uhc_issf_locs

Simulated iSSF location data for demonstrating UHC plots

datasets

Manage and analyze animal movement data. The functionality of
'amt' includes methods to calculate home ranges, track statistics
(e.g. step lengths, speed, or turning angles), prepare data for
fitting habitat selection analyses, and simulation of space-use from
fitted step-selection functions.

Johannes Signer

Animal Movement Tools

Brian Smith

Bjoern Reineking

Ulrike Schlaegel

John Fieberg

Josh O'Brien

Bernardo Niebuhr

Alec Robitaille

Avgar Tal

Scott LaPoint

uhc_issf_locs function

A <code>data.frame</code> with 371 rows and 3 variables:<dl>
<dt>x</dt>
<dd>x-coordinate in UTM Zone 12 (EPSG: 32612)</dd><dt>y</dt>
<dd>Y-coordinate in UTM Zone 12 (EPSG: 32612)</dd><dt>t</dt>
<dd>timestamp of location (timezone "US/Mountain")</dd>
</dl>These data were simulated assuming an movement model, i.e., iSSA.
True movement-free habitat selection parameter values are:<ul>
<li><code>forage</code> = log(8)/500 (resource)</li>
<li><code>temp^2</code> = -1 * log(8)/36 (condition; quadratic term)</li>
<li><code>temp</code> = (log(8)/36) * 26 (condition; linear term)</li>
<li><code>pred</code> = log(0.2)/5 (risk)</li>
<li><code>cover == "forest"</code> = log(2) (grassland is intercept)</li>
<li><code>cover == "wetland"</code> = log(1/2) (grassland is intercept)</li>
<li><code>dist_to_cent</code> = -1 * log(10)/500 (keeps trajectory away from boundary)</li>
</ul>Note: <code>temp</code> is modeled as a quadratic term, with the strongest selection
occurring at 13 °C and all other temperatures less selected.
Note: <code>dist_to_water</code> and <code>rand</code> have no real effect
on our animal's selection and are included for demonstration purposes.
True selection-free movement distributions are:<ul>
<li>Step length: <code>gamma(shape = 3, scale = 25)</code></li>
<li>Turn angle: <code>vonMises(mu = 0, kappa = 0.5)</code></li>
</ul>

Format

Simulated iSSF location data for demonstrating UHC plots — uhc_issf_locs

A <code>data.frame</code> with 371 rows and 3 variables:<dl>
<dt>x</dt>
<dd>x-coordinate in UTM Zone 12 (EPSG: 32612)</dd>

<dt>y</dt>
<dd>Y-coordinate in UTM Zone 12 (EPSG: 32612)</dd>

<dt>t</dt>
<dd>timestamp of location (timezone "US/Mountain")</dd>


</dl>

These data were simulated assuming an movement model, i.e., iSSA.
True movement-free habitat selection parameter values are:<ul>
<li><code>forage</code> = log(8)/500 (resource)</li>
<li><code>temp^2</code> = -1 * log(8)/36 (condition; quadratic term)</li>
<li><code>temp</code> = (log(8)/36) * 26 (condition; linear term)</li>
<li><code>pred</code> = log(0.2)/5 (risk)</li>
<li><code>cover == "forest"</code> = log(2) (grassland is intercept)</li>
<li><code>cover == "wetland"</code> = log(1/2) (grassland is intercept)</li>
<li><code>dist_to_cent</code> = -1 * log(10)/500 (keeps trajectory away from boundary)</li>
</ul>

Note: <code>temp</code> is modeled as a quadratic term, with the strongest selection
occurring at 13 °C and all other temperatures less selected.
Note: <code>dist_to_water</code> and <code>rand</code> have no real effect
on our animal's selection and are included for demonstration purposes.
True selection-free movement distributions are:<ul>
<li>Step length: <code>gamma(shape = 3, scale = 25)</code></li>
<li>Turn angle: <code>vonMises(mu = 0, kappa = 0.5)</code></li>
</ul>

Simulated iSSF location data for demonstrating UHC plots

uhc_issf_locs: Simulated iSSF location data for demonstrating UHC plots

Description

Usage

Arguments

Format