David.
On Nov 27, 2009, at 3:47 PM, T.D.Rudolph wrote:
>
> On Thu, Nov 26, 2009 at 6:56 PM, David Winsemius <dwinsemius at comcast.net
> >
> wrote:
>
> <The situation that I see (after looking at the documentation for
> adehabit)
> is that for some as yet <unarticulated reason, you have decided that
> the
> methods used in prior publications in your domain are <not the best
> and you
> are going to invent new ones,
>
> There is nothing particularly cutting edge about wanting to estimate
> home
> range size from a utilization distribution - Worton (1987, 1989)
> applied
> kernel methods to estimate the UD and specifically home range size
> over 20
> years ago. Based on the literature (Gitzen et al. 2006) and the
> spatial
> distribution of my data, it is reasonable to conclude the plug-in
> method of
> bandwidth selection is the best possible option.
>
> <but you are as yet unable to provided a detailed specification or
> offer an
> implementation of the <methods. Furthermore, you are unable even to
> manipulate the objects you have thus far created in <service toward
> this
> effort.
>
> I never said I was a programmer. I simply asked if there was a way to
> convert a kde object into a spatial object (e.g. SpatialPixels,
> SpatialPolygons) for export into a GIS. Or, alternatively, to
> generate the
> 2-D spatial area underneath the 3-D utilisation distribution of a kde
> object.
>
> <I am being somewhat harsh in my assessment because it seems that
> you really
> need is a statistical <collaborator with whom you can bang ideas
> together
> and arrive, first at a more detailed rationale and <plan, and then a
> forward
> effort using your data and his programming expertise to demonstrate
> the
> <superiority of your method. That would seem to be most reasonably a
> joint
> effort with joint authorship <as an outcome.
>
> Perhaps you are speculating beyond what is warranted under the
> circumstances. I'm sure this is well-intentioned, but perhaps it is
> not as
> appropriate as you would have wished.
>
> Tyler
> --
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>
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> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT