gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> ~~~o~~o~~casnet~~o~~o~~~</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># 'multi' fractal</span></span></span>
<span class="r-in"><span><span class="va">N</span> <span class="op">&lt;-</span> <span class="fl">2048</span></span></span>
<span class="r-in"><span><span class="va">y</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/pkg/Matrix/man/colSums-methods.html" c