Hi all,

I want to fill in this matrix vectors (by column) without overwriting the first 
elements in column 1995.

Is there any other way than concatenate the first element with the vector and then 
assign this new vector 
to the column in matrix?   

 matrix[,"3"]<-c(1591,"vector")
 matrix[,"4"]<-c(405,"vector")
...
...

                               matrix
             2     3     4      5     6   7    8    9   10
1995  278 1591 405 482 285 99 220 48  4
1996 1220   NA  NA  NA  NA NA  NA NA NA
1997 3106   NA  NA  NA  NA NA  NA NA NA
1998 1895   NA  NA  NA  NA NA  NA NA NA
1999 1376   NA  NA  NA  NA NA  NA NA NA
2000  565   NA  NA  NA  NA NA  NA NA NA
2001  491   NA  NA  NA  NA NA  NA NA NA
2002 1169   NA  NA  NA  NA NA  NA NA NA
2003 2310   NA  NA  NA  NA NA  NA NA NA


Luis Ridao Cruz
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