Re: [ferret_users] Selecting groups of data

To: Alexander Audet <alexander.c.audet@xxxxxxxxx>

Subject: Re: [ferret_users] Selecting groups of data

From: Ryo Furue <furue@xxxxxxxxxx>

Date: Sat, 4 Jan 2020 13:16:11 +0900

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Hi Alexander,

On Sat, Jan 4, 2020 at 12:27 AM Alexander Audet <alexander.c.audet@xxxxxxxxx> wrote:

Is there a way to select chunks of data? Say if I had 24 months over 2 years, so that L=1:24, somehow select 1:3, then 13:15? I could imagine using a command like 1:24:3:12, (select 3 points at every 12th value). My browsing through the documentation makes it seem impossible, but it seems like such a simple request, I have a hard time believing that.

I suspect there are smarter ways, but I would try 1) saving yourvariable[L=1:3@AVE], yourvariable[L=13:15@AVE], etc. into separate files, 2) combining them as an ensemble (aggregate), and 3) taking the ensemble average.

Or, I might consider exploring NCO, which seems to directly support your idea: http://nco.sourceforge.net/nco.html#drn

Cheers,

Ryo