 class="dv">162</span></span></code></pre></div>
<p>This is quite large. We started with 584 town names and reduced that to 162 while there are actually 19 town names. We can measure the quality by counting how often we have more than one official town name in one group:</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode R"><code class="sourceCode r"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true"></a><span class="op">&gt;</span><span class="st"> </span>qual &lt;-<span class="st"> </span>res[,