title: there is no package called ‘rpart.plot’
body: <p>I am following Titanic Tutorial on DataCamp. After built the decision tree, the plotting for the decision tree just doesn't work, showing an error that </p>
  
  <blockquote>
    <p>there is no package called ‘rpart.plot’</p>
  </blockquote>
  
  <p>Any idea how to fix this?</p>
  
  <p><strong>libraries</strong></p>
  
  <pre><code>library(rattle)
  library(rpart)
  library(RColorBrewer)
  </code></pre>
  
  <p><strong>decision tree</strong></p>
  
  <pre><code>my_tree_two &lt;- rpart(Survived ~ Pclass + Sex + Age + SibSp + Parch + Fare + Embarked, 
                       data = train, 
                       method = 'class')
  fancyRpartPlot(my_tree_two)
  </code></pre>