>, pch <span class="op">=</span> <span class="fl">20</span>, col <span class="op">=</span> <span class="st">"blue"</span><span class="op">)</span></span></span>
<span class="r-plt img"><img src="interpBarnes-2.png" alt="" width="700" height="700"></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># 3. As 1, but interpolate back to points, and display the percent mismatch</span></span></span>
<span class="r-in"><span><span class="va">u</span> <span class="op">&lt;-</spa