">## [1,]    1    0    0    0</span></span>
<span><span class="co">## [2,]    0    1    0    0</span></span>
<span><span class="co">## [3,]    0    0    1    0</span></span>
<span><span class="co">## [4,]    0    0    0    1</span></span></code></pre>
<div class="sourceCode" id="cb14"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="https://rdrr.io/r/base/colnames.html" class="external-link">colnames</a></span><span class="op">(</span><span class="va">Z</span><sp