https://wenku.baidu.com/view/ea612a7c31b765ce05081473.html?qq-pf-to=pcqq.group
# -*- coding: utf-8 -*-
# <nbformat>2</nbformat>
# <codecell>
#A1 温度上升 #A2 耕地面积减少 #A3 自然灾害
#A1 0.471
#A2 0.088
#A3 0.439
A = np.array([[1,6,0.5],
[0.166,1,0.25],
[2,4,1]])
# <codecell>
SUMR = []
for i in range(0,3):
tempsum=0
for j in range(0,3):
tempsum+=A[j][i]
SUMR.append(tempsum)
# <codecell>
A=np.row_stack((A,SUMR))
# <codecell>
A
# <codecell>
SUMC = []
for i in range(0,4):
tempsum=0
for j in range(0,3):
tempsum+=A[i][j]
SUMC.append(tempsum)
# <codecell>
A=np.column_stack((A,SUMC))
# <codecell>
A
# <codecell>
W=[]
total=0
for i in range(0,3):
total+=A[i][3]
for i in range(0,3):
W.append(A[i][3]/total)
# <codecell>
W.append(1)
# <codecell>
A1=np.column_stack((A1,W))
# <codecell>
A1
# <codecell>
# <codecell>
```![)2]@Z(6W_JK4ZHADTSANA_L.png](http://upload-images.jianshu.io/upload_images/6927087-39711a0a4cbfb662.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
