泥沙粒度参数计算程序,应用作图法来计算粒度参数，计算公式为国家海洋调查规范所用的公式，一共输出五个参数，平均粒径，中值粒径，分选系数，偏态系数，峰态系数。-Sediment grain size calculation procedures, the application of mapping method to calculate the size parameters, calculated as the National Marine survey specifications used