*Vertices 4
1 "扬州大学学报农业与生命科学版" 0.0 0.0 0.0 x_fact 2.990798 y_fact 7.745399
2 "中国水稻科学" 0.0 0.0 0.0 x_fact 8.205521 y_fact 17.944785
3 "中国农业科学" 0.0 0.0 0.0 x_fact 16.180982 y_fact 35.429448
4 "作物学报" 0.0 0.0 0.0 x_fact 17.177914 y_fact 38.880368
*Matrix 
0.000000 0.344214 0.330783 0.400356 
0.344214 0.000000 0.598989 0.665738 
0.330783 0.598989 0.000000 0.820871 
0.400356 0.665738 0.820871 0.000000