[Met_help] Point data

[Tressa Fowler]

Joe,

Though you can make MET work with your data as John suggested, it is  
not designed for this problem. May I suggest use of an alternate,  
probably more appropriate, tool?

The R statistics software (free from r-project.org) has a package  
called 'verification'. This package was also developed by NCAR staff.  
It makes verifying sets of point forecasts and observations very easy,  
even producing appropriate graphics by default. You will have to  
download and install R first, then from within R you can get the  
verification package and its documentation.

Good luck with your verification, which ever way you decide to proceed.

Regards,

Tressa

Tressa L. Fowler
tressa at ucar.edu
Statistician
NCAR / DTC



On Feb 17, 2010, at 12:38 PM, John Halley Gotway wrote:

> Joe,
>
> MET is not set up to handle point-to-point data very.  The only  
> somewhat reasonable work-around is to reformat your point-to-point  
> matched pairs to look like the matched pairs (MPR) output lines from
> the Point-Stat tool... and use the ".stat" extension for the name of  
> that file.  Then, you could run that file through the STAT-Analysis  
> tool using the "aggregate_stat" job with "-line_type MPR" and
> use the "-out_line_type" option to specify what statistics you'd  
> like computed.
>
> There's a lot of overhead in storing the matched pairs in the "MPR"  
> line type since so many columns of data are redundant.  But that'd  
> be the easiest way to do it right now.
>
> Hope that helps.
>
> John
>
> Joe Eastman wrote:
>> Hello John,
>>
>> Is there a way to get metv2.0 to compare two point data sets? Can  
>> one write point data in grib format by specifying a 1x1x1 grid?  
>> This is really a crazy way to layer the data but I could not think  
>> of a way around it.
>>
>> Take care,
>> Joe
>>
>> Dr. Joseph L. Eastman
>> Senior Atmospheric Scientist
>> WindLogics Inc.
>> 201 4th St NW
>> Grand Rapids, MN
>> 55744
>>
>> c - 410.279.9702
>> w - 651.556.4297
>> jeastman at windlogics.com<mailto:jeastman at windlogics.com>
>>
>>
>>
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