*Vertices 7
1 "植物学报" 0.0 0.0 0.0 x_fact 1.445783 y_fact 13.855422
2 "中国农业科学" 0.0 0.0 0.0 x_fact 40.361446 y_fact 46.385542
3 "作物学报" 0.0 0.0 0.0 x_fact 8.674699 y_fact 18.614458
4 "作物杂志" 0.0 0.0 0.0 x_fact 3.795181 y_fact 4.277108
5 "土壤肥料" 0.0 0.0 0.0 x_fact 0.481928 y_fact 2.469880
6 "玉米科学" 0.0 0.0 0.0 x_fact 3.674699 y_fact 10.783133
7 "中国粮油学报" 0.0 0.0 0.0 x_fact 0.301205 y_fact 3.614458
*Matrix 
0.000000 0.000000 0.293753 0.428858 0.000000 0.000000 0.000000 
0.000000 0.000000 0.938280 0.804540 0.000000 0.221503 0.000000 
0.293753 0.938280 0.000000 0.865370 0.000000 0.262466 0.000000 
0.428858 0.804540 0.865370 0.000000 0.332267 0.414129 0.343160 
0.000000 0.000000 0.000000 0.332267 0.000000 0.000000 0.000000 
0.000000 0.221503 0.262466 0.414129 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.343160 0.000000 0.000000 0.000000