get_geodist

Create a distance matrix based on coordinates and a raster layer.
The output is a distance matrix where rows represent cells on the landscape
and columns represent individual locations on the landscape. Each value is
the geographic distance between each individual and each cell calculated
using <a href="https://r-spatial.github.io/sf/reference/geos_measures.html">st_distance</a>. This matrix is used by circle_gd.
If coords_only = TRUE, the result is a distance matrix for the sample coordinates
only.

Generate continuous maps of genetic diversity using moving windows with options for rarefaction, interpolation, and masking as described in Bishop et al. (2023) <doi:10.1111/2041-210X.14090>.

Anusha Bishop

wingen

Continuous Mapping of Genetic Diversity

Anne Chambers

Ian Wang

get_geodist function

<dl><dt>coords</dt>
<dd>coordinates of samples as sf points, a two-column matrix, or a data.frame representing x and y coordinates (see Details for important information about projections)</dd>
<dt>lyr</dt>
<dd>SpatRaster or RasterLayer for generating distances (not required if coords_only = TRUE)</dd>
<dt>fact</dt>
<dd>aggregation factor to apply to <code>lyr</code> (defaults to 0; note: increasing this value reduces computational time)</dd>
<dt>coords_only</dt>
<dd>whether to return distances only for sample coordinates</dd></dl>

Arguments

Create a distance matrix based on coordinates and a raster layer.
The output is a distance matrix where rows represent cells on the landscape
and columns represent individual locations on the landscape. Each value is
the geographic distance between each individual and each cell calculated
using <a href='https://r-spatial.github.io/sf/reference/geos_measures.html'>st_distance</a>. This matrix is used by circle_gd.
If coords_only = TRUE, the result is a distance matrix for the sample coordinates
only.

Get a matrix of geographic distances for circle_gd — get_geodist

<dl>

<dt>coords</dt>
<dd>coordinates of samples as sf points, a two-column matrix, or a data.frame representing x and y coordinates (see Details for important information about projections)</dd>


<dt>lyr</dt>
<dd>SpatRaster or RasterLayer for generating distances (not required if coords_only = TRUE)</dd>


<dt>fact</dt>
<dd>aggregation factor to apply to <code>lyr</code> (defaults to 0; note: increasing this value reduces computational time)</dd>


<dt>coords_only</dt>
<dd>whether to return distances only for sample coordinates</dd>

</dl>

get_geodist: Get a matrix of geographic distances for circle_gd

Description

Usage

Value

Arguments

Examples