*Vertices 4
1 "中草药" 0.0 0.0 0.0 x_fact 19.433517 y_fact 45.003934
2 "药学学报" 0.0 0.0 0.0 x_fact 2.989772 y_fact 12.745869
3 "中国中药杂志" 0.0 0.0 0.0 x_fact 17.151849 y_fact 29.110936
4 "天然产物研究与开发" 0.0 0.0 0.0 x_fact 10.228167 y_fact 13.139260
*Matrix 
0.000000 0.444942 0.900151 0.908899 
0.444942 0.000000 0.474025 0.418716 
0.900151 0.474025 0.000000 0.920036 
0.908899 0.418716 0.920036 0.000000