Displaying Compound Variables

[Jason Snyder]

I have a script to produce compound variables:

'sdfopen uwnd.2001.nc'
'set gxout shaded'
'set t 1'
'define U=uwnd'
i=1
count=1
While(i<5)
    count=count+1
    say count
   'set t 'i
   U.count=uwnd
    i=i+1
endwhile
the compound variable is U.count.  How do I go about producing and
displaying compound variables?
What modifications must I make to the script.

What I want to make a formula that would be like this
U(t)=U(t)+U(t-1)+U(t-2).  Where t-1 is a time step earlier than t and t-2 is
two timesteps earlier than t.  I want to have this formula work for
steptimes from 1 to say 5 (set t 1 5) How do I go about doing this?  Are
compound variables event the answer?

Thanks,

Jason
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