用Matlab实现模拟长江水质变化情况，数据源来自国家水利部 -changjiang water quality simulation

来自长江水质评价与预测全国得奖论文的源代码，仅供大家参考学习-From the Yangtze River water quality assessment and prediction of the award-winning paper source code, for your reference learning

带有级比调整的灰色预测代码 在灰色预测之前做级比检验，降低相对误差-GREY MODEL