rainfall is not taken
>>> into account, except in so far as it might affect relative humidity.
>>>
>>> -tk
>>>
>>> On Wed, Nov 8, 2017 at 5:01 AM, Joe  wrote:
>>>
 StdArchive field i record_generation is  HARDWARE







 On Sunday, November 5, 2017 at 5:04:40 AM UTC-6, Tom Keffer wrote:
>
> Are you using hardware record generation? Or, software? Look in
> weewx.conf in the [StdArchive] section, option record_generation.
>
> -tk
>
> On Sat, Nov 4, 2017 at 7:30 PM, Joe  wrote:
>
>> I didn't change the default settings for ET..  i will look at data
>> and try to see.
>>
>> The reason I think something is wrong is because its always the same
>> even after it rains.
>>
>> But on the console its being displayed.
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "weewx-user" group.
>> To unsubscribe from this group and stop receiving emails from it,
>> send an email to weewx-user+...@googlegroups.com.
>> For more options, visit https://groups.google.com/d/optout.
>>
>
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>>>
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