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<b class="current">Complex Numbers</b>
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<div><h1 id="a0000000240">B.2 Complex Numbers</h1>
<p>The syntax used for representing complex numbers in PyXPlot differs from that used in Gnuplot. Whereas Gnuplot expects the real and imaginary components of complex numbers to be represented <tt class="tt">{a,b}</tt>, PyXPlot uses the syntax <tt class="tt">a+b*i</tt>, assuming that the variable <tt class="tt">i</tt> has been defined to equal <tt class="tt">sqrt(-1)</tt>. In addition, in PyXPlot complex arithmetic must first be enabled using the <tt class="tt">set numerics complex</tt> command before complex numbers may be entered. This is illustrated by the following example: </p><p> <tt class="tt">gnuplot> <b class="bf">print {1,2} + {3,4}</b></tt><br /><tt class="tt">{4.0, 6.0}</tt> <br /><tt class="tt">pyxplot> <b class="bf">set numerics complex</b></tt><br /><tt class="tt">pyxplot> <b class="bf">print (1+2*i) + (3+4*i)</b></tt><br /><tt class="tt">(4+6i)</tt> </p></div>
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