*Vertices 4
1 "果树学报" 0.0 0.0 0.0 x_fact 7.722309 y_fact 15.912637
2 "园艺学报" 0.0 0.0 0.0 x_fact 1.326053 y_fact 14.586583
3 "中南林学院学报" 0.0 0.0 0.0 x_fact 7.020281 y_fact 27.457098
4 "经济林研究" 0.0 0.0 0.0 x_fact 4.134165 y_fact 42.043682
*Matrix 
0.000000 0.737305 0.000000 0.000000 
0.737305 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.326662 
0.000000 0.000000 0.326662 0.000000