[R] simulation with "rpois"
Pablo Andres
pablo at hpcf.upr.edu
Thu Nov 2 12:59:02 CET 2006
Hi there, I need some helpo with one simulation.
I have a matrix of 4x21
I want ro generate 100 random Chi2 distribution but inly from the first
row of my matrix.
This is what I try:
Option (a):
>lambda=1:100
>f=function(x)chisq(4,0,x)
>lapply(lambda,f)
It doesn't work!
option(b):
>m=mean(matrix[1,])
>x<-rpois(100,lambda=m)
Works, but only generates a row of 25 values.
The point is:
I need a matrix of 100(rows) x 4(columns)
thanks a lot!
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