Hi,
i am trying to do a small job but it's bugging and i don't know what's
happening.
let's say i have four matrix, M01_a, M02_a, M01_b, M02_b that looks
like this
col1 col2
1 20
2 25
3 26
4 30
5 35
6 64
7 75
8 80
9 85
and a big matrix m:(21044*18)
what i want to do is
m1<- rbind(m[M01_a[,2],], m[M01_b[,2],])
m2 <- rbind(m[M02_a[,2],], m[M02_b[,2],])
the best will be to integrate this in a loop, so i just did this
for (i in 1:2){
mb<- rbind(m[paste("M0",i,"_a[,2]", sep=""),], m[paste("M0",i,"_b[,2]",
sep=""),])
}
but this didn't work :-(
i've been tring the whole afternoon , plz some help.
thx,
josephine
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