Why cannot get the expected values in my function
On Tue, 2009-12-08 at 23:22 -0500, David Winsemius wrote:
On Dec 8, 2009, at 11:07 PM, rusers.sh wrote:
Hi, In the following function, i hope to save my simulated data into the "result" dataset, but why the final "result" dataset seems not to be generated.
#Function
simdata<-function (nsim) {
# Instead why not: cbind(x=runif(nsim), y=runif(nsim) )
or:
m <- matrix(runif(nsim*2), ncol = 2)
## if names on m needed
colnames(m) <- c("x","y")
G
} #simulation
simdata(10) #correct result
x y [1,] 0.2655087 0.372123900 [2,] 0.1848823 0.702374036 [3,] 0.1680415 0.807516399 [4,] 0.5858003 0.008945796 [5,] 0.2002145 0.685218596 [6,] 0.6062683 0.937641973 [7,] 0.9889093 0.397745453 [8,] 0.4662952 0.207823317 [9,] 0.2216014 0.024233910 [10,] 0.5074782 0.306768506 But, the dataset "result" wasnot assigned the above values. What is the problem?
result #wrong result??
x y [1,] NA NA [2,] NA NA [3,] NA NA [4,] NA NA [5,] NA NA [6,] NA NA [7,] NA NA [8,] NA NA [9,] NA NA [10,] NA NA
Thanks a lot. -- ----------------- Jane Chang Queen's [[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD Heritage Laboratories West Hartford, CT
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%