Re: [ferret_users] 21 yr running correlation

[Sulagna <sulagna.ray@xxxxxxxxx>]

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.

Best,

Sulagna

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:

Hi,

can anyone tell me how to do 21 yr running correlation in ferret between two data sets.

Regards, 

G Satyesh,

India.

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.

Ryo

--

G Satyesh

Attachment: 2015_Ray_etal.pdf
Description: Adobe PDF document