p>
<p>This program is time consuming because it must make a lot of operations; 
the computing time is also related with the number of grid points.
</p>
<p>Example:
</p>
<pre class="example">(%i1) load(fractals)$
(%i2) plot3d (julia_set, [x, -2, 1], [y, -1.5, 1.5],
                [gnuplot_preamble, &quot;set view map&quot;],
                [gnuplot_pm3d, true],
                [grid, 150, 150])$
</pre>
<p>See also <code>julia_parameter</code>.
</p></dd></dl>

<dl>
<dt><u>Option variable:</u> <b>julia_param