[R] Populate a matrix

Rainer Schuermann rainer.schuermann at gmx.net
Wed Oct 5 18:29:12 CEST 2011


m <- matrix( rep( y, length( x ) ), length( y ), length( x ) )


On Wednesday 05 October 2011 18:11:18 fernando.cabrera at nordea.com wrote:
> Hi guys
> 
> I have vectors x <- c(1,2,3,4) and y <- c(4,3,9) and would like to generate a matrix which has 3 rows (length(y)) and 4 
columns (length(x)), and each row is the corresponding y element repeated length(x) times.
> 
> 4,4,4,4
> 3,3,3,3
> 9,9,9,9
> 
> Thanks.
> 
> Fernando Álvarez
> 
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