Calculating Percentiles in GrADS

[hersala]

Thanks a lot dear Stephen !
I hope someone answer your question,
Hernán


2008/4/28 Stephen R McMillan <smcmillan at planalytics.com>:

>
> Hernán,
> I have done it three different ways:
>
> 1. Use "set gxout print" and "prnopts" along with "write" command to
> output data as text file, which I can then read or open directly in Excel.
> 2. Use "fwrite" to output field as gridded binary, which I can then read
> and load into an Excel spreadsheet using VB macro code.
> 3. Extract data gridpoint-by-gridpoint using "q defval..." in a lat/lon
> loop while using "write" command to output to an Excel-compatible CSV or
> other text file.
>
> Stephen Mc
>
>
> *hersala <hersala at GMAIL.COM>*
> Sent by: GRADSUSR at LIST.CINECA.IT
>
> 04/28/2008 01:43 PM
> Please respond to
> GRADSUSR at LIST.CINECA.IT
>
> To
> GRADSUSR at LIST.CINECA.ITcc
> Subject
> Re: Calculating Percentiles in GrADS
>
>
>
> Hi Stephen:
> Sorry, because I am answering your question with another question, in fact
> I do not know how to do what are you asking.
> But, if you let me, how do you export the info that you are visualising in
> GrADS to Excel?
> Thanks in advance,
> Hernán
>
> 2008/4/28 Stephen R McMillan <*smcmillan at planalytics.com*<smcmillan at planalytics.com>
> >:
>
> I found nothing in the user archives to address this question: Is there a
> relatively simple way to calculate various percentiles in GrADS? For
> example:
>
> 1.  Assume I have a 30-year dataset of daily mean temperature values for
> an x-y domain, contained in a single 3D (x,y,t) gridded file
> 2.  Desired output: a single 3D gridded file containing 11 variables for
> each gridpoint, per day of year (excluding Feb 29th): 0th pcntile, 10th
> pcntile, 20th pcntile...100th pcntile. In other words, there would be 30
> data values to analyze per grid location (each Jan 1st, each Jan 2nd...each
> Dec 31st).
>
> My alternative would be to evaluate text output in Excel then re-convert
> to gridded, but I'd prefer to keep in GrADS.
>
> I'm using GrADS v1.9.0-rc1 (win32) on Win XP Pro.
>
> Stephen Mc
>
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