rThomas_rcpp

Usually used internally inside <code>sim_thomas_coords</code>
This function randomly draws points (individuals) around one or several mother points using Rcpp.
The function is an efficient re-implementation of the rThomas function from the spatstat package.

Simulation, analysis and sampling of spatial
biodiversity data (May, Gerstner, McGlinn, Xiao & Chase 2017)
<doi:10.1111/2041-210x.12986>.
In the simulation tools user define the numbers of
species and individuals, the species abundance distribution and species
aggregation. Functions for analysis include species rarefaction
and accumulation curves, species-area relationships and the distance
decay of similarity.

Felix May

mobsim

Spatial Simulation and Scale-Dependent Analysis of Biodiversity
Changes

Alban Sagouis

rThomas_rcpp function

<dl><dt>n_points</dt>
<dd>The total number of points (individuals).</dd>
<dt>n_mother_points</dt>
<dd>Number of mother points (= cluster centres).</dd>
<dt>xmother</dt>
<dd>Vector of <code>n_mother_points</code> x coordinates for the mother points.</dd>
<dt>ymother</dt>
<dd>Vector of <code>n_mother_points</code> y coordinates for the mother points.</dd>
<dt>sigma</dt>
<dd>Mean displacement (along each coordinate axes) of a point from
its mother point (= cluster centre).</dd>
<dt>xmin</dt>
<dd>Left limit, <code>default</code>=0.</dd>
<dt>xmax</dt>
<dd>Right limit, <code>default</code>=1.</dd>
<dt>ymin</dt>
<dd>Bottom limit, <code>default</code>=0.</dd>
<dt>ymax</dt>
<dd>Top limit, <code>default</code>=1.</dd></dl>

Arguments

Author

Thomas process individual distribution simulation for one species — rThomas_rcpp

<dl>

<dt>n_points</dt>
<dd>The total number of points (individuals).</dd>


<dt>n_mother_points</dt>
<dd>Number of mother points (= cluster centres).</dd>


<dt>xmother</dt>
<dd>Vector of <code>n_mother_points</code> x coordinates for the mother points.</dd>


<dt>ymother</dt>
<dd>Vector of <code>n_mother_points</code> y coordinates for the mother points.</dd>


<dt>sigma</dt>
<dd>Mean displacement (along each coordinate axes) of a point from
its mother point (= cluster centre).</dd>


<dt>xmin</dt>
<dd>Left limit, <code>default</code>=0.</dd>


<dt>xmax</dt>
<dd>Right limit, <code>default</code>=1.</dd>


<dt>ymin</dt>
<dd>Bottom limit, <code>default</code>=0.</dd>


<dt>ymax</dt>
<dd>Top limit, <code>default</code>=1.</dd>

</dl>

rThomas_rcpp: Thomas process individual distribution simulation for one species

Description

Value

Arguments

Author