1-Dimensional Homogeneous Poisson example.
Point data and count data, together with intensity function and expected counts for a homogeneous 1-dimensional Poisson process example.
data(Poisson1_1D)
The data contain the following R
objects:
lambda1_1D
:A function defining the intensity function of a nonhomogeneous Poisson process. Note that this function is only defined on the interval (0,55).
E_nc1
The expected counts of the gridded data.
pts1
The locations of the observed points (a data frame with one column, named x
).
countdata1
A data frame with three columns, containing the count data:
x
The grid cell midpoint.
count
The number of detections in the cell.
exposure
The width of the cell.
library(ggplot2) data(Poisson1_1D) ggplot(countdata1) + geom_point(data = countdata1, aes(x = x, y = count), col = "blue") + ylim(0, max(countdata1$count)) + geom_point(data = pts1, aes(x = x), y = 0.2, shape = "|", cex = 4) + geom_point( data = countdata1, aes(x = x), y = 0, shape = "+", col = "blue", cex = 4 ) + xlab(expression(bold(s))) + ylab("count")
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