Andre,
1) The matrix you created was called 'x.3', not 'x'.
I guess this could be an item in 'The R Inferno',
perhaps it falls into Circle 8.3.32.
2) You don't need a loop at all:
x.3 <- matrix(rexp(3000, rate=2/3), nrow=1000)
This is Circle 3.
http://www.burns-stat.com/pages/Tutor/R_inferno.pdf
Pat
On 30/06/2012 05:09, andre bedon wrote:
Hi,
Wondering if anyone could help me out with this error.Im trying to fill a
matrix with random numbers taken from an exponential distribution using a loop:
x.3<-matrix(rep(0,3000),nrow=1000,byrow=T)for(i in
1:1000){x[i,]<-rexp(3,rate=2/3)}
I get the error message:
Error in x[i, ] <- rexp(3, rate = 2/3) : incorrect number of subscripts on
matrix
Any ideas??? Appreciate any thoughts.
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Patrick Burns
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(home of 'Some hints for the R beginner'
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
