defol

Tools to identify, quantify, analyze, and visualize growth
suppression events in tree rings that are often produced by insect
defoliation. Described in Guiterman et al. (2020) <doi:10.1016/j.dendro.2020.125750>.

Chris Guiterman

dfoliatR

Detection and Analysis of Insect Defoliation Signals in Tree
Rings

Ann Lynch

Jodi Axelson

defol function

<dl><dt>year</dt>
<dd>An n-length integer vector of observation years</dd>
<dt>series</dt>
<dd>An n-length factor or character vector of series names</dd>
<dt>gsi</dt>
<dd>An n-length numeric vector of growth suppression index, such as
calculated by <code>gsi()</code></dd>
<dt>ngsi</dt>
<dd>An n-length numeric vector of normalized gsi, such as calculated
by <code>gsi()</code>.</dd>
<dt>defol_status</dt>
<dd>An n-length factor or character vector denoting the
defoliation event status of each year. This uses a controlled vocabulary,
see <code>dfoliatR:::make_defol_status</code> for possible values.</dd></dl>

Arguments

Constructor for S3 defol class — defol

<dl>

<dt>year</dt>
<dd>An n-length integer vector of observation years</dd>


<dt>series</dt>
<dd>An n-length factor or character vector of series names</dd>


<dt>gsi</dt>
<dd>An n-length numeric vector of growth suppression index, such as
calculated by <code>gsi()</code></dd>


<dt>ngsi</dt>
<dd>An n-length numeric vector of normalized gsi, such as calculated
by <code>gsi()</code>.</dd>


<dt>defol_status</dt>
<dd>An n-length factor or character vector denoting the
defoliation event status of each year. This uses a controlled vocabulary,
see <code>dfoliatR:::make_defol_status</code> for possible values.</dd>

</dl>

defol: Constructor for S3 defol class

Description

Usage

Value

Arguments