 1 (the default) implies no scaling.</p></dd>


<dt>nugget_type</dt>
<dd><p>The nugget covariance function type. Available options
include <code>"nugget"</code> or <code>"none"</code>.</p></dd>


<dt>nugget</dt>
<dd><p>The spatially independent (not correlated) random error variance. Commonly referred to as
a nugget.</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>A list with two elements: <code>initial</code> and <code>is_known</code>.
<code>initial</code> is a named numeric vector i