title: Display time in hrs and minutes format using lubridate package in R : Dataframe Issue
body: <p>When I am trying change the data format of time to <strong>Hrs and Minutes</strong>. I am able to achieve it using <strong>lubridate</strong> package in R. The function i am using is <strong>hm()</strong>. However, when I try to print it in console it works just fine as mentioned below, But If I view my <strong>dataframe I do not see H M S format at all</strong>, all I get is bunch of 0s. I am using RStudio.</p>
  
  <pre><code>d1$cr_hr &lt;- hm(d1$cr_time)
  tail(d1$cr_hr,10)
  ## [1] "16H 11M 0S" "16H 14M 0S" "16H 15M 0S" "16H 17M 0S" "16H 19M 0S" "16H 22M 0S" "16H 25M 0S"
  ## [8] "16H 27M 0S" "16H 29M 0S" "16H 33M 0S"
  
  tail(d1$cr_time)
  [1] "16:19" "16:22" "16:25" "16:27" "16:29" "16:33"
  </code></pre>