Averaging data

[Bamba Sylla]

Hi everybody !
I was trying to plot images for precipitations by
averaging July, August, September between 1990 and
1992. This is what i have done :

d ave(ave(rt,t-1,t+1),time=aug1990,time=aug1992,1year)

But it doesn't work, i don't know why.
Can't anybody tell where it 's wrong ?
Thanks !

M. Bamba SYLLA
Laboratoire de Physique de l'Atmosphère Siméon Fongang
Ecole Supérieure Polytechnique
Université Cheikh Anta Diop de Dakar
BP : 5085 Dakar-Fann, SENEGAL
Tel : (+221) 825 93 64
        (+221) 549 80 02
Fax : (+221) 825 93 64
Email: syllabamba at yahoo.fr






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