GEOSTATS: Generating artificial dispersions of points onto landscapes ?
I'm hoping to find some code or ideas that will help me to generate
artificial dispersions of points upon a 2 dimensional landscape, that when
sampled, will match specific negative-binomial distributions.
As background, I'm an entomologist, and my specific aim is to create or generate
a range of "virtual insect infestations" onto a 2 dimensional grid (= a
crop). We plan to then use the resulting distributions to test some
hypotheses about insect damage to individual plants in a field and its
impact on the total crop yield.
I have algorithms for generating lists of variates from negative-binomial
distributions. But I am unsure about how to move these variates onto x,y
coordinates of a 2 dimensional grid. The result must create a dispersion of
points that mimics a potential real distribution of insects. The
distribution must match my specific parameters (m, k) for the
Any help, or pointers, or references to published work would be greatly
Thanks in advance,
Martin L. Dillon http://www.uq.edu.au/~tpmdillo/
CSIRO Division of Entomology Tel: +61 67 991500
PO Box 59 Narrabri NSW 2390 Fax: +61 67 931186
AUSTRALIA E-mail: martind@...
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