sight2perpdist

When distance data are collected on line transects using sight distances and
sight angles, they need to be converted to perpendicular distances before 
analysis.

Fits hierarchical models of animal abundance and occurrence to data collected using survey methods such as point counts, site occupancy sampling, distance sampling, removal sampling, and double observer sampling. Parameters governing the state and observation processes can be modeled as functions of covariates. References: Kellner et al. (2023) <doi:10.1111/2041-210X.14123>, Fiske and Chandler (2011) <doi:10.18637/jss.v043.i10>.

Ken Kellner

unmarked

Models for Data from Unmarked Animals

Richard Chandler

Ian Fiske

David Miller

Andy Royle

Jeff Hostetler

Rebecca Hutchinson

Adam Smith

Lea Pautrel

Marc Kery

Mike Meredith

Auriel Fournier

Ariel Muldoon

Chris Baker

sight2perpdist function

<dl> <dt>sightdist</dt>
<dd>Distance from observer</dd> <dt>sightangle</dt>
<dd>Angle from center line. In degrees between 0 and 180.</dd></dl>

Arguments

Convert sight distance and sight angle to perpendicular distance. — sight2perpdist

<dl>

 <dt>sightdist</dt>
<dd>Distance from observer</dd>

 <dt>sightangle</dt>
<dd>Angle from center line. In degrees between 0 and 180.</dd>

</dl>

Convert sight distance and sight angle to perpendicular distance.

sight2perpdist: Convert sight distance and sight angle to perpendicular distance.

Description

Usage

Value

Arguments

See Also

Examples