within_area {sim2Dpredictr}

Determine Whether Lattice Points are Within or Without a Random Set

Description

Determine whether locations in the image/lattice (from generate.grid) are within or without the union of a random set generated by sim2D_HPPP_coords(). If the Euclidean distance between a lattice location and any 'event' is less than the radius about the 'event', then the location is said to be within the random set. Otherwise, it is without the random set.

Usage

within_area(grid.centers, radii, event.xcoord, event.ycoord)

Arguments

grid.centers

Output from generate.grid() that specifies the coordinates of the lattice locations in native space.

radii

A vector of radii values.

event.xcoord, event.ycoord

Paired vectors specifying the x- and y- coordinates, respectively, of each 'event' from the Poisson process.

Value

A data frame with lattice x- and y- coordinates, and a binary vector where 1 indicates the location is within the random set, and 0 indicates the location is without the random set.