Re: [netcdfgroup] Calculating statistical parameters:Percentiles

• To: "Elias Criado" <ecriado@xxxxxx>
• Subject: Re: [netcdfgroup] Calculating statistical parameters:Percentiles
• From: "David Wang" <climater@xxxxxxxxx>
• Date: Fri, 28 Nov 2008 10:33:23 -0500

Hi Elias,

ncap2 is a part of the netcdf operators, or NCO, which are "a suite of
programs known as *operators*. Each operator is a standalone, command line
program which is executed at the UNIX shell-level". ncap2 is one of these
operators. You need to install NCO.

http://nco.sourceforge.net/

I'm not familiar with ncap2 is this particular usage. Alternatively I would
use another package called CDO (Climate Data Operators), which provides
several operators specializing in calculating percentiles (for example,
timpctl).

http://www.mpimet.mpg.de/fileadmin/software/cdo/

HTH,
David

On Fri, Nov 28, 2008 at 4:20 AM, Elias Criado <ecriado@xxxxxx> wrote:

> Hi Henry Butowsky
>
> I have read a message about Calculating medians, quartiles etc of a
> variable in a NetCDF file.
>
> It said:
>
> "Im a netcdf programmer -It may be possible to write a custom operatosr
> for nco tool "ncap2" that calculates quartiles"
>
>
> I would like to know if you could give me some examples of how to create
> a custom operator or some indications to be sussces.
> May be it is too dificult and it would be better convert data to ASCII
> and after that write a program in fortran to calculate percentiles.
>
> If I try to use ncap2,
>  Does it have its own language?
> I just should install de package? and after  that I would be able to use
> the language in a shell? Doesn t it?
> I just know script language and fortran programming and a littel of C.
>
> Thanks a lot
>
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• References:
  • [netcdfgroup] Calculating statistical parameters:Percentiles
    • From: Elias Criado