Actually, I find a method. The function reshape" OR array
data_5m<-array(data,c(5,length(data)/5))
and
data_5m[1,] is what I wanted ,but I donot think it is a good method.
2013/1/14 Jeff Newmiller <jdnew...@dcn.davis.ca.us>
> ab <- AA[(1:10)*10]
--
TANG Jie
Email: totang...@gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China
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