Re: [ferret_users] 21 yr running correlation

To: Ryo Furue <furue@xxxxxxxxxx>

Subject: Re: [ferret_users] 21 yr running correlation

From: saurabh rathore <rohitsrb2020@xxxxxxxxx>

Date: Tue, 28 Aug 2018 17:30:40 +1000

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Dear Ryo,

Are you saying that the plot of such running correlation and trends will be like a time series ? For an example I am attaching a paper which is showing running trend figure 2b. Please help me to understand that how to do these things in ferret.

cheers, saurabh

On Tue, Aug 28, 2018 at 5:24 PM Ryo Furue <furue@xxxxxxxxxx> wrote:

Hi Saurabh,

On Tue, Aug 28, 2018 at 3:59 PM saurabh rathore <rohitsrb2020@xxxxxxxxx> wrote:
Dear Ryo
I want to highlight what Sandeep is asking. He is asking to plot the time series of correlation which is defined for the window of 21 years. it is similar like running trend. So it will show the variation of correlation in the window of 21 year for the time period used in the analysis.

I also searched a lot for running trend in ferret but I found its very cumbersome in ferret.

What did you find which is cumbersome? Do you mean that it's significantly more complicated than when you calculate the non-"running" correlation coefficient?

I've never calculated running correlation coefficients, but I have calculated running standard deviation, which is straightforward, because the codes for the "running" and non-"running" versions are almost the same. The running version uses a moving window through @SBX, which is the only difference.

Ryo

REGARDS

Saurabh Rathore

Research Scholar (PhD.)

Centre For Oceans, Rivers, Atmosphere & Land Science Technology

Indian Institute Of Technology, Kharagpur

contact :- 91- 8345984434

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