ls/str.html" class="external-link">str</a></span><span class="op">(</span><span class="va">card</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 'data.frame':	3010 obs. of  34 variables:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ id      : int  2 3 4 5 6 7 8 9 10 11 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ nearc2  : int  0 0 0 1 1 1 1 1 1 1 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  