Abstract: The theoretical formula method is an important and effective method in intensity parameter research. The JRC-JCS method of Barton is one of the most frequently used method. However,the results of the Barton method vary with each individual since it is influenced by the roughness coefficient JRC and it is difficult in quantization. Through the quantitative analysis of JRC,a large number of structure undulating curve and tandard curve that Barton recommends is analyzed with the vector,and the conc...