>
> One of the replies suggested using the Strauss process. This does not
> produce clumps. You can get weakly clumped point patterns from the Geyer
> process and some of the other Gibbs processes offered in 'rmh', but in general
> this is not the best way to create clumps.
>
> Hope this helps
Dear Terry
the R package 'spatstat' contains a large number of functions for
generating point patterns with varying degrees of randomness or orderliness.
They include:
rpoint n independent random points
rpoispprandom number of independent random points
rs
Beutel, Terry S wrote:
>
> I am trying to generate two dimensional random coordinates.
>
> For randomly distributed data I have simply used
>
> >xy<-cbind(runif(100),runif(100))
>
> However I also want to generate coordinates that are more uniformly
> distributed, and coordinates that ar
Perhaps you're looking for something along the lines of Sobol
sequences - refer Section 7.7 of Numerical Recipes in C by Press et
al.
Sean
On 18/05/06, Ben Bolker <[EMAIL PROTECTED]> wrote:
> Beutel, Terry S dpi.qld.gov.au> writes:
>
> >
> > I am trying to generate two dimensional random coordin
Beutel, Terry S dpi.qld.gov.au> writes:
>
> I am trying to generate two dimensional random coordinates.
>
> For randomly distributed data I have simply used
>
> >xy<-cbind(runif(100),runif(100))
>
> However I also want to generate coordinates that are more uniformly
> distributed, and coordi
Hi,
If you are looking for data clustered in two dimenstions you can use the
multivariate normal package.
Ritwik Sinha
http://darwin.cwru.edu/~rsinha
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Dear Terry,
I'm not entirely sure if this is what you're looking for, but here's my
suggestion.
To make more uniformly distributed points, you might try something like
xy <- expand.grid(list(seq(0,1,.1), seq(0,1,.1)))
plot(jitter(xy[,1], 1.5), jitter(xy[,2], 1.5))
Like I said, I don't know if th
I am trying to generate two dimensional random coordinates.
For randomly distributed data I have simply used
>xy<-cbind(runif(100),runif(100))
However I also want to generate coordinates that are more uniformly
distributed, and coordinates that are more contagiously distributed than
the abov
