effort: effort - Effort information

In tmcd82070/Rdistance: Density and Abundance from Distance-Sampling Surveys

effort - Effort information

Description

Extract effort information from an Rdistance data frame. Effort is length of line-transects or number of points on point-transects.

Usage

effort(x, ...)

Arguments

x	Either an estimated distance function, output by dfuncEstim, or an Rdistance nested data frame, output by RdistDf.
...	Ignored

Value

A vector containing effort. If line-transects, return is length of transects, with units. If point-transects, return is number of points (integers, no units). Vector length is number of transects. If input is not an RdistDf or estimated distance function, return is NULL.

Examples

data(sparrowDf)
effort(sparrowDf)
fit <- dfuncEstim(sparrowDf, dist ~ 1)
effort(fit)

tmcd82070/Rdistance documentation built on April 13, 2025, 1:38 p.m.