[Met_help] [rt.rap.ucar.edu #86401] History for MetViewer: averaging in time series?

Tue Aug 7 15:57:26 MDT 2018

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  Initial Request
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Hello.  Does MetViewer currently have the capability of averages of a 
time series, say annual (or monthly) averages of a daily score?  
Something like the attached (annual averages of daily GFS fractions 
skill score, at 25mm/day and 62km horizontal scale, from the FVS).  Just 
wondering.  Thanks!

Ying

-- 
Ying Lin
NCEP/EMC/Verification, Post-processing and Product Generation Branch
NCWCP Cubicle No. 2015
Ying.Lin at noaa.gov

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  Complete Ticket History
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Subject: MetViewer: averaging in time series?
From: Tressa Fowler
Time: Thu Aug 02 09:50:55 2018

Hi Ying,

Yes, METViewer will do averages (or medians or sums) of scores. You
probably want to use the series plot for this, and near the bottom
left in the Statistics section you can choose which function to apply
(mean, median, or sum). However, I would caution you about averaging
scores. For some it makes sense, and for others it does not.

Tressa

On Tue Jul 31 09:06:46 2018, ying.lin at noaa.gov wrote:
> Hello.  Does MetViewer currently have the capability of averages of
a
> time series, say annual (or monthly) averages of a daily score? 
> Something like the attached (annual averages of daily GFS fractions
> skill score, at 25mm/day and 62km horizontal scale, from the FVS). 
Just
> wondering.  Thanks!
>
> Ying
>

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Subject: MetViewer: averaging in time series?
From: Ying Lin
Time: Thu Aug 02 13:48:09 2018

Thanks Tressa.  I posed the question poorly - what I meant to ask was,
is there a way to make a time series plot from daily stats (e.g.
contingency table counts) were the scores are computed from stats
aggregated over a certain time period (say monthly)?  Attached are 1)
and 2) daily GSS scores from daily stats - png and xml from MetViewer,
for 1 Jun - 31 Aug 2016 and 3) FVS plot of monthly aggregated scores. 
Is there a way to do such monthly/annual aggregation in MetViewer?  I
see the "Statistics" box on the lower-left of MetViewer and usually
choose "Aggregation statistics", but there doesn't seem to be an
option
of choosing to aggregate over a longer time period when plotting a
time
series.  Is this not yet an option in MetViewer?

Thanks again -

Ying

On 08/02/2018 11:50 AM, Tressa Fowler via RT wrote:
> Hi Ying,
>
> Yes, METViewer will do averages (or medians or sums) of scores. You
probably want to use the series plot for this, and near the bottom
left in the Statistics section you can choose which function to apply
(mean, median, or sum). However, I would caution you about averaging
scores. For some it makes sense, and for others it does not.
>
> Tressa
>
> On Tue Jul 31 09:06:46 2018, ying.lin at noaa.gov wrote:
>> Hello.  Does MetViewer currently have the capability of averages of
a
>> time series, say annual (or monthly) averages of a daily score?
>> Something like the attached (annual averages of daily GFS fractions
>> skill score, at 25mm/day and 62km horizontal scale, from the FVS). 
Just
>> wondering.  Thanks!
>>
>> Ying
>>
>

--
Ying Lin
NCEP/EMC/Verification, Post-processing and Product Generation Branch
NCWCP Cubicle No. 2015
Ying.Lin at noaa.gov

------------------------------------------------
Subject: MetViewer: averaging in time series?
From: Tressa Fowler
Time: Thu Aug 02 14:36:34 2018

Hi Ying,

METViewer is agnostic about the groups of cases it accumulates over.
It
just summarizes over all values that share an identical independent
variable value (i.e. the x-axis value). So if your database had a
variable
called "YYYYMM" that could be placed on the x-axis, all database lines
(say
each day of that month) sharing the same YYYYMM would be accumulated
(or
averaged). So yes, this can be done in METViewer now, but you may need
to
adjust your database values accordingly (it won't calculate the YYYYMM
for
you from the date field).

Tatiana, please correct me if I have it wrong.

