This data represnts truth with regards to occupancy in the simulated study
area. The probability of occupancy was simulated as ```
pnorm(0, X
+ K alpha, 1, lower=FALSE)
```

, where `K`

and `alpha`

were constructed
from a reduced rank is an ICAR process with precision
(`tau`

) = 0.3 and `gamma = c(-1, 0, 0, 1)`

A data frame with 1600 observations on the following 5 variables.

- site
Site labels

- x
Longitude coordinate

- y
Latitude coordinate

- psi
True probability of occupancy

- psi.fix
The fixed effects portion of the occupancy process map

- occ
True realized occupancy

1 2 3 4 5 6 7 8 | ```
data(occupancyData)
##
## Blue points represent realized occupancy.
##
image(x=seq(0.5,39.5,1), y=seq(0.5,39.5,1), z=t(matrix(occupancyData$psi,40)),
xlab="x", ylab="y", main="Occupancy process with realized occupancy")
points(occupancyData$x[occupancyData$occ==1], occupancyData$y[occupancyData$occ==1],
pch=20, cex=0.25, col="blue")
``` |

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