or rbinom(n, size = 1, prob)
Regards,
Yihui
--
Yihui Xie <[EMAIL PROTECTED]>
Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
Mobile: +86-15810805877
Homepage: http://www.yihui.name
School of Statistics, Room 1037, Mingde Main Building,
Renmin University of China, Beijing, 100872, China
On Thu, Nov 20, 2008 at 6:57 AM, Rolf Turner <[EMAIL PROTECTED]> wrote:
>
> On 20/11/2008, at 11:47 AM, [EMAIL PROTECTED] wrote:
>
>> Dear R people,
>> what functions generate respectively vectors with each element is
>> respectively zero and one.
>> sorry for my credulous questions and many thanks in advance.
>
> If you want a *random* (i.i.d.) vector of zeroes and ones, then the
> following sort of thing
> will do it:
>
> sample(0:1,42,TRUE) # TRUE is necessary for sampling with
> replacement.
> sample(0:1,42,TRUE,prob=c(0.25,0.75)) # 1/4 zeroes and 3/4 ones on
> average; the default is equal probabilities.
>
> If you want some non-random structure, or if you want serial dependence
> between the entries
> you need to make your question more explicit.
>
> *Do* read the posting guide!
>
> cheers,
>
> Rolf Turner
>
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>
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>
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