 1  1 1, 2, 3, 4, 5, 6, 7, 8</span>
<span class="r-in"><span><span class="fu">sf_linestring</span><span class="op">(</span> obj <span class="op">=</span> <span class="va">x</span>, x <span class="op">=</span> <span class="fl">1</span>, y <span class="op">=</span> <span class="fl">2</span>, linestring_id <span class="op">=</span> <span class="fl">3</span> <span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   id   geometry</span>
<span class="r-out co"><span class="r