circular2xy: Calculate XY coordinates based on distance and bearing

In ptompalski/UsefulRFunctions: A personal set of R tools.

Description

Function converts distance and bearing into XY coordinates. It is useful to generate stem maps (forestry) based on field data (in forestry usually distance and bearing to a tree from a plot center are collected to define tree locations). Optionally center coordinates of the plot may be provided.

Usage

circular2xy(distance, bearing, center.x = 0, center.y = 0)

Arguments

distance	a vector of distances.
bearing	a vector of bearings, in degrees (0 - 360).
center.x	An x coordinate of a plot center
center.y	An y coordinate of a plot center

Value

a data frame with x and y columns

Examples

d <- runif(10,min = 0.5,max=10)
b <- runif(10,min = 0,max=360)
plot(circular2xy(d,b))
plot(circular2xy(d,b,1000,2500))

ptompalski/UsefulRFunctions documentation built on May 26, 2019, 11:32 a.m.