On 07/21/2011 07:18 PM, karena wrote:
Hi,
I want to generate multiple sets of random numbers.
The requirement is that:
1) each set have 3 random numbers;
2) the sum of the three number is always 1.
how to do this?
Try this:
df<-data.frame(a=runif(10),b=runif(10))
df$c=df$a+df$b
df
Replace 10 with the number of rows that you want. Replace runif with
your random function of choice.
Jason
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