Message-ID: <DB9BF669-5488-46C6-B31F-98178ACF8D8C@auckland.ac.nz>
Date: 2008-12-02T01:52:46Z
From: Rolf Turner
Subject: Spatstat - K2 index
In-Reply-To: <1D20D24F37AD4843B03A393BE6597BB2750A01@VUIEXCHC.ad.nottingham.ac.uk>
On 2/12/2008, at 4:30 AM, Gough Lauren wrote:
> Hi all,
>
> I'm using spatstat to investigate the spatial structure of an arid
> shrub
> population. The first-order intensity of my data does not appear
> to be
> homogenous, so I would like to use inhomogeneous techniques. I
> realise
> there is a inhomogeneous K-function available in spatstat, but there
> doesn't not appear to be one for the pair-correlation function (O-ring
> statistic). As such I was planning to use a new technique (the K2
> index) as described in Schiffers et al. (2008) [Ecography,
> 31:545-555].
> The following website has more detail
> [http://www.oikos.ekol.lu.se/appendixdown/E5374-example.R]. Despite
> this I cannot get the function to run! I am not very familiar with
> R so
> it is likely my problem is simple. Does anyone have any experience
> with
> the K2-index who can give me some pointers?
In the first instance questions about a contributed package should be
directed
to the maintainer(s) of that package.
It is not clear to me what your question is. Can't get ***what***
function
to run? The file E5374-example.R sources ``Funktionen/K2.R'' to provide
the function K2, which is called upon later in this script. Have you
obtained
the file K2.R? If not, that is your first problem.
cheers,
Rolf Turner
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