[R] Problems with randomly generating samples

Nordlund, Dan (DSHS/RDA) NordlDJ at dshs.wa.gov
Wed May 13 17:36:27 CEST 2009

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
> Behalf Of Debbie Zhang
> Sent: Wednesday, May 13, 2009 8:18 AM
> To: r-help at r-project.org
> Subject: [R] Problems with randomly generating samples
> Dear R users,
> Can anyone please tell me how to generate a large number of samples in R, given
> certain distribution and size.
> For example, if I want to generate 1000 samples of size n=100, with a N(0,1)
> distribution, how should I proceed?
> (Since I dont want to do "rnorm(100,0,1)" in R for 1000 times)
> Thanks for help
> Debbie

How about

samples <- rnorm(1000*100,0,1)
dim(samples) <- c(1000,100)

Hope this is helpful,


Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA  98504-5204

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