[Met_help] [rt.rap.ucar.edu #84388] History for question about V5.2 Stat-Analysis (UNCLASSIFIED)

Mon Mar 12 14:26:32 MDT 2018

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  Initial Request
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CLASSIFICATION: UNCLASSIFIED

I ran Stat-Analysis without specifying the settings -boot_interval and -rank_corr_flag and the log file shows what appear to be the default settings for these. The value of the setting was 1 in both cases. What does the value of 1 mean? I checked the config file REAME and the User's Guide, but I only find possible values like PCTILE or FALSE respectively. 

Thanks.

R/
John

Mr. John W. Raby
U.S. Army Research Laboratory
White Sands Missile Range, NM 88002
(575) 678-2004 DSN 258-2004
FAX (575) 678-1230 DSN 258-1230
Email: john.w.raby2.civ at mail.mil

CLASSIFICATION: UNCLASSIFIED

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  Complete Ticket History
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Subject: question about V5.2 Stat-Analysis (UNCLASSIFIED)
From: John Halley Gotway
Time: Mon Mar 12 11:30:56 2018

John,

Good question.  The stat_analysis tool can be run to do many different
job
types.  Some of those jobs include the computation of bootstrap
confidence
intervals... specifically reading MPR lines and computing derived
statistics.  When stat_analysis builds the requested jobstring, it
includes
the bootstrapping settings in the output.  If the users hasn't
specified
them, as in your case, the defaults are used.

First, -rank_corr_flag turns on/off the computation of rank
correlation
statistics, like Kendalls Tau.  It should be described in the user's
guide.  It is turned on (i.e. a value of 1) by default in
stat_analysis.
Set it to 0 to disable it.

Second, -boot_interval is described in the user's guide in the config
section about "boot".  But what does "-boot_interval 1" mean?  In the
MET
statistics tools, in the config file, you set:
  interval = PCTILE; or interval = BCA;

If you lookin in the file named ConfigConstants, you'll find those are
just
short-hand for an integer value:

// Bootstrapping interval type
PCTILE         = 1;
BCA             = 2;

In the jobstring output from STAT-Analysis, we're being a bit lazy.
To be
more user-friendly, we could convert that "1" back to "PCTILE" and say
"-boot_interval PCTILE" instead.

But that's what's going on.

Hope that helps clarify.

Thanks,
John

On Sat, Mar 10, 2018 at 9:06 PM, Raby, John W USA CIV via RT <
met_help at ucar.edu> wrote:

>
> Sat Mar 10 21:06:31 2018: Request 84388 was acted upon.
> Transaction: Ticket created by john.w.raby2.civ at mail.mil
>        Queue: met_help
>      Subject: question about V5.2 Stat-Analysis (UNCLASSIFIED)
>        Owner: Nobody
>   Requestors: john.w.raby2.civ at mail.mil
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=84388 >
>
>
> CLASSIFICATION: UNCLASSIFIED
>
> I ran Stat-Analysis without specifying the settings -boot_interval
and
> -rank_corr_flag and the log file shows what appear to be the default
> settings for these. The value of the setting was 1 in both cases.
What does
> the value of 1 mean? I checked the config file REAME and the User's
Guide,
> but I only find possible values like PCTILE or FALSE respectively.
>
> Thanks.
>
> R/
> John
>
> Mr. John W. Raby
> U.S. Army Research Laboratory
> White Sands Missile Range, NM 88002
> (575) 678-2004 DSN 258-2004
> FAX (575) 678-1230 DSN 258-1230
> Email: john.w.raby2.civ at mail.mil
>
>
>
> CLASSIFICATION: UNCLASSIFIED
>
>
>

------------------------------------------------
Subject: RE: [Non-DoD Source] Re: [rt.rap.ucar.edu #84388] question about V5.2 Stat-Analysis (UNCLASSIFIED)
From: Raby, John W USA CIV
Time: Mon Mar 12 14:20:24 2018

CLASSIFICATION: UNCLASSIFIED

John -

Thanks for clarifying that and for the reference doc. I didn't check
the ConfigConstants file, but I'll add that to the items I check for
the next time. Later, I ran Stat-Analysis with a config file and those
bootstrap settings were explicit there, so what you are saying now
coincides with info in the most recent log file.

R/
John

-----Original Message-----
From: John Halley Gotway via RT [mailto:met_help at ucar.edu]
Sent: Monday, March 12, 2018 11:31 AM
To: Raby, John W CIV USARMY RDECOM ARL (US)
<john.w.raby2.civ at mail.mil>
Subject: [Non-DoD Source] Re: [rt.rap.ucar.edu #84388] question about
V5.2 Stat-Analysis (UNCLASSIFIED)

All active links contained in this email were disabled.  Please verify
the identity of the sender, and confirm the authenticity of all links
contained within the message prior to copying and pasting the address
to a Web browser.

----

John,

Good question.  The stat_analysis tool can be run to do many different
job types.  Some of those jobs include the computation of bootstrap
confidence intervals... specifically reading MPR lines and computing
derived statistics.  When stat_analysis builds the requested
jobstring, it includes the bootstrapping settings in the output.  If
the users hasn't specified them, as in your case, the defaults are
used.

First, -rank_corr_flag turns on/off the computation of rank
correlation statistics, like Kendalls Tau.  It should be described in
the user's guide.  It is turned on (i.e. a value of 1) by default in
stat_analysis.
Set it to 0 to disable it.

Second, -boot_interval is described in the user's guide in the config
section about "boot".  But what does "-boot_interval 1" mean?  In the
MET statistics tools, in the config file, you set:
  interval = PCTILE; or interval = BCA;

If you lookin in the file named ConfigConstants, you'll find those are
just short-hand for an integer value:

// Bootstrapping interval type
PCTILE         = 1;
BCA             = 2;

In the jobstring output from STAT-Analysis, we're being a bit lazy.
To be more user-friendly, we could convert that "1" back to "PCTILE"
and say "-boot_interval PCTILE" instead.

But that's what's going on.

Hope that helps clarify.

Thanks,
John

On Sat, Mar 10, 2018 at 9:06 PM, Raby, John W USA CIV via RT <
met_help at ucar.edu> wrote:

>
> Sat Mar 10 21:06:31 2018: Request 84388 was acted upon.
> Transaction: Ticket created by john.w.raby2.civ at mail.mil
>        Queue: met_help
>      Subject: question about V5.2 Stat-Analysis (UNCLASSIFIED)
>        Owner: Nobody
>   Requestors: john.w.raby2.civ at mail.mil
>       Status: new
>  Ticket <Caution-url:
> Caution-https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=84388 >
>
>
> CLASSIFICATION: UNCLASSIFIED
>
> I ran Stat-Analysis without specifying the settings -boot_interval
and
> -rank_corr_flag and the log file shows what appear to be the default
> settings for these. The value of the setting was 1 in both cases.
What
> does the value of 1 mean? I checked the config file REAME and the
> User's Guide, but I only find possible values like PCTILE or FALSE
respectively.
>
> Thanks.
>
> R/
> John
>
> Mr. John W. Raby
> U.S. Army Research Laboratory
> White Sands Missile Range, NM 88002
> (575) 678-2004 DSN 258-2004
> FAX (575) 678-1230 DSN 258-1230
> Email: john.w.raby2.civ at mail.mil
>
>
>
> CLASSIFICATION: UNCLASSIFIED
>
>
>

CLASSIFICATION: UNCLASSIFIED

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