title: displaying all the rows and columns of tibble in R-markdown
body: <p>I'm working on an R markdown file. The results of analysis are shown in the form of <code>tibble</code> but in order to see all the columns and rows, I need to click to expand. However, since I'm going to knit the file into html, I need to display all the columns and rows in the R markdown file. I did a search and came up with the following codes:</p>
  
  <pre><code>options(tibble.width = Inf) # displays all columns.
  options(tibble.print_max = Inf) # to show all the rows.
  </code></pre>
  
  <p>However, I don't know where to put them. I placed them before and after my code, but it didn't work. MY codes are:</p>
  
  <ol>
  <li><code>head(df)</code></li>
  <li><code>summarise(mean_cov= ..., median_cov=...., sd_cov=...., ...)</code></li>
  </ol>
  
  <p>Thanks.</p>