使用一篇论文提供的方程组和参数——分形仿射变换方法转换过来的MATLAB程序，画一片蕨叶。输入是起始坐标x0,y0和迭代次数——一般在几万次，十万次比较清晰。-Plotting the leaf with equations and parameters given by an essay. This method is fractal theory. The input is the location of starting points x0,y0 and the iteration ti