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Spatial Point Patterns
book

Spatial Point Patterns

by Adrian Baddeley, Ege Rubak, Rolf Turner
November 2015
Intermediate to advanced content levelIntermediate to advanced
828 pages
33h 11m
English
Chapman and Hall/CRC
Content preview from Spatial Point Patterns
Poisson Models 319
The fitted model states that the intensity of gold deposits declines by a factor e
0.1038
= 0.9014 for
every add itional kilometre of d istance from the n earest fault, a nd for a given distance, the intensity
is e
2.754
= 15.71 times higher inside the greenstone outcrop than it is outside the greenstone.
Similarly we could build a n additive model with two factor covariates, such as
> ppm(gor
~
vege + styp, data=gex)
which states that the log intensity of gorilla nesting sites is the sum of a n effect due to vegeta-
tion/cover type and an effect due to slope type. Equivalently the intensity is a vegetation effect
multiplied by a slope effect.
Note that the mode l bei
~
grad + I(grad^2) discussed in Section 9. 3.2 is also an additive
model. ...
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Publisher Resources

ISBN: 9781482210217