*Vertices 4
1 "植物生理学通讯" 0.0 0.0 0.0 x_fact 2.898551 y_fact 10.144928
2 "中国农业科学" 0.0 0.0 0.0 x_fact 14.407502 y_fact 33.674339
3 "作物学报" 0.0 0.0 0.0 x_fact 16.027280 y_fact 35.123615
4 "中国农学通报" 0.0 0.0 0.0 x_fact 16.965047 y_fact 21.057118
*Matrix 
0.000000 0.340705 0.493124 0.662107 
0.340705 0.000000 0.843629 0.825235 
0.493124 0.843629 0.000000 0.866909 
0.662107 0.825235 0.866909 0.000000