*Vertices 4
1 "作物学报" 0.0 0.0 0.0 x_fact 0.948992 y_fact 27.520759
2 "福建林学院学报" 0.0 0.0 0.0 x_fact 4.863582 y_fact 24.080664
3 "林业科学" 0.0 0.0 0.0 x_fact 3.914591 y_fact 24.555160
4 "江西农业大学学报" 0.0 0.0 0.0 x_fact 9.845789 y_fact 23.843416
*Matrix 
0.000000 0.000000 0.000000 0.221251 
0.000000 0.000000 0.369934 0.293385 
0.000000 0.369934 0.000000 0.283997 
0.221251 0.293385 0.283997 0.000000