dists

is.dists

Advanced Use Only. This low-level function creates an object of class
"dists" from raw numerical data.

The adapted pair correlation function transfers the concept of the
pair correlation function from point patterns to patterns of objects of
finite size and irregular shape (e.g. lakes within a country). The pair
correlation function describes the spatial distribution of objects, e.g.
random, aggregated or regularly spaced. This is a reimplementation of the
method suggested by Nuske et al. (2009) <doi:10.1016/j.foreco.2009.09.050>
using the library 'GEOS'.

Robert Nuske

apcf

Adapted Pair Correlation Function

dists function

<dl><dt>df</dt>
<dd>A data frame with the columns <code>sim</code>, <code>dist</code>, and <code>ratio</code>
containing an indicator of the model run (0:n_sim), distances between
the objects of the patterns, and the ratios of a buffer with distance
<code>dist</code> inside the study area (needed for Ripley's edge correction).</dd>
<dt>area</dt>
<dd>size of the study area in square units</dd>
<dt>n_obj</dt>
<dd>number of objects in the pattern</dd>
<dt>max_dist</dt>
<dd>maximum distance to be measured in pattern</dd>
<dt>obj</dt>
<dd>an R object, preferably of class <code>dists</code></dd></dl>

Arguments

Class dists: Collection of Distances and Ratios — dists

<dl>

<dt>df</dt>
<dd>A data frame with the columns <code>sim</code>, <code>dist</code>, and <code>ratio</code>
containing an indicator of the model run (0:n_sim), distances between
the objects of the patterns, and the ratios of a buffer with distance
<code>dist</code> inside the study area (needed for Ripley's edge correction).</dd>


<dt>area</dt>
<dd>size of the study area in square units</dd>


<dt>n_obj</dt>
<dd>number of objects in the pattern</dd>


<dt>max_dist</dt>
<dd>maximum distance to be measured in pattern</dd>


<dt>obj</dt>
<dd>an R object, preferably of class <code>dists</code></dd>

</dl>

dists: Class dists: Collection of Distances and Ratios

Description

Usage

Value

Arguments