sight2perpdist {unmarked} | R Documentation |
Convert sight distance and sight angle to perpendicular distance.
Description
When distance data are collected on line transects using sight distances and sight angles, they need to be converted to perpendicular distances before analysis.
Usage
sight2perpdist(sightdist, sightangle)
Arguments
sightdist |
Distance from observer |
sightangle |
Angle from center line. In degrees between 0 and 180. |
Value
Perpendicular distance
See Also
Examples
round(sight2perpdist(10, c(0, 45, 90, 135, 180)))
[Package unmarked version 1.4.1 Index]