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Re: [ferret_users] 21 yr running correlation

Hi Sandeep,

If I understand you correctly, is Fig 10, and Fig 13 of the attached paper is what you would like to do? i.e. a correlation over a sliding 20-year window? If yes, then you could do the same in ferret. Although it is a multi-step approach but is very straight-forward, where you simply save the correlations in a file, and re-open to plot it. 

However, if I understood you wrongly, then am sorry.


On Tue, Aug 28, 2018 at 9:47 AM, Satyesh Ghetiya <satyeshghetiya@xxxxxxxxx> wrote:
Hi Sandeep, 
Do you have, for each year, correlation r in XY dimension ? I mean r for each grid point of XY for each year ? Also can you elaborate the dimensions of two data sets ? 

On Tue, Aug 28, 2018 at 11:48 AM, Sandeep Mohapatra <sandeepmohapatra21@gmail.com> wrote:
can anyone tell me how to do 21 yr running correlation in ferret between two data sets.

G Satyesh,

On Tue, Aug 28, 2018 at 6:16 PM, Ryo Furue <furue@xxxxxxxxxx> wrote:
On Tue, Aug 28, 2018 at 4:31 PM saurabh rathore <rohitsrb2020@xxxxxxxxx> wrote:
Dear Ryo,

Are you saying that the plot of such running correlation and trends will be like a time series ?

I'm sorry, Saurabh, Sandeep, and other Ferret users.  I've begun to think that my idea was wrong.  I thought @SBX was the solution, but it doesn't keep the same mean value over the window, in formulae like

      u' = u - mean(u).

So, indeed the correct solution would be complicated.  I'd like to know if there is an elegant solution.


G Satyesh

Attachment: 2015_Ray_etal.pdf
Description: Adobe PDF document

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