*Vertices 4
1 "干旱地区农业研究" 0.0 0.0 0.0 x_fact 4.158004 y_fact 23.700624
2 "中国农业气象" 0.0 0.0 0.0 x_fact 3.326403 y_fact 7.276507
3 "杂交水稻" 0.0 0.0 0.0 x_fact 0.207900 y_fact 44.906445
4 "自然资源学报" 0.0 0.0 0.0 x_fact 1.663202 y_fact 24.116424
*Matrix 
0.000000 0.346274 0.000000 0.000000 
0.346274 0.000000 0.287967 0.278154 
0.000000 0.287967 0.000000 0.000000 
0.000000 0.278154 0.000000 0.000000