lass='va'>p4</span> <span class='op'>&lt;-</span> <span class='va'>p3</span> <span class='op'>+</span> <span class='fu'><a href='polar_connect.html'>polar_connect</a></span><span class='op'>(</span><span class='va'>data2</span>, <span class='va'>x1</span>, <span class='va'>x2</span><span class='op'>)</span></span>
<span class='r-in'><span class='va'>p4</span></span>
<span class='r-plt img'><img src='polar_init-4.png' alt='' width='700' height='433' /></span>
<span class='r-in'></span>
<span class='r-in'><sp