title: paste(x,collapse="\n") doesn't work? (R code)
body: <p>Hope someone can help me understand this basic anomaly of line separation:</p>
  
  <pre><code>a&lt;-c("a","b","c") 
  a
  # [1] "a" "b" "c"
  paste(a,collapse="\n")
  # [1] "a\nb\nc"
  </code></pre>
  
  <p>basically, I have a data frame like:</p>
  
  <pre><code>       a  b
  1      6  228
  2     10  148
  3     20  124
  4     34  165
  5    100  165
  6    200  165
  7    310  165
  </code></pre>
  
  <p>and I use <code>paste(data_frame_name$b,collapse= "\n")</code>, but I get</p>
  
  <pre><code>[1] "228\n148\n124\n165\n165\n165\n165"
  </code></pre>
  
  <p>What can be the problem? Thanks.</p>