       1.5         0.2    setosa
#&gt;   5:          1.4         0.2    setosa
#&gt;  ---                                   
#&gt; 146:          5.2         2.3 virginica
#&gt; 147:          5.0         1.9 virginica
#&gt; 148:          5.2         2.0 virginica
#&gt; 149:          5.4         2.3 virginica
#&gt; 150:          5.1         1.8 virginica</div><div class='input'><span class='no'>iris</span> <span class='kw'>%&gt;%</span> <span class='fu'>select_dt</span>(<span class='kw'>cols</span> <sp