title: Count the rows that contain a column where values over or under a certain amount in R
body: <p>In a column I'd like to count the number of rows over or under a certain value. For example I have the following data:</p>
  
  <pre><code> 1  ch1 1.0e+07 0.431105424
   2  ch1 2.0e+07 1.498178994
   3  ch1 3.0e+07 0.862939286
   4  ch1 4.0e+07 0.735167840
   5  ch1 5.0e+07 0.973566728
   6  ch1 6.0e+07 1.772800459
   7  ch1 7.0e+07 0.298531476
   8  ch1 8.0e+07 0.728161969
   9  ch2 9.0e+07 0.768514386
   10 ch2 1.0e+08 1.481997291
   11 ch2 1.1e+08 0.000000000
  </code></pre>
  
  <p>I would like to know how many rows have a value over one for each ch value. Can anyone help</p>