,cc)[order(runif(n))]
> >
> > If you want many such sets of random assignments to be generated at once
> > you can use a few more rep() calls in the expressions to generate multiple
> > sets in the same way. (Do you actually want the assignments or just the
> > tables?)
t fully specified the distribution you want.
>
> Alan Zaslavsky
> Harvard U
>
> > From: "Zhang Jian" <[EMAIL PROTECTED]>
> > Subject: [R] random sampling with some limitive conditions?
> > To: r-help
> >
> > I want to gain tho
ang Jian" <[EMAIL PROTECTED]>
> Subject: [R] random sampling with some limitive conditions?
> To: r-help
>
> I want to gain thousands of random sampling data by randomizing the
> presence-absence data. Meantime, one important limition is that the row and
> column sums
-Original Message-
> > > From: [EMAIL PROTECTED] [mailto:
> > [EMAIL PROTECTED]
> > > On Behalf Of Zhang Jian
> > > Sent: Saturday, July 07, 2007 12:31 PM
> > > To: r-help
> > > Subject: [R] random sampling with some limitive conditions?
>
ndom sampling method.
On 7/7/07, Daniel Nordlund <[EMAIL PROTECTED]> wrote:
>
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED]
> > On Behalf Of Zhang Jian
> > Sent: Saturday, July 07, 2007 12:31 PM
> > To: r-help
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> On Behalf Of Zhang Jian
> Sent: Saturday, July 07, 2007 12:31 PM
> To: r-help
> Subject: [R] random sampling with some limitive conditions?
>
> I want to gain thousands of random sampling
I want to gain thousands of random sampling data by randomizing the
presence-absence data. Meantime, one important limition is that the row and
column sums must be fixed. For example, the data "tst" is following:
site1 site2 site3 site4 site5 site6 site7 site8 1 0 0 0 1 1 0 0 0 1 1 1 0
1 0 1 1 0