Tressa

On Thu, Aug 2, 2018 at 1:48 PM, Ying Lin via RT <met_help at ucar.edu>
wrote:

>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=86401 >
>
> Thanks Tressa.  I posed the question poorly - what I meant to ask
was,
> is there a way to make a time series plot from daily stats (e.g.
> contingency table counts) were the scores are computed from stats
> aggregated over a certain time period (say monthly)?  Attached are
1)
> and 2) daily GSS scores from daily stats - png and xml from
MetViewer,
> for 1 Jun - 31 Aug 2016 and 3) FVS plot of monthly aggregated
scores.
> Is there a way to do such monthly/annual aggregation in MetViewer?
I
> see the "Statistics" box on the lower-left of MetViewer and usually
> choose "Aggregation statistics", but there doesn't seem to be an
option
> of choosing to aggregate over a longer time period when plotting a
time
> series.  Is this not yet an option in MetViewer?
>
> Thanks again -
>
> Ying
>
> On 08/02/2018 11:50 AM, Tressa Fowler via RT wrote:
> > Hi Ying,
> >
> > Yes, METViewer will do averages (or medians or sums) of scores.
You
> probably want to use the series plot for this, and near the bottom
left in
> the Statistics section you can choose which function to apply (mean,
> median, or sum). However, I would caution you about averaging
scores. For
> some it makes sense, and for others it does not.
> >
> > Tressa
> >
> > On Tue Jul 31 09:06:46 2018, ying.lin at noaa.gov wrote:
> >> Hello.  Does MetViewer currently have the capability of averages
of a
> >> time series, say annual (or monthly) averages of a daily score?
> >> Something like the attached (annual averages of daily GFS
fractions
> >> skill score, at 25mm/day and 62km horizontal scale, from the
FVS).  Just
> >> wondering.  Thanks!
> >>
> >> Ying
> >>
> >
>
> --
> Ying Lin
> NCEP/EMC/Verification, Post-processing and Product Generation Branch
> NCWCP Cubicle No. 2015
> Ying.Lin at noaa.gov
>
>
>
>

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Subject: Re: [rt.rap.ucar.edu #86401] MetViewer: averaging in time series?
From: Ying Lin
Time: Fri Aug 03 09:03:47 2018

OK, thanks Tressa.  Please feel free to close this ticket at your
convenience.  Ying

On 08/02/2018 04:36 PM, Tressa Fowler via RT wrote:
> Hi Ying,
>
> METViewer is agnostic about the groups of cases it accumulates over.
It
> just summarizes over all values that share an identical independent
> variable value (i.e. the x-axis value). So if your database had a
variable
> called "YYYYMM" that could be placed on the x-axis, all database
lines (say
> each day of that month) sharing the same YYYYMM would be accumulated
(or
> averaged). So yes, this can be done in METViewer now, but you may
need to
> adjust your database values accordingly (it won't calculate the
YYYYMM for
> you from the date field).
>
> Tatiana, please correct me if I have it wrong.
>
> Tressa
>
> On Thu, Aug 2, 2018 at 1:48 PM, Ying Lin via RT <met_help at ucar.edu>
wrote:
>
>> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=86401 >
>>
>> Thanks Tressa.  I posed the question poorly - what I meant to ask
was,
>> is there a way to make a time series plot from daily stats (e.g.
>> contingency table counts) were the scores are computed from stats
>> aggregated over a certain time period (say monthly)?  Attached are
1)
>> and 2) daily GSS scores from daily stats - png and xml from
MetViewer,
>> for 1 Jun - 31 Aug 2016 and 3) FVS plot of monthly aggregated
scores.
>> Is there a way to do such monthly/annual aggregation in MetViewer?
I
>> see the "Statistics" box on the lower-left of MetViewer and usually
>> choose "Aggregation statistics", but there doesn't seem to be an
option
>> of choosing to aggregate over a longer time period when plotting a
time
>> series.  Is this not yet an option in MetViewer?
>>
>> Thanks again -
>>
>> Ying
>>
>> On 08/02/2018 11:50 AM, Tressa Fowler via RT wrote:
>>> Hi Ying,
>>>
>>> Yes, METViewer will do averages (or medians or sums) of scores.
You
>> probably want to use the series plot for this, and near the bottom
left in
>> the Statistics section you can choose which function to apply
(mean,
>> median, or sum). However, I would caution you about averaging
scores. For
>> some it makes sense, and for others it does not.
>>> Tressa
>>>
>>> On Tue Jul 31 09:06:46 2018, ying.lin at noaa.gov wrote:
>>>> Hello.  Does MetViewer currently have the capability of averages
of a
>>>> time series, say annual (or monthly) averages of a daily score?
>>>> Something like the attached (annual averages of daily GFS
fractions
>>>> skill score, at 25mm/day and 62km horizontal scale, from the
FVS).  Just
>>>> wondering.  Thanks!
>>>>
>>>> Ying
>>>>
>> --
>> Ying Lin
>> NCEP/EMC/Verification, Post-processing and Product Generation
Branch
>> NCWCP Cubicle No. 2015
>> Ying.Lin at noaa.gov
>>
>>
>>
>>

--
Ying Lin
NCEP/EMC/Verification, Post-processing and Product Generation Branch
NCWCP Cubicle No. 2015
Ying.Lin at noaa.gov

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