title: Multiple boxplots using ggplot
body: <p>I have a dataframe that looks like the one attached, with 6 columns and 1000 rows (tab separated). The column headings (0,30,60,120,240 and 360) are a time series (with 0 representing 0 mins, 30 meaning 30 mins and so on). I'd like to create 6 boxplots corresponding to the columns using ggplot2 in a single plot, keeping in mind that they need to be spaced based on the time difference. It seems I would need to melt the columns, but cant figure out a way to do so. Any help would be much appreciated.</p>
  
  <pre><code>        0       30       60       120      240     360
  1       1       NA       NA       NA       1       1
  2       NA      NA       NA       NA       NA      NA
  3       NA      NA       1        1        1       1
  4       0.5     0.21     0.15     1        0.38    0.8
  5       0.63    1        0.86     0.85     0.94    0.91
  </code></pre>