title: ggplot "could not find function"
body: <p><em>New to ggplot</em></p>
  
  <p>I am trying to plot a the dataframe result which looks like this : </p>
  
  <pre><code> County Mean_Porosity_Percent SD_Porosity_Percent
  1    Custer              52.40714            3.807763
  2  Franklin              49.63394            3.642400
  3     Keith              48.46000            5.461044
  4      Knox                   NaN                  NA
  5   Lincoln              53.38125           10.414331
  6    Nemaha              52.97400            2.915541
  7      Otoe              56.45143            1.949730
  8    Seward              53.55875            2.641381
  9   Sherman              55.66250            6.577776
  10  Stanton              57.54750                  NA
  </code></pre>
  
  <p>ggplot code: </p>
  
  <pre><code>ggplot(result, aes(x=County,y=Mean_Porosity_Percent), geom = "bar")
  </code></pre>
  
  <p>Error: could not find function "Mean_Porosity_Percent" </p>