groupSizes: groupSizes - Group Sizes

In Rdistance: Density and Abundance from Distance-Sampling Surveys

groupSizes - Group Sizes

Description

Extract the group size information from an Rdistance model frame.

Usage

groupSizes(ml, ...)

Arguments

ml

Either a Rdistance 'model frame' or an Rdistance 'fitted object'. Both are of class "dfunc". Rdistance 'model frames' are lists containing components necessary to estimate a distance function, but no estimates. Rdistance 'model frames' are typically produced by calls to parseModel. Rdistance 'fitted objects' are typically produced by calls to dfuncEstim. 'Fitted objects' are 'model frames' with additional components such as the parameters estimates, log likelihood value, convergence information, and the variance- covariance matrix of the parameters.

...

Ignored

Value

A vector containing group sizes contained in the Rdistance model frame or fitted object.

Examples

data("sparrowDf")
sparrowModel <- parseModel( sparrowDf, dist ~ observer )
stats::model.offset(sparrowModel$mf)
groupSizes(sparrowModel)  # same, but future-proof

sparrowModel <- parseModel( sparrowDf
                 , dist ~ observer + groupsize(groupsize) )
groupSizes(sparrowModel)  

Rdistance documentation built on April 12, 2025, 1:12 a.m.