[R] macro function

[mrzung]

hi, 

I know how to use the "for" loop function like: 

for(i in 1:ncol(mat)){ 
mat[i]<-b[i,2] 
} 

but, in this case 

r1<-b[1,1] 
r2<-b[2,1] 
r3<-b[3,1] 
r4<-b[4,1] 

* 
* 
* 

r3002<-b[3002,1] 
r3003<-b[3003,1] 

- must make vectors 

how should I make a efficient code for that? 

Is there anything in R like SAS MACRO function? 

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