Re: [ferret_users] 21 yr running correlation

[Sandeep Mohapatra <sandeepmohapatra21@xxxxxxxxx>]

thanks to all...

Now I think  i will able to solve the sliding window correlation.

On Wed, Aug 29, 2018 at 8:27 AM Ryo Furue <furue@xxxxxxxxxx> wrote:

Hi Andrew,

On Wed, Aug 29, 2018 at 5:07 AM Andrew Wittenberg - NOAA Federal <andrew.wittenberg@xxxxxxxx> wrote:

Running correlations are easy to compute in Ferret.  If your signals are A and B, then:

! define the running time-averaging transformation,

! e.g. 21*12 grid points (21 years, if time step is 1 month)

def sym trans "t=@sbx:`21*12`"

let a2 = a^2; let b2 = b^2; let prod =