<span class="pre">scale</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">(1.0,</span> <span class="pre">1.0,</span> <span class="pre">1.0)</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">vrange</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">srange</span></span><span class="o"><span 