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      <img src="" class="logo" alt=""><h1>Convert neighbor or weights list to matrix</h1>
      <small class="dont-index">Source: <a href="https://github.com/josiahparry/sfdep/blob/HEAD/R/as_matrix.R" class="external-link"><code>R/as_matrix.R</code></a></small>
      <div class="d-none name"><code>wt_as_matrix.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>Given a <code>nb</code> list or weights list, convert them to a matrix.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">wt_as_matrix</span><span class="op">(</span><span class="va">nb</span>, <span class="va">wt</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">nb_as_matrix</span><span class="op">(</span><span class="va">nb</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
    <dl><dt>nb</dt>
<dd><p>a neighbor list—i.e. as created by <code><a href="st_contiguity.html">st_contiguity()</a></code>.</p></dd>


<dt>wt</dt>
<dd><p>a weights list—i.e. as created by <code><a href="st_weights.html">st_weights()</a></code></p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    

<p>Returns a n x n matrix</p>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># make a grid</span></span></span>
<span class="r-in"><span><span class="va">g</span> <span class="op">&lt;-</span> <span class="fu">sf</span><span class="fu">::</span><span class="fu"><a href="https://r-spatial.github.io/sf/reference/st_make_grid.html" class="external-link">st_make_grid</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>  cellsize <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">10</span>, <span class="fl">10</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>  offset <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">0</span>, <span class="fl">0</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>  n <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">2</span>, <span class="fl">2</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># create neighbors</span></span></span>
<span class="r-in"><span><span class="va">nb</span> <span class="op">&lt;-</span> <span class="fu"><a href="st_contiguity.html">st_contiguity</a></span><span class="op">(</span><span class="va">g</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># cast to matrix</span></span></span>
<span class="r-in"><span><span class="fu">nb_as_matrix</span><span class="op">(</span><span class="va">nb</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   [,1] [,2] [,3] [,4]</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1    0    1    1    1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2    1    0    1    1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3    1    1    0    1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 4    1    1    1    0</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> attr(,"call")</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> spdep::nb2mat(neighbours = nb, style = "B")</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># create weights</span></span></span>
<span class="r-in"><span><span class="va">wt</span> <span class="op">&lt;-</span> <span class="fu"><a href="st_weights.html">st_weights</a></span><span class="op">(</span><span class="va">nb</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># cast as matrix</span></span></span>
<span class="r-in"><span><span class="fu">wt_as_matrix</span><span class="op">(</span><span class="va">nb</span>, <span class="va">wt</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>           [,1]      [,2]      [,3]      [,4]</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1,] 0.0000000 0.3333333 0.3333333 0.3333333</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [2,] 0.3333333 0.0000000 0.3333333 0.3333333</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [3,] 0.3333333 0.3333333 0.0000000 0.3333333</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [4,] 0.3333333 0.3333333 0.3333333 0.0000000</span>
<span class="r-in"><span></span></span>
</code></pre></div>
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