[gradsusr] define variable independent of time

[Becker, Bernd]

Simple question,
complicated answer:

I would like to composite stuff from several  files.

Each file has its own time and date info in its own .ctl file. 

How can I add elements from different such files?

How can I break away from the strict treatment of the time dimension in
grads?

open file1.ctl
define a=ave(b,t=1,t=34)
close 1
open file2.ctl
define c= ave(b,t=3,t=9)
close 2
etc.

d a+c 
Cannot contour grid - all undefined values

because a and c have different times. 

What can be done about this?

Have a nice weekend.
Bernd.

--
Bernd Becker   Climate Impacts Product Development
Met Office Hadley Centre    FitzRoy Road  Exeter   Devon EX1 3PB  United
Kingdom
Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
E-mail:bernd.becker at metoffice.gov.uk -
http://www.metoffice.gov.uk/research/our-scientists/seasonal-to-decadal/
bernd-becker
http://www.metoffice.gov.uk/news/releases/archive/2011/weather-game