="op">&lt;-</span> <span class="fu">grDevices</span><span class="fu">::</span><span class="fu"><a href="https://rdrr.io/r/grDevices/palettes.html" class="external-link">heat.colors</a></span><span class="op">(</span><span class="fl">100</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/graphics/image.html" class="external-link">image</a></span><span class="op">(</span><span class="va">mat</span>,axe <span class="op">=</span> <span class="cn">F