[ferret_users] regarding top decile and bottom decile

[saurabh rathore <rohitsrb2020@xxxxxxxxx>]

Dear Ferreters,

G'day

I am following an example to compute the top and bottom decile of a seasonally averaged time series. The top decile means the 90th percentile and the bottom decile means 10th percentile. I want to select those years that are the top and bottom deciles of this time series to do a composite analysis. In my time series, I have 56 points as shown below.

yes? use test.nc
yes? sh da
     currently SET data sets:
    1> ./test.nc  (default)
 name     title                                                  I         J         K         L
 TS1      SSSI[D=1]/SSSI[D=1,L=@STD]       ...       ...       ...       1:56
       (T=16-SEP-1961 00:00:16-NOV-2016 00:00)
 
yes? sh gr ts1
    GRID GMH1
 name       axis              # pts                  start                end                        subset
 normal    X
 normal    Y
 normal    Z
 TMONTHLY1 TIME      56 i        16-OCT-1961 00:00    16-O