covmod.summary.list

This is a list of 5 simulation summaries. Data were generated using a systematic line transect 
 design and a mixture of two half normal detection functions describing detectability, one for 
 males and one for females. Each of the five simulation summaries corresponds to a different 
 analysis truncation distance when fitting the detection function model in which detectability
 was modelled as a function of sex. These simulations investigate whether truncation distance 
 affects the accuracy and precision of the estimates of abundance 
 / density.

datasets

Performs distance sampling simulations.It repeatedly generates
instances of a user defined population within a given survey region, generates
realisations of a survey design (currently these must be generated using
Distance software in advance <http://distancesampling.org/>) and simulates
the detection process. The data are then analysed so that the results can
be compared for accuracy and precision across all replications. This will
allow users to select survey designs which will give them the best accuracy
and precision given their expectations about population distribution. Any
uncertainty in population distribution or population parameters can be
included by running the different survey designs for a number of different
population descriptions. An example simulation can be found in the help file for
make.simulation.

Laura Marshall

DSsim

Distance Sampling Simulations

covmod.summary.list function

The format is: List of 5<dl class="dl-horizontal">
 <dt><code>t200</code></dt><dd>a simulation summary (truncation = 200)</dd>
 <dt><code>t400</code></dt><dd>a simulation summary (truncation = 400)</dd>
 <dt><code>t600</code></dt><dd>a simulation summary (truncation = 600)</dd>
 <dt><code>t800</code></dt><dd>a simulation summary (truncation = 800)</dd>
 <dt><code>t1000</code></dt><dd>a simulation summary (truncation = 1000)</dd>
 </dl>

Format

Covariate Truncation Simulation Summaries — covmod.summary.list

The format is: List of 5<dl class='dl-horizontal'>
 <dt><code>t200</code></dt><dd>a simulation summary (truncation = 200)</dd>
 <dt><code>t400</code></dt><dd>a simulation summary (truncation = 400)</dd>
 <dt><code>t600</code></dt><dd>a simulation summary (truncation = 600)</dd>
 <dt><code>t800</code></dt><dd>a simulation summary (truncation = 800)</dd>
 <dt><code>t1000</code></dt><dd>a simulation summary (truncation = 1000)</dd>
 </dl>

covmod.summary.list: Covariate Truncation Simulation Summaries

Description

Usage

Arguments

Format

Examples