On May 10, 2010, at 4:54 PM, Laura S wrote:
Dear all:
I would like to create a landscape of environmental values that
follow a
uniform frequency distribution and also have spatial autocorrelation
in the
landscape.
Perhaps:
X <- distribution on one dimension
Y <- distribution on another dimension
cY <- rho*X +(1-rho)*Y
I was wondering if there is an algorithm and/or package out there
that creates autocorrelation of values that are distributed
according to a
non-normal frequency distribution.
There are several packages with the letters "distr" as a substring.
And there is also at least one package that will assist in creating
copulas.
Any suggestions are greatly appreciated.
Thank you,
Laura
--
" Genius is the summed production of the many with the names of the
few
attached for easy recall, unfairly so to other scientists"
- E. O. Wilson (The Diversity of Life)
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David Winsemius, MD
West Hartford, CT
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.