中文说明：在matlab里，对数据进行拟合，在双对数坐标下，看数据是否符合幂律分布，求出幂指数，并绘出图形。
English Description：
In MATLAB, the data is fitted, in the double logarithmic coordinates, whether the data conforms to the power-law distribution, the power exponent is calculated, and the graph is drawn.