inside.boxx

0th

Percentile

Test Whether Points Are Inside A Multidimensional Box

Test whether points lie inside or outside a given multidimensional box.

Keywords
spatial, math
Usage
inside.boxx(…, w)
Arguments

Coordinates of points to be tested. One vector for each dimension (all of same length). (Alternatively, a single point pattern object of class "ppx" or its coordinates as a "hyperframe")

w

A window. This should be an object of class boxx, or can be given in any format acceptable to as.boxx().

Details

This function tests whether each of the points (x[i],y[i]) lies inside or outside the window w and returns TRUE if it is inside.

The boundary of the window is treated as being inside.

Normally each argument provided (except w) must be numeric vectors of equal length (length zero is allowed) containing the coordinates of points. Alternatively a single point pattern (object of class "ppx") can be given; then the coordinates of the point pattern are extracted.

Value

Logical vector whose ith entry is TRUE if the corresponding point is inside w.

See Also

boxx, as.boxx

Aliases
  • inside.boxx
Examples
# NOT RUN {
  # Random points in box with side [0,2]
  w <- boxx(c(0,2), c(0,2), c(0,2))

  # Random points in box with side [-1,3]
  x <- runif(30, min=-1, max=3)
  y <- runif(30, min=-1, max=3)
  z <- runif(30, min=-1, max=3)

  # Points falling in smaller box
  ok <- inside.boxx(x, y, z, w=w)

  # Same using a point pattern as argument:
  X <- ppx(data = cbind(x, y, z), domain = boxx(c(0,3), c(0,3), c(0,3)))
  ok2 <- inside.boxx(X, w=w)
# }
Documentation reproduced from package spatstat, version 1.56-1, License: GPL (>= 2)

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