.assignmentMaker

Make probability-of-origin surfaces

internal

This resource provides tools to create, compare, and post-process
spatial isotope assignment models of animal origin. It generates
probability-of-origin maps for individuals based on user-provided tissue and
environment isotope values (e.g., as generated by IsoMAP, Bowen et al. [2013]
<doi:10.1111/2041-210X.12147>) using the framework established in Bowen et al.
(2010) <doi:10.1146/annurev-earth-040809-152429>). The package 'isocat' can then
quantitatively compare and cluster these maps to group individuals by
similar origin. It also includes techniques for applying four approaches
(cumulative sum, odds ratio, quantile only, and quantile simulation) with
which users can summarize geographic origins and probable distance traveled
by individuals. Campbell et al. [2020] establishes several of the functions
included in this package <doi:10.1515/ami-2020-0004>.

Caitlin Campbell

isocat

Isotope Origin Clustering and Assignment Tools

.assignmentMaker function

<dl><dt>.ID</dt>
<dd>ID value or vector of values (for naming assignment model layers). If missing, will count from 1.</dd>
<dt>.isotopeValue</dt>
<dd>Isotope precipitation value or vector of values.</dd>
<dt>.SD_indv</dt>
<dd>error associated with transfer function fit. Value or vector of values. If missing, will assume value of 0.</dd>
<dt>precip_raster</dt>
<dd>precipitation isoscape raster.</dd>
<dt>precip_SD_raster</dt>
<dd>precipitation isoscape standard deviation raster.</dd></dl>

Arguments

Make probability-of-origin surfaces — .assignmentMaker

<dl>

<dt>.ID</dt>
<dd>ID value or vector of values (for naming assignment model layers). If missing, will count from 1.</dd>


<dt>.isotopeValue</dt>
<dd>Isotope precipitation value or vector of values.</dd>


<dt>.SD_indv</dt>
<dd>error associated with transfer function fit. Value or vector of values. If missing, will assume value of 0.</dd>


<dt>precip_raster</dt>
<dd>precipitation isoscape raster.</dd>


<dt>precip_SD_raster</dt>
<dd>precipitation isoscape standard deviation raster.</dd>

</dl>

.assignmentMaker: Make probability-of-origin surfaces

Description

Usage

Arguments