title: predict.randomForest not found
body: <p>I am using R (RStudio) and the randomForest package. I used the following code:</p>
  
  <pre><code>rf = randomForest(y ~ x1 + x2 +...)
  </code></pre>
  
  <p>Which worked fine. Then I tried to use the <code>predict.randomForest</code> function and ran into a problem. R gave me the following message:</p>
  
  <pre><code>Error: could not find function "predict.randomForest"
  </code></pre>
  
  <p>When I go to the randomForest help page (<code>??randomForest</code>), it shows me that there is such a function as <code>predict.randomForest</code>, and yet I can't call it. What is going on here? I checked to see if there was an update available to the randomForest package and there is none.</p>
  
  <p>Additionally, the plot.randomForest() function is not found either.</p>