Re: [ferret_users] Produce a time serie by averaging a large variable

[Ryo Furue <furue@xxxxxxxxxx>]

Dear Patrick

VMRN2O   N2O Volume Mixing Ratio          1:144     1:143     1:79      1:11315

[. . .]

yes? plot VMRN2O[i=@ave, j=@ave, k=@ave]

[...]
What I do not understand is why the memory has to be so large
and finally why an internal chunk with only 144x143x79 cannot be made internally ?

I don't know the internal well enough to be able to answer those questions. Here I just propose a solution to your problem: You create a temporary file that stores the timeseries:

let ave = VMRN2O[i=@ave, j=@ave, k=@ave]

spawn rm tmp.nc

repeat/L=1:11315 (save/append/file=tmp.nc ave)

cancel var ave

open tmp.nc

plot ave 

(I haven't tested this code.)

Ryo