spbal (version 1.0.1)

BoundingBox: Create a bounding box for a study region.

Description

Randomly generate a seed from 10,000 possible values in right now 2 dimensions. Note that in van Dam-Bates et al. (2018) we required that the random seed falls into main object shape, such as one of the islands in New Zealand, or within marine environment for BC west coast. However, with a random rotation, we are able to ignore that detail. If this function is used without a random rotation, we recommend running it until the first master sample point does indeed fall within the largest scale of the master sample use.

Usage

BoundingBox(shapefile, d = 2, rotate = FALSE, verbose = FALSE)

Value

bounding box for a study area.

Arguments

shapefile

Spatial feature that defines the boundary of the area to define a bounding box over.

d

Dimension of the new Master Sample, at this stage we only work with d=2.

rotate

Boolean of whether or not to randomly rotate the bounding box. This parameter is not supported at this time.

verbose

Print the rotation and random seed when it is generated.

Author

This function was first written by Paul van Dam-Bates for the package BASMasterSample and later ported to this package, spbal.

Examples

# Create a bounding box for the Gates, North Carolina study area -------------
# Use the North Carolina shapefile supplied in the sf R package.
shp_file <- sf::st_read(system.file("shape/nc.shp", package="sf"))
shp_gates <- shp_file[shp_file$NAME == "Gates",]
# Vertically aligned master sample bounding box.
bb <- spbal::BoundingBox(shapefile = shp_gates)
bb