stwin: Create a space-time window
In stppResid: Perform residual analysis on space-time point process models.

Description Usage Arguments Details Value Author(s) See Also Examples

stwin creates an object of class “stwin” representing a three-dimensional space-time window.

1	stwin(xcoord = c(0, 1), ycoord = c(0, 1), tcoord = c(0, 1))

`xcoord`	A vector of x coordinate limits.
`ycoord`	A vector of y coordinate limits.
`tcoord`	A vector of t coordinate limits.

To create a space-time point process object of class “stpp”, an enclosing space-time window of class “stwin” must be created and passed to stpp.

The window must be box shaped. Each vector of coordinates must be of length two and ordered from smallest to largest. Every combination of the entries of the three vectors represents the 8 corners of the space-time window.

If no coordinates are given, the default is a unit cube.

Outputs an object of class “stwin” describing a three-dimensional space-time cuboid, which is a list of

`xcoord`	A vector of x limits.
`ycoord`	A vector of y limits.
`tcoord`	A vector of t limits.

Robert Clements

stpp

#===> create a stpp object <===#
x <- rnorm(30, mean = 10, sd = 1)
y <- rnorm(30, mean = 100, sd = 10)
t <- runif(30, 0, 100)
stw <- stwin(xcoord = c(0, 20), ycoord = c(50, 150), tcoord = c(0, 100))
X <- stpp(x, y, t, stw = stw)

#===> create a stpp object from redbanana data <===#
data(redbanana)
attach(redbanana)
xcoord <- c(min(longitude)-.01, max(longitude)+.01)
ycoord <- c(min(latitude)-.01, max(latitude)+.01)
tcoord <- c(0, max(birth)+.01)
stw <- stwin(xcoord, ycoord, tcoord)
X <- stpp(longitude, latitude, birth, stw)