Help/UnaryOps/atan.html

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  30 <p class="p1"><span class="s1"><b>atan<span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>arctangent</b></p>
  31 <p class="p2"><br></p>
  32 <p class="p1"><b>a.atan</b></p>
  33 <p class="p1"><b>atan(a)</b></p>
  34 <p class="p2"><br></p>
  35 <p class="p2"><br></p>
  36 <p class="p2"><br></p>
  37 <p class="p3"><span class="s2"><a href="../Math/SimpleNumber.html">SimpleNumber</a></span></p>
  38 <p class="p4"><br></p>
  39 <p class="p5">atan(1);</p>
  40 <p class="p5">1.atan;</p>
  41 <p class="p6"><br></p>
  42 <p class="p5">atan(1) == 0.25pi; <span class="s3">// true</span></p>
  43 <p class="p7"><span class="s4">atan(2000.1); </span>// any value can be mapped into the range of -0.5pi .. 0.5pi by atan</p>
  44 <p class="p6"><br></p>
  45 <p class="p6"><br></p>
  46 <p class="p3"><span class="s2"><a href="../Collections/SequenceableCollection.html">SequenceableCollection</a></span></p>
  47 <p class="p6"><br></p>
  48 <p class="p5">(-100..100).atan.plot;</p>
  49 <p class="p7">// atan is the reverse of tan:</p>
  50 <p class="p5">atan(tan([-1, -0.5, 0, 0.5, 1]));</p>
  51 <p class="p6"><br></p>
  52 <p class="p3"><span class="s2"><a href="../Core/Symbol.html">Symbol</a></span></p>
  53 <p class="p6"><br></p>
  54 <p class="p8"><span class="s5">\foo</span><span class="s4">.atan; </span>// returns itself. this is used in Envelopes see <a href="../Control/Env.html"><span class="s6">Env</span></a>.</p>
  55 <p class="p6"><br></p>
  56 <p class="p4"><br></p>
  57 <p class="p3"><span class="s2"><a href="../Core/Kernel/Function.html">Function</a></span></p>
  58 <p class="p4"><br></p>
  59 <p class="p5">f = atan({<span class="s7">|x|</span> sin(x) });</p>
  60 <p class="p5">f.value((0..1000).normalize(1, 8)).plot;</p>
  61 <p class="p6"><br></p>
  62 <p class="p3"><span class="s2"><a href="../UGens/UGen.html">UGen</a></span></p>
  63 <p class="p6"><br></p>
  64 <p class="p6"><br></p>
  65 <p class="p5">(</p>
  66 <p class="p5">{</p>
  67 <p class="p5"><span class="Apple-tab-span">     </span><span class="s8">var</span> a;</p>
  68 <p class="p5"><span class="Apple-tab-span">     </span>a = <span class="s8">Line</span>.ar(0, 100, 0.01);</p>
  69 <p class="p5"><span class="Apple-tab-span">     </span>(a.atan / 0.25pi) - 1</p>
  70 <p class="p5">}.plot</p>
  71 <p class="p5">)</p>
  72 <p class="p6"><br></p>
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