makeMultiMonthIsoscape

Converts a stack of monthly isoscape maps, monthly isoscape standard error
maps, and optionally a precipitation (amount) stack. Each stack must contain
layers corresponding to each of the target months.

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

makeMultiMonthIsoscape function

<dl><dt>iso_stack</dt>
<dd>A RasterStack containing n layers corresponding to isoscape models for n months.</dd>
<dt>iso_se_stack</dt>
<dd>A RasterStack containing n layers corresponding to isoscape standard error maps for n months.</dd>
<dt>precip_stack</dt>
<dd>Either a RasterStack containing n layers corresponding to precipitation amounts for n months, or NULL (assumes equal precipitation amounts.)</dd></dl>

Arguments

Make mean multi-month isoscape and error surfaces. — makeMultiMonthIsoscape

<dl>

<dt>iso_stack</dt>
<dd>A RasterStack containing n layers corresponding to isoscape models for n months.</dd>


<dt>iso_se_stack</dt>
<dd>A RasterStack containing n layers corresponding to isoscape standard error maps for n months.</dd>


<dt>precip_stack</dt>
<dd>Either a RasterStack containing n layers corresponding to precipitation amounts for n months, or NULL (assumes equal precipitation amounts.)</dd>

</dl>

makeMultiMonthIsoscape: Make mean multi-month isoscape and error surfaces.

Description

Usage

Value

Arguments

Details