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jhudsl · Jan 12, 2024 · 25ff378 · 25ff378
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diff --git a/help.html b/help.html
@@ -394,16 +394,16 @@ <h2><strong>Why are my changes not taking effect? It’s making my results
 <p>Here we are creating a new object from an existing one:</p>
 <pre class="r"><code>new_rivers &lt;- sample(rivers, 5)
 new_rivers</code></pre>
-<pre><code>## [1] 652 290 410 286 255</code></pre>
+<pre><code>## [1] 445 735 430 425 652</code></pre>
 <p>Using just this will only print the result and not actually change
 <code>new_rivers</code>:</p>
 <pre class="r"><code>new_rivers + 1</code></pre>
-<pre><code>## [1] 653 291 411 287 256</code></pre>
+<pre><code>## [1] 446 736 431 426 653</code></pre>
 <p>If we want to modify <code>new_rivers</code> and save that modified
 version, then we need to reassign <code>new_rivers</code> like so:</p>
 <pre class="r"><code>new_rivers &lt;- new_rivers + 1
 new_rivers</code></pre>
-<pre><code>## [1] 653 291 411 287 256</code></pre>
+<pre><code>## [1] 446 736 431 426 653</code></pre>
 <p>If we forget to reassign this can cause subsequent steps to not work
 as expected because we will not be working with the data that has been
 modified.</p>
@@ -473,7 +473,7 @@ <h2><strong>Error: object ‘X’ not found</strong></h2>
 operator:</p>
 <pre class="r"><code>rivers2 &lt;- new_rivers + 1
 rivers2</code></pre>
-<pre><code>## [1] 654 292 412 288 257</code></pre>
+<pre><code>## [1] 447 737 432 427 654</code></pre>
 <hr />
 </div>
 <div id="error-unexpected-in-error-unexpected-in-error-unexpected-x-in"

diff --git a/modules/Data_Classes/Data_Classes.html b/modules/Data_Classes/Data_Classes.html
@@ -3666,22 +3666,23 @@ <h1 data-config-title><!-- populated from slide_config.json --></h1>
 
 <p><code>as.matrix()</code> creates a matrix from a data frame or tibble (where all values are the same class).</p>
 
-<pre class = 'prettyprint lang-r'>head(iris, n = 3)</pre>
+<pre class = 'prettyprint lang-r'>circ_mat &lt;- select(circ, contains(&quot;orange&quot;)) %&gt;%
+  head(n = 3)
+circ_mat</pre>
 
-<pre >##   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
-## 1          5.1         3.5          1.4         0.2  setosa
-## 2          4.9         3.0          1.4         0.2  setosa
-## 3          4.7         3.2          1.3         0.2  setosa</pre>
+<pre >## # A tibble: 3 × 3
+##   orangeBoardings orangeAlightings orangeAverage
+##             &lt;dbl&gt;            &lt;dbl&gt;         &lt;dbl&gt;
+## 1             877             1027          952 
+## 2             777              815          796 
+## 3            1203             1220         1212.</pre>
 
-<pre class = 'prettyprint lang-r'>iris_mat &lt;- select(iris, -Species) %&gt;%
-  tibble() %&gt;%
-  head(n = 3)
-as.matrix(iris_mat)</pre>
+<pre class = 'prettyprint lang-r'>as.matrix(circ_mat)</pre>
 
-<pre >##      Sepal.Length Sepal.Width Petal.Length Petal.Width
-## [1,]          5.1         3.5          1.4         0.2
-## [2,]          4.9         3.0          1.4         0.2
-## [3,]          4.7         3.2          1.3         0.2</pre>
+<pre >##      orangeBoardings orangeAlightings orangeAverage
+## [1,]             877             1027         952.0
+## [2,]             777              815         796.0
+## [3,]            1203             1220        1211.5</pre>
 
 </article></slide><slide class=""><hgroup><h2>Matrices</h2></hgroup><article  id="matrices-1">