*Vertices 4
1 "应用气象学报" 0.0 0.0 0.0 x_fact 0.285714 y_fact 18.714286
2 "作物学报" 0.0 0.0 0.0 x_fact 2.428571 y_fact 42.857143
3 "干旱地区农业研究" 0.0 0.0 0.0 x_fact 9.000000 y_fact 28.714286
4 "中国农业气象" 0.0 0.0 0.0 x_fact 3.571429 y_fact 9.714286
*Matrix 
0.000000 0.000000 0.000000 0.234873 
0.000000 0.000000 0.306021 0.202806 
0.000000 0.306021 0.000000 0.301155 
0.234873 0.202806 0.301155 0.000000