composites

[Stephen R McMillan]

Re-submitted to Users Group. SMc



Stephen R. McMillan/Planalytics
04/23/2008 04:00 PM

To
teddyallen at yahoo.com
cc

Subject
Re: composites





Teddy,
If you're trying to do a straight average of the different timesteps, try 
something like the following:

'define comp=(var(t=400)+var(t=424)+var(t=532)+var(t=664))/4' 
'd comp'

where comp=composite and var=your variable, assuming all timesteps (in 
this case) are within the same data file.

Stephen Mc



Teddy Allen <teddyallen at YAHOO.COM> 
Sent by: GRADSUSR at LIST.CINECA.IT
04/23/2008 03:42 PM
Please respond to
teddyallen at yahoo.com


To
GRADSUSR at LIST.CINECA.IT
cc

Subject
composites





Dear GrADS users,
I would like to create a composite image of non-sequential time periods. 
In my dataset, I would like to composite t=400, t=424, t=532, and t=664 
into one contour. I am competent in creating averages with sequential time 
steps, but am unable to create averages for times that are irregular in 
pattern.
I have searched the on-line archives, but did not locate an answer. Does 
any body have a suggestion? ( I am using GrADS version 1.8SL11 on a PC.)

Thank you,
Teddy Allen


To move quickly, go alone. To move far, go together. --- African Proverb


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