Survey.Design-class

classes

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

Survey.Design-class function

<dl class="dl-horizontal">
<dt><code>design.axis</code></dt><dd>Object of class <code>"numeric"</code>; the angle of
the design axis.</dd></dl><dt><code>spacing</code></dt><dd>Object of class <code>"numeric"</code>; the spacing of
the design.</dd><dt><code>region.obj</code></dt><dd>Object of class <code>"character"</code>; The name of
the region which the survey design has been made for.</dd><dt><code>plus.sampling</code></dt><dd>Object of class <code>"logical"</code>; Whether 
a plus sampling protocol is to be used.</dd><dt><code>path</code></dt><dd>Object of class <code>"character"</code>; Describing the
folder where the shapefiles containing the transects are located.</dd><dt><code>filenames</code></dt><dd>Object of class <code>"character"</code>; stores the 
filenames of the transect shapefiles. These are automatically added
when the object is created using all the files in the specified path.</dd><dt><code>file.index</code></dt><dd>Object of class <code>"numeric"</code>; Keeps track
of which shapefile is to be loaded.</dd>

Survey.Design-class: S4 Class "Survey.Design"

Description

Arguments

Slots

Details

See Also