title: Get a character without quotes while still being a character
body: <p>For a dataframe as follows:</p>
  <pre><code>Concentration  Value
  Low            0.21
  Medium         0.85
  Low            0.10
  Low            0.36
  High           2.21
  Medium         0.50
  High           1.85
  </code></pre>
  <p>I want to execute the following function to tranpose the factors of a variable into the columns of the new dataframe.</p>
  <p>This works just fine:</p>
  <pre><code>df &lt;- df %&gt;% 
    group_by(var1) %&gt;% 
    mutate(id = row_number()) %&gt;% 
    pivot_wider(names_from = var1, values_from = var2)
  </code></pre>
  <p>However, (as I'm working in Rshiny), we do not know the name of the variables before-hand, as they are established by the user's of the app selection.
  And we would have one variable called input$num_var_1, which corresponds to &quot;Concentration&quot;.</p>
  <p>As you can see, &quot;Concentration&quot; will make the previous function fail it's purpose as the variable needs to be named without quotation marks.</p>
  <p>This can be achieved in many different ways (noquote(input$num_var_1), cat(input$num_var_1, &quot;\n&quot;)</p>
  <p>However, all this functions change the type of object, from character, to somehthing else (noquote, NULL, etc), and group_by() needs to be used over either a character or a number.</p>
  <p>How can I call for the variable without quotes and without chaging the variable type?</p>