On Jun 23, 2009, at 1:29 PM, Peter Biber wrote:
Thanks David,
Actually, I googled quite some time before posting my question. I'm
also
aware, that there are many packages for spatial data analysis.
However, I
found no hint if any of them contains methods for characterizing
(and I
don't mean just plotting) the distribution (e.g. pure random,
clustered,
regular) of grid cells (not point data) with R.
I someone out there has used R for similar tasks, I still would
appreciate
his/her hints/comments.
I still cannot tell what sort of methods you have considered and
rejected. I would have thought that any process examined on a computer
would be done on a "regular grid". Points are an abstract concept,
grids are the implemented reality. I would have thought that notions
of 2D density, which are undoubtedly present in every introductory
source regarding spatial analysis, would be the obvious first pass at
answering your question. Apparently you are not looking for density
estimates?
-----Ursprüngliche Nachricht-----
Von: David Winsemius [mailto:dwinsem...@comcast.net]
Gesendet: Dienstag, 23. Juni 2009 16:47
An: Peter Biber
Cc: r-help@r-project.org
Betreff: Re: [R] Spatial Statistics on Grids
On Jun 23, 2009, at 10:21 AM, Peter Biber wrote:
Dear colleagues,
I'm searching for methods to analyze spatial distributions of cells
with certain properties in a regular grid. For instance, consider a
grid, where a part of the cells have the property "0", and the others
have the property "1". I'm looking for statistics I could use for
characterizing the spatial distribution of the "1-cells".
Does anyone know about R-packages, where such methods are
implemented?
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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