swaRmverse (version 0.1.1)

add_rel_pos_coords: Relative Position Coordinates

Description

This function calculates the x and y coordinates of a neighbor in the reference frame of the focal individual.

Usage

add_rel_pos_coords(data, focal_heading = c(0, 1))

Value

The input dataframe with additional nnx (nearest neighbor x coordinate) and nny (nearest neighbor y coordinate) columns.

Arguments

data

Dataframe with the bearing angle and distance of each individual to specific neighbors. Column names must include: bangl, nnd.

focal_heading

The heading of the focal individual, default = c(0,1) for plotting neighbor heading north.

Author

Marina Papadopoulou

Examples

data <- data.frame(
bangl = runif(25, 0, pi),
nnd = runif(25)
)
data <- add_rel_pos_coords(data)