shift or extend data

[Emilie Vanvyve <vanvyve@xxxxxxxxxxxxxx>]

Hello,

I have again a question to submit to you.
Let's have a variable 'var' with 12 values corresponding to each 2 hours of a day. They are 0 always, except at noon where it equals 4.
1:	0h:	0
2:	2h:	0
3:	4h:	0
4:	6h:	0
5:	8h:	0
6:	10h:	0
7:	12h:	4
8:	14h:	0
9:	16h:	0
10:	18h:	0
11:	20h:	0
12:	22h:	0

I would like to extend my non-zero value to all other time steps, except some:
0h:	0
2h:	0
4h:	4
6h:	4
8h:	4
10h:	4
12h:	4
14h:	4
16h:	4
18h:	4
20h:	4
22h:	0

At present, the only way I found is:
let var_1 = var[L=@shf:-1]
let var_2 = var[L=@shf:-2]
...
and then:
let varA = if MOD(L+5,12) eq 1 then var_1 else var
let varB = if MOD(L+5,12) eq 2 then var_2 else varA
...

Is there no other way to "fill" a variable with specified values ?
Thanks for any suggestion!

Emilie

____________________________________________________________
Emilie VANVYVE
Physicist, PhD student

Université catholique de Louvain (UCL)
Institut d'astronomie et de géophysique G. Lemaître (ASTR)
Chemin du Cyclotron, 2
1348 Louvain-la-Neuve (Belgium)
Phone : +32-(0)10-473300
Fax : +32-(0)10-474722
E-mail : vanvyve@astr.ucl.ac.be
Web : www.astr.ucl.ac.be