R help - Jul 2006 - Generating random normal distribution with mean 0 and standard deviation 1

Hello,

This must be really simple, but I can't find it on R Site search.  I need to
generate a random normally distributed series with mean 0 and sd 1. In 
Matlab, this code is randn(n).

The closest I found is runif(20,-1,1) but this forces a maximum and a 
minimum, and there's no way to specify a standard deviation of 1.
>sd(runif(20,-1,1))
[1] 0.578164

?rnorm

On 14/07/06, Neuro LeSuperH?ros <neuro3000 at hotmail.com>
wrote:
> Hello,
>
> This must be really simple, but I can't find it on R Site search.  I
need to
> generate a random normally distributed series with mean 0 and sd 1. In
> Matlab, this code is randn(n).
>
> The closest I found is runif(20,-1,1) but this forces a maximum and a
> minimum, and there's no way to specify a standard deviation of 1.
>
> >sd(runif(20,-1,1))
> [1] 0.578164
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>

See rnorm() 

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at
stat.math.ethz.ch] On Behalf Of Neuro LeSuperH?ros
Sent: 14 July 2006 13:15
To: r-help at stat.math.ethz.ch
Subject: [R] Generating random normal distribution with mean 0 and
standarddeviation 1

Hello,

This must be really simple, but I can't find it on R Site search.  I need to
generate a random normally distributed series with mean 0 and sd 1. In 
Matlab, this code is randn(n).

The closest I found is runif(20,-1,1) but this forces a maximum and a 
minimum, and there's no way to specify a standard deviation of 1.
>sd(runif(20,-1,1))
[1] 0.578164

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

On Fri, 2006-07-14 at 08:14 -0400, Neuro LeSuperH?ros
wrote:
> Hello,
> 
> This must be really simple, but I can't find it on R Site search.  I
need to
> generate a random normally distributed series with mean 0 and sd 1. In 
> Matlab, this code is randn(n).
> 
> The closest I found is runif(20,-1,1) but this forces a maximum and a 
> minimum, and there's no way to specify a standard deviation of 1.
> 
> >sd(runif(20,-1,1))
> [1] 0.578164
help.search("normal") leads you to "Normal(stats)".

?Normal leads you to rnorm().

More generally, help.search("distributions") will give you an overview
of the various distributions available in your installation.

HTH,

Marc Schwartz