<div align="justify"> <p>This example renders a classical well known <a href="http://en.wikipedia.org/wiki/Mandelbrot_set">Mandelbrot</a>'s fractal. That can't be written as a simple expression and shows the possibilities of this little application.</p> <h4>Command:</h4> <pre>image 400 400 ' x0 = (x/w) / 3000 - 1.2499 y0 = (y/h) / 3000 - 0.07 a = 0 b = 0 iteration = 0 max_iteration = 1024 while ( (a^2 + b^2) <= 4 && iteration < max_iteration ) { atemp = a*a - b*b + x0 b = 2*a*b + y0 a = atemp iteration += 1 } if ( iteration == max_iteration ) color = 0 else { color = mod( iteration, 256 ) / 255 } color' f0f,00f,0ff,ff0,f00 > mandelbrot.xpm</pre> <p>If you want to see the full Mandelbrot picture, set:</p> <ul> <li><code>x0 = x*3.5/w - 2.5</code></li> <li><code>y0 = y*2/h - 1</code></li> </ul> </div>