*Vertices 15
1 "西北植物学报" 0.0 0.0 0.0 x_fact 1.877708 y_fact 4.597978
2 "动物学杂志" 0.0 0.0 0.0 x_fact 0.349061 y_fact 1.636976
3 "北京林业大学学报" 0.0 0.0 0.0 x_fact 3.430429 y_fact 4.525758
4 "南京林业大学学报" 0.0 0.0 0.0 x_fact 1.552720 y_fact 2.383245
5 "福建林学院学报" 0.0 0.0 0.0 x_fact 1.167549 y_fact 2.190660
6 "中南林学院学报" 0.0 0.0 0.0 x_fact 0.517573 y_fact 3.671160
7 "水土保持研究" 0.0 0.0 0.0 x_fact 1.384208 y_fact 2.335099
8 "西北林学院学报" 0.0 0.0 0.0 x_fact 1.251805 y_fact 2.130477
9 "东北林业大学学报" 0.0 0.0 0.0 x_fact 2.046221 y_fact 3.045258
10 "林业科学" 0.0 0.0 0.0 x_fact 4.790563 y_fact 6.439576
11 "林业科学研究" 0.0 0.0 0.0 x_fact 3.033221 y_fact 4.610014
12 "水土保持学报" 0.0 0.0 0.0 x_fact 2.852672 y_fact 9.015407
13 "生态学报" 0.0 0.0 0.0 x_fact 11.976408 y_fact 18.331728
14 "应用生态学报" 0.0 0.0 0.0 x_fact 9.087626 y_fact 29.694271
15 "生态学杂志" 0.0 0.0 0.0 x_fact 3.189697 y_fact 5.392393
*Matrix 
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